-
question_answer1)
Digestion is defined as conversion of:
A)
nondiffusible food elements into diffusible constituents done
clear
B)
large food particles into smaller ones done
clear
C)
soluble food into protoplasm done
clear
D)
starch into glycogen done
clear
View Solution play_arrow
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question_answer2)
Essentially the word 'digestion' means: (CPMT 2005; JIPMER 2006)
A)
burning of food done
clear
B)
oxidation of food done
clear
C)
hydrolysis of food done
clear
D)
breakdown of food done
clear
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question_answer3)
All digestive enzymes are:
A)
ligases done
clear
B)
oxidases done
clear
C)
hydrolases done
clear
D)
transferases done
clear
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question_answer4)
In hydrolysis, a small amount of energy is released as:
A)
heat done
clear
B)
light done
clear
C)
kinetic energy done
clear
D)
potential energy done
clear
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question_answer5)
Digestive process in human being is: (BHU 2002)
A)
intracellular done
clear
B)
extracellular done
clear
C)
both of these done
clear
D)
none of these done
clear
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question_answer6)
Largest variety of digestive enzymes is found in: (BV Pune 2004)
A)
parasites done
clear
B)
omnivores done
clear
C)
herbivores done
clear
D)
carnivores done
clear
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question_answer7)
Consider the following statements: |
Assertion [A]: Polypeptidase acts on the peptide linkages of proteins and breaks them into smaller molecules. Water molecules are necessary for this reaction. |
Reason [R]: All digestive enzymes belong to hydrolase class. Now select your answer from the answer code given below: |
A)
Both [A] and [R] are true and [R] is the correct explanation of [A] done
clear
B)
Both [A] and [R] are true but [R] is not the correct explanation of [A] done
clear
C)
[A] is true but [R] is false done
clear
D)
[R] is true but [A] is false done
clear
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question_answer8)
In mammals, the digestion of starch starts from: (BHU 2001; Pb. PMT 2003; Orissa JEE 2007)
A)
mouth done
clear
B)
stomach done
clear
C)
duodenum done
clear
D)
oesophagus done
clear
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question_answer9)
The delicious food generally makes mouth watery. This is due to: (JKCMEE 2002)
A)
neural response done
clear
B)
optic response done
clear
C)
hormonal response done
clear
D)
olfactory response done
clear
View Solution play_arrow
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question_answer10)
Digestion of carbohydrates is affected by:
A)
pepsin done
clear
B)
erepsin done
clear
C)
steapsin done
clear
D)
amylopsin done
clear
View Solution play_arrow
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question_answer11)
Daily secretion of saliva in man is about: (Orissa JEE 2004)
A)
100 mL done
clear
B)
250 mL done
clear
C)
500mL done
clear
D)
1000 mL done
clear
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question_answer12)
A lubricant, mucin in saliva is made up of: (Pb. PMT 2004)
A)
myosin done
clear
B)
glycoprotein done
clear
C)
phospholipids done
clear
D)
polysaccharides done
clear
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question_answer13)
Ptyalin is secreted by:
A)
Gastric gland done
clear
B)
Salivary gland done
clear
C)
Digestive gland done
clear
D)
Brunner's gland done
clear
View Solution play_arrow
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question_answer14)
Saliva contains: (Manipal 2004)
A)
ptyalin done
clear
B)
lipase done
clear
C)
trypsin done
clear
D)
rennin done
clear
View Solution play_arrow
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question_answer15)
Saliva contains the enzyme: (CPMT 2003)
A)
amylase done
clear
B)
maltase done
clear
C)
invertase done
clear
D)
sucrose done
clear
View Solution play_arrow
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question_answer16)
Match the pair:
A)
B)
C)
D)
View Solution play_arrow
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question_answer17)
Salivary amylase is also known as: Manipal 2005)
A)
ptyalin done
clear
B)
gastrin done
clear
C)
glyoxylase done
clear
D)
pepsin done
clear
View Solution play_arrow
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question_answer18)
pH of saliva is: (Orissa JEE 2006)
A)
7 done
clear
B)
8 done
clear
C)
6.8 done
clear
D)
9.5 done
clear
View Solution play_arrow
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question_answer19)
Ptyalin acts upon:
A)
fat done
clear
B)
lipid done
clear
C)
starch done
clear
D)
protein done
clear
View Solution play_arrow
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question_answer20)
Ptyalin of saliva acts in:
A)
slightly acidic medium done
clear
B)
slightly alkaline medium done
clear
C)
neutral medium done
clear
D)
all types of media done
clear
View Solution play_arrow
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question_answer21)
Ptyalin cannot work in stomach because it is:
A)
inactivated by HCl done
clear
B)
inactivated by rennin done
clear
C)
inactivated by pepsin done
clear
D)
carbohydrate digesting done
clear
View Solution play_arrow
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question_answer22)
Substrate of enzyme amylase is:
A)
fat done
clear
B)
starch done
clear
C)
protein done
clear
D)
sugarcane done
clear
View Solution play_arrow
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question_answer23)
Which one is different from the category of other three?
A)
Ptyalin done
clear
B)
Secretin done
clear
C)
Gastrin done
clear
D)
Glucagon done
clear
View Solution play_arrow
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question_answer24)
Carbohydrates ingested in the diet are hydrolysed by the enzyme: (WB-JEE 2006)
A)
pepsin done
clear
B)
cellulase done
clear
C)
a-amylase done
clear
D)
glycosidase done
clear
View Solution play_arrow
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question_answer25)
Starch is converted to maltose by the action of: (MH-CET2006)
A)
sucrase done
clear
B)
maltase done
clear
C)
invertase done
clear
D)
amylase done
clear
View Solution play_arrow
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question_answer26)
An enzyme which brings about conversion of starch into maltose is: (PCS 2002)
A)
invertase done
clear
B)
diastase done
clear
C)
catalase done
clear
D)
maltase done
clear
View Solution play_arrow
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question_answer27)
Which of these statements about starch digestion is false?
A)
It begins in the mouth done
clear
B)
It occurs in the stomach done
clear
C)
It requires the action of pancreatic amylase done
clear
D)
Its digestion is completed in the small intestine done
clear
View Solution play_arrow
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question_answer28)
1-4 glycosidic bonds are broken when:
A)
Lipid is digested by lipase done
clear
B)
DNA is digested by nucleas done
clear
C)
Protein is digested by pepsin done
clear
D)
Starch is digested by amylase done
clear
View Solution play_arrow
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question_answer29)
Protein digestion is carried out by:
A)
proteolytic enzymes done
clear
B)
proteoses done
clear
C)
peptides done
clear
D)
all of these done
clear
View Solution play_arrow
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question_answer30)
Protein digestion is necessary because proteins:
A)
are large molecules done
clear
B)
are complex molecules done
clear
C)
cannot be absorbed as such done
clear
D)
have a number of amino acids done
clear
View Solution play_arrow
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question_answer31)
Digestion of protein takes place in:
A)
intestine and rectum done
clear
B)
stomach and duodenum done
clear
C)
small and large intestine done
clear
D)
stomach and oesophagus done
clear
View Solution play_arrow
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question_answer32)
Stomach is the site of digestion mainly of: (WB-JEE 2006)
A)
fats done
clear
B)
proteins done
clear
C)
minerals done
clear
D)
carbohydrates done
clear
View Solution play_arrow
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question_answer33)
A rabbit eats a lot of gram. Then its digestion starts in: (RPMT 2001)
A)
ileum done
clear
B)
stomach done
clear
C)
mouth done
clear
D)
duodenum done
clear
View Solution play_arrow
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question_answer34)
Digestion of protein in starts from:
A)
mouth done
clear
B)
stomach done
clear
C)
duodenum done
clear
D)
oesophagus done
clear
View Solution play_arrow
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question_answer35)
Stomach is the site of digestion of mainly:
A)
fats done
clear
B)
proteins done
clear
C)
carbohydrate done
clear
D)
all of these done
clear
View Solution play_arrow
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question_answer36)
The pH of stomach ranges between: (Karnataka CET 2001; Uttarakhand PMT 2007; BV Pune 2008)
A)
1.5 to 2.0 done
clear
B)
6.8 to 7.2 done
clear
C)
7.1 to 8.2 done
clear
D)
7.6 to 8.6 done
clear
View Solution play_arrow
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question_answer37)
Gastric juice has a pH of about: (Orissa JEE 2003, 08; MPPMT 2010)
A)
1 done
clear
B)
2 done
clear
C)
5 done
clear
D)
6 done
clear
View Solution play_arrow
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question_answer38)
If pH of stomach is made 7, which component of food would be affected?
A)
Fat done
clear
B)
Starch done
clear
C)
Protein done
clear
D)
Sucrose done
clear
View Solution play_arrow
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question_answer39)
Which of the following digestive juices have the minimum pH? (AIIMS 2002)
A)
Bile done
clear
B)
Saliva done
clear
C)
Gastric juice done
clear
D)
Pancreatic juice done
clear
View Solution play_arrow
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question_answer40)
Which two enzymes are present in human gastric juice?
A)
HCl and pepsin done
clear
B)
Pepsin and rennin done
clear
C)
Trypsin and erepsin done
clear
D)
Trypsin and rennin done
clear
View Solution play_arrow
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question_answer41)
Which cells of gastric mucosa secrete pepsinogen? (DPMT 2007)
A)
Goblet done
clear
B)
Parietal done
clear
C)
Oxyntic done
clear
D)
Chief cells done
clear
View Solution play_arrow
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question_answer42)
Zymogen cells of gastric glands secrete:
A)
pepsin done
clear
B)
trypsin done
clear
C)
pepsinogen done
clear
D)
chymotrypsin done
clear
View Solution play_arrow
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question_answer43)
Find out the correctly matched pair: (Kerala PMT 2007)
A)
B)
C)
D)
E)
View Solution play_arrow
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question_answer44)
Pepsinogen is activated by:
A)
pepsin done
clear
B)
trypsin done
clear
C)
chymotrypsin done
clear
D)
hydrochloric acid done
clear
View Solution play_arrow
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question_answer45)
Which of the following enzyme digest protein in stomach? (Wardha 2006; MPPMT 2006; BV Pune 2007; Manipal 2008; BHU 2008; DPMT 2008)
A)
Pepsin done
clear
B)
Trypsin done
clear
C)
Erepsin done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer46)
Main enzyme present in gastric juice is:
A)
lipase done
clear
B)
pepsin done
clear
C)
amylase done
clear
D)
trypsin done
clear
View Solution play_arrow
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question_answer47)
Pepsin is secreted by:
A)
liver done
clear
B)
gonads done
clear
C)
stomach done
clear
D)
intestine done
clear
View Solution play_arrow
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question_answer48)
Pepsin is secreted by:
A)
liver done
clear
B)
pancreas done
clear
C)
zymogen cells done
clear
D)
epithelial cells done
clear
View Solution play_arrow
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question_answer49)
Peptic cells secrete: (DPMT 2005)
A)
HCl done
clear
B)
Pepsin done
clear
C)
Gastrin done
clear
D)
Cholecystokinin done
clear
View Solution play_arrow
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question_answer50)
Pepsin digests:
A)
fat done
clear
B)
cellulose done
clear
C)
protein done
clear
D)
carbohydrate done
clear
View Solution play_arrow
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question_answer51)
Which enzyme will digest protein if pH is 1.6?
A)
Pepsin done
clear
B)
Trypsin done
clear
C)
Peptidase done
clear
D)
Propepsin done
clear
View Solution play_arrow
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question_answer52)
Enzyme pepsin acts in: (Orissa JEE 2007)
A)
mouth done
clear
B)
intestine done
clear
C)
acidic medium in the pancreas done
clear
D)
acidic medium in the stomach done
clear
View Solution play_arrow
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question_answer53)
The enzyme used to convert proteins into proteoses and peptones is:
A)
erepsin done
clear
B)
trypsin done
clear
C)
pepsin done
clear
D)
peptidase done
clear
View Solution play_arrow
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question_answer54)
pH at which pepsin acts is: (JCECE 2003)
A)
5.8 done
clear
B)
6.8 done
clear
C)
7.0 done
clear
D)
2.0 done
clear
View Solution play_arrow
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question_answer55)
Pepsin converts: (BHU 2004)
A)
fats into fatty acids done
clear
B)
glycogen to maltose done
clear
C)
sucrose to glucose done
clear
D)
proteins to peptones done
clear
View Solution play_arrow
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question_answer56)
Medium in which pepsin active is: (Har. PMT2007)
A)
acidic done
clear
B)
neutral done
clear
C)
isotonic done
clear
D)
alkaline done
clear
View Solution play_arrow
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question_answer57)
Enzyme pepsin acts upon food at a pH of about:
A)
three to split proteins done
clear
B)
two to split carbohydrates done
clear
C)
seven to change proteins to peptones done
clear
D)
two to change proteins into amino acids done
clear
View Solution play_arrow
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question_answer58)
Identify the correct set which shows the name of the enzymes from where it is secreted and substrate upon which it acts: (Orissa JEE 2002)
A)
B)
C)
D)
View Solution play_arrow
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question_answer59)
Enzyme rennin used in digestion is secreted from: (BCECE 2005)
A)
liver done
clear
B)
pancreas done
clear
C)
intestine done
clear
D)
stomach done
clear
View Solution play_arrow
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question_answer60)
Which of the following is true about pepsin?
A)
Most pepsin is released directly from chief cells done
clear
B)
Pepsin is essential for protein digestion done
clear
C)
Pepsin accelerates protein digestion done
clear
D)
Pepsin is most active at high pH done
clear
View Solution play_arrow
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question_answer61)
Prorennin is secreted by: (DPMT 2007)
A)
Sertoli cells done
clear
B)
Hepatocytes done
clear
C)
Zymogen cells done
clear
D)
Islet of Langerhans done
clear
View Solution play_arrow
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question_answer62)
In mammals, a significant role in the digestion of milk is played by: (CBSE 2000; AFMC 2007)
A)
rennin done
clear
B)
invertase done
clear
C)
intestinal bacteria done
clear
D)
pancreatic amylase done
clear
View Solution play_arrow
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question_answer63)
Rennin is found in:
A)
bile done
clear
B)
saliva done
clear
C)
gastric juice done
clear
D)
pancreatic juice done
clear
View Solution play_arrow
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question_answer64)
Curdling of milk in stomach occurs by the action of: (AIIMS 2002)
A)
rennin done
clear
B)
trypsin done
clear
C)
erepsin done
clear
D)
chymotrypsin done
clear
View Solution play_arrow
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question_answer65)
Milk protein is acted upon by a gastric enzyme:
A)
casein done
clear
B)
pepsin done
clear
C)
rennin done
clear
D)
caseinogen done
clear
View Solution play_arrow
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question_answer66)
Renin acts on milk proteins and converts: (JIPMER 2002)
A)
caseinogen to casein done
clear
B)
casein into paracasein done
clear
C)
caseinogen to paracasein done
clear
D)
paracasein into caseinogen done
clear
View Solution play_arrow
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question_answer67)
Which is correct pairing of site of action and substrate of rennin?
A)
B)
C)
D)
View Solution play_arrow
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question_answer68)
Choose the correct enzyme-substrate pair:
A)
B)
C)
D)
View Solution play_arrow
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question_answer69)
Which one of the following pairs of the kind of cells and their secretion is correctly matched? (AIIMS 2006)
A)
Oxyntic cells\[-\]a secretion with pH between 2.0 and 3.0 done
clear
B)
Kupffer cells\[-\]a digestive enzyme that hydrolyses nucleic acids done
clear
C)
Sebaceous glands\[-\]a secretion that evaporates for cooling done
clear
D)
Alpha cells of Islets of Langerhans\[-\]secretion that decreases blood sugar level done
clear
View Solution play_arrow
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question_answer70)
Function of HCl in stomach is to:
A)
facilitate absorption of food done
clear
B)
kill microorganisms of food done
clear
C)
activate trypsinogen to trypsin done
clear
D)
dissolve enzymes secreted by gastric glands done
clear
View Solution play_arrow
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question_answer71)
Which is not the function of HCl in stomach?
A)
killing the bacteria ingested with food and drinks done
clear
B)
breaking down proteins into peptones done
clear
C)
promoting the formation of pepsin done
clear
D)
softening fibrous food elements done
clear
View Solution play_arrow
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question_answer72)
Which of these statements about gastric secretion of HCl is false?
A)
HCl hydrolyses peptide bonds done
clear
B)
HCl is secreted by parietal cells done
clear
C)
HCl is needed for maximum activity of pepsin done
clear
D)
HCl is needed for the conversion of pepsinogen to pepsin done
clear
View Solution play_arrow
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question_answer73)
What will happen if the secretion of parietal cells of the gastric glands is blocked with an inhibitor? (CBSE 2008)
A)
Gastric Juice will be deficient in chymosin done
clear
B)
Gastric juice will be deficient in pepsinogen done
clear
C)
In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin done
clear
D)
Enterokinase will not be released from the duodenal mucosa and so trypsinogen is not converted to trypsin done
clear
View Solution play_arrow
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question_answer74)
Which of the following inhibits gastric HCl secretion during a meal?
A)
Distension of the stomach done
clear
B)
Distension of the duodenum done
clear
C)
The sight and smell of the food done
clear
D)
Presence of peptides in the stomach done
clear
View Solution play_arrow
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question_answer75)
The food that enters intestine from stomach is called: (AFMC 2009)
A)
chyle done
clear
B)
chyme done
clear
C)
fundus done
clear
D)
none of these done
clear
View Solution play_arrow
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question_answer76)
The food having fully undergone mechanical and chemical digestion inside the stomach is called:
A)
chyle done
clear
B)
bolus done
clear
C)
chyme done
clear
D)
amino acid done
clear
View Solution play_arrow
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question_answer77)
If the chyme of a person who had orally consumed only starch as food is analysed before it enters the duodenum, it will show-the presence of: (Karnataka CET 2002)
A)
maltose and glucose done
clear
B)
dextrin -and maltose done
clear
C)
starch, dextrin and maltose done
clear
D)
starch, dextrin and glucose done
clear
View Solution play_arrow
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question_answer78)
Excessive stimulation of vagus nerve in humans may lead to: (AIIMS 2003)
A)
hoarse voice done
clear
B)
peptic ulcers done
clear
C)
efficient digestion of proteins done
clear
D)
irregular contractions of diaphragm done
clear
View Solution play_arrow
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question_answer79)
Digestive juice lacking enzyme but adding to digestion is:
A)
bile done
clear
B)
chyle done
clear
C)
chyme done
clear
D)
succus entericus done
clear
View Solution play_arrow
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question_answer80)
Which of the following has the highest pH? (AMU 2007)
A)
Bile done
clear
B)
Gastric juice done
clear
C)
Pancreatic juice done
clear
D)
Secretions of the intestinal glands done
clear
View Solution play_arrow
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question_answer81)
Action of bile on fat is:
A)
acidic done
clear
B)
hormonal done
clear
C)
enzymatic done
clear
D)
nonenzymatic done
clear
View Solution play_arrow
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question_answer82)
Fat digestion is facilitated by:
A)
gastric juice done
clear
B)
bile juice done
clear
C)
pancreatic juice done
clear
D)
none of these done
clear
View Solution play_arrow
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question_answer83)
The amount of bile released is in proportion to the amount of: (CPMT 2004; MPPMT 2005)
A)
fat in meal done
clear
B)
protein in meal done
clear
C)
carbohydrate in meal done
clear
D)
all of these done
clear
View Solution play_arrow
-
question_answer84)
Which term is used for action of bile salts on fat?
A)
Hydrolysis done
clear
B)
Putrefaction done
clear
C)
Oxidation done
clear
D)
Emulsification done
clear
View Solution play_arrow
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question_answer85)
Part of bile juice useful in digestion is: (CPMT 2007)
A)
bile salt done
clear
B)
bile pigment done
clear
C)
bile matrix done
clear
D)
all of these done
clear
View Solution play_arrow
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question_answer86)
The first process in the digestion and assimilation of fats is: (BHU 2003)
A)
emulsification done
clear
B)
enzymatic action done
clear
C)
absorption by lacteals done
clear
D)
storage in adipose tissue done
clear
View Solution play_arrow
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question_answer87)
Bile helps in the digestion of fats because: (PCS 2004)
A)
it emulsifies fats done
clear
B)
it makes the medium alkaline done
clear
C)
it activates fat digestion enzymes done
clear
D)
it degrades fats into fatty acids and glycerol done
clear
View Solution play_arrow
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question_answer88)
Emulsification of fat by bile occurs in:
A)
liver done
clear
B)
pancreas done
clear
C)
stomach done
clear
D)
duodenum done
clear
View Solution play_arrow
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question_answer89)
Emulsification of fats is brought about by: (CBSE 2001; Manipal 2005; Orissa JEE 2010)
A)
HCl done
clear
B)
bile salts done
clear
C)
bile pigments done
clear
D)
pancreatic juice done
clear
View Solution play_arrow
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question_answer90)
Sodium taurocholate aids in: (EAMCET 2000)
A)
defecation done
clear
B)
absorption done
clear
C)
assimilation done
clear
D)
emulsification done
clear
View Solution play_arrow
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question_answer91)
Bile salts help in: (CPMT 2006)
A)
digestion of fats done
clear
B)
excretion of fats done
clear
C)
absorption of fats done
clear
D)
both absorption and digestion of fats done
clear
View Solution play_arrow
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question_answer92)
Secretion of the bile is proportional to the concentration of: (MPPMT 2007; Har. PMT 2008)
A)
fat done
clear
B)
protein done
clear
C)
carbohydrate done
clear
D)
none of these done
clear
View Solution play_arrow
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question_answer93)
Absence of which of these in bile will make fat digestion difficult?
A)
Salts done
clear
B)
Acids done
clear
C)
Pigments done
clear
D)
Cholesterol done
clear
View Solution play_arrow
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question_answer94)
Pancreatic juice is released into:
A)
ileum done
clear
B)
jejunum done
clear
C)
stomach done
clear
D)
duodenum done
clear
View Solution play_arrow
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question_answer95)
Medium of pancreatic juice remains:
A)
neutral done
clear
B)
alkaline done
clear
C)
highly acidic done
clear
D)
slightly acidic done
clear
View Solution play_arrow
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question_answer96)
Pancreatic juice takes part in digestion of:
A)
proteins, fats and carbohydrates done
clear
B)
proteins and carbohydrates done
clear
C)
proteins and fats done
clear
D)
proteins only done
clear
View Solution play_arrow
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question_answer97)
Proteolytic enzymes present in the pancreatic juice are: | (BHU2007) |
1. pepsin | |
2. elastase | |
3. salivary amylase | |
4. chymotrypsin | |
Answer codes:
A)
1 and 2 are correct done
clear
B)
1 and 3 are correct done
clear
C)
2 and 4 are correct done
clear
D)
1, 2 and 3 are correct done
clear
View Solution play_arrow
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question_answer98)
Which of the following remain undigested if pancreas is removed?
A)
Carbohydrates done
clear
B)
Fats done
clear
C)
Proteins done
clear
D)
All of these done
clear
View Solution play_arrow
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question_answer99)
Pancreatic lipase acts upon:
A)
glycogen done
clear
B)
triglycerides done
clear
C)
polypeptides done
clear
D)
disaccharides done
clear
View Solution play_arrow
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question_answer100)
The enzyme trypsin is found in: (Kerala PMT 2002; St. Johns MC 2002)
A)
mucus done
clear
B)
saliva done
clear
C)
intestinal juice done
clear
D)
pancreatic juice done
clear
View Solution play_arrow
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question_answer101)
Chymotrypsin is secreted by: (Manipal 2004)
A)
mouth done
clear
B)
intestine done
clear
C)
stomach done
clear
D)
pancreas done
clear
View Solution play_arrow
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question_answer102)
Carboxy peptidase is an enzyme secreted by: (Kerala PMT 2004)
A)
stomach done
clear
B)
pancreas done
clear
C)
intestine done
clear
D)
gall bladder done
clear
E)
salivary gland done
clear
View Solution play_arrow
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question_answer103)
DNase and RNase are the enzymes secreted by: (BHU 2003)
A)
pancreas done
clear
B)
stomach done
clear
C)
intestine done
clear
D)
mouth glands done
clear
View Solution play_arrow
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question_answer104)
The digestive enzyme that is not found in human pancreatic juice is: (Kerala PMT 2006)
A)
lipase done
clear
B)
trypsin done
clear
C)
amylase done
clear
D)
nuclease done
clear
E)
nucleotidase done
clear
View Solution play_arrow
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question_answer105)
Food bolus after passing through alkaline medium is: (Orissa JEE 2006)
A)
chyle done
clear
B)
chyme done
clear
C)
fat body done
clear
D)
chylomicron done
clear
View Solution play_arrow
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question_answer106)
Trypsin differs from pepsin in that:
A)
it digests proteins in alkaline medium and not in acidic medium done
clear
B)
it digests proteins in acidic medium and not in alkaline medium done
clear
C)
both [a] and [b] done
clear
D)
none of the above done
clear
View Solution play_arrow
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question_answer107)
Trypsin helps in digestion of proteins in:
A)
stomach in acidic medium done
clear
B)
duodenum in acidic medium done
clear
C)
stomach in alkaline medium done
clear
D)
duodenum in alkaline medium done
clear
View Solution play_arrow
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question_answer108)
Trypsin changes:
A)
fats into fatty acids done
clear
B)
proteins into peptones done
clear
C)
maltose into its components done
clear
D)
starch and glycogen into maltose done
clear
View Solution play_arrow
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question_answer109)
Chymotrypsin acts upon:
A)
starch in duodenum done
clear
B)
proteins in stomach done
clear
C)
proteins in duodenum in acidic medium done
clear
D)
proteins in duodenum in alkaline medium done
clear
View Solution play_arrow
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question_answer110)
In the absence of enterokinase, the digestion of........... would be affected in our intestine. (Karnataka CET 2009)
A)
starch done
clear
B)
albumin done
clear
C)
maltose done
clear
D)
aminoacid done
clear
View Solution play_arrow
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question_answer111)
Trypsinogen is changed to trypsin by: (PCS 2004; Kerala PMT 2008)
A)
gastrin done
clear
B)
enterogastrone done
clear
C)
enterokinase done
clear
D)
secretin done
clear
View Solution play_arrow
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question_answer112)
Enterokinase stimulates: (BCECE 2007; AMU 2007)
A)
pepsin done
clear
B)
trypsin done
clear
C)
pepsinogen done
clear
D)
trypsinogen done
clear
View Solution play_arrow
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question_answer113)
Enterokinase helps in the conversion of:
A)
caseinogen to casein done
clear
B)
pepsinogen to pepsin done
clear
C)
protein to polypeptides done
clear
D)
trypsinogen into trypsin done
clear
View Solution play_arrow
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question_answer114)
Just as hydrochloric acid is for pepsinogen, so is the: (MPPMT 2004)
A)
bile juice for fat done
clear
B)
glucagon for glycogen done
clear
C)
haemoglobin for oxygen done
clear
D)
enterokinase for trypsinogen done
clear
View Solution play_arrow
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question_answer115)
Which of these statements about trypsin is true?
A)
Trypsin is produced by the crypts of Lieberkuhn done
clear
B)
Active trypsin is secreted into the pancreatic acini done
clear
C)
Trypsinogen is converted to trypsin by enterokinase done
clear
D)
Trypsin is derived from trypsinogen by the digestive action of pepsin done
clear
View Solution play_arrow
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question_answer116)
Which of the following processes will be affected by the absence of enterokinase? (Gujarat CET 2007)
A)
Amylose \[\to \] Maltose done
clear
B)
Proteoses \[\to \] Dipeptide done
clear
C)
Dipeptides \[\to \] Amino acid done
clear
D)
Lipid \[\to \] Fatty acid + glycerol done
clear
View Solution play_arrow
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question_answer117)
During the process of digestion, the raw starch present in the diet is digested by: (PCS 2000)
A)
salivary amylase only done
clear
B)
pancreatic amylase only done
clear
C)
both the salivary and pancreatic amylases done
clear
D)
not digested at all done
clear
View Solution play_arrow
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question_answer118)
Amylopsin acts upon: (BHU 2007)
A)
polypeptides done
clear
B)
polysaccharide in any medium done
clear
C)
polysaccharide in acidic medium done
clear
D)
polysaccharide in alkaline medium done
clear
View Solution play_arrow
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question_answer119)
Which of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product? (CBSE 2008)
A)
\[Stomach:\text{ }Fats\xrightarrow{Lipase}Micelles\] done
clear
B)
\[Duodenum:\text{ }Triglycerides~\xrightarrow{Tryp\sin }\]\[Monoglycerides\] done
clear
C)
\[Small\,\,intestine:\,\,Starch\xrightarrow{\alpha -amylase}\]\[Disaccharide\text{ }\left( Maltose \right)\] done
clear
D)
(d)\[Small\text{ }intestine:\text{ }Proteins\text{ }\xrightarrow{Pep\sin }\text{ }Amino\,\,\]\[acids\] done
clear
View Solution play_arrow
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question_answer120)
The digestion of starch by amylase is completed in the: (Kerala PMT 2003)
A)
mouth done
clear
B)
oesophagus done
clear
C)
stomach done
clear
D)
duodenum done
clear
E)
ileum done
clear
View Solution play_arrow
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question_answer121)
The enzyme invertase hydrolyses:
A)
starch to sucrose done
clear
B)
glucose to sucrose done
clear
C)
cellulose to starch done
clear
D)
sucrose to glucose and fructose done
clear
View Solution play_arrow
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question_answer122)
Enzyme maltase in human gut acts on food at a pH of:
A)
less than seven to change starch into maltose done
clear
B)
more than seven to change starch into maltose done
clear
C)
less than seven to change maltose into glucose done
clear
D)
more than seven to change maltose into glucose done
clear
View Solution play_arrow
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question_answer123)
Maltase converts: (Orissa JEE 2005; Pb. PMT 2007)
A)
maltose to glucose at pH greater than 7.0 done
clear
B)
maltose to glucose at pH lesser than 7.0 done
clear
C)
starch to maltose at higher pH than 7.0 done
clear
D)
maltose to alcohol done
clear
View Solution play_arrow
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question_answer124)
Which of these is not an enzyme?
A)
Urease done
clear
B)
Sucrase done
clear
C)
Maltose done
clear
D)
Amylase done
clear
View Solution play_arrow
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question_answer125)
Lactase is found in: (MPPMT 2000)
A)
bile done
clear
B)
saliva done
clear
C)
intestinal juice done
clear
D)
pancreatic juice done
clear
View Solution play_arrow
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question_answer126)
Lactose is hydrolysed into: (COMEDK's 2007)
A)
fructose only done
clear
B)
glucose only done
clear
C)
glucose + fructose done
clear
D)
glucose + galactose done
clear
View Solution play_arrow
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question_answer127)
The following is a scheme showing the fate of carbohydrates during digestion in the human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C and D. Choose the correct option from those given: (Karnataka CET 2006)
A)
A = amylase, B = maltase, C = lactase, D = invertase done
clear
B)
A = amylase, B = maltase, C = invertase, D = lactase done
clear
C)
A = amylase, B = invertase, C = maltase, D = lactase done
clear
D)
A = amylase, B = lactase, C = maltase, D = invertase done
clear
View Solution play_arrow
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question_answer128)
Fat is hydrolysed by enzyme lipase to yield: (PCS 2005)
A)
glycerine and water done
clear
B)
glycerol and fatty acids done
clear
C)
glycerol and amino acids done
clear
D)
fatty acids and amino acids done
clear
View Solution play_arrow
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question_answer129)
The enzyme which hydrolyses triglycerides to fatty acids and glycerol is called: (CBSE 2004)
A)
lipase done
clear
B)
pepsin done
clear
C)
maltase done
clear
D)
zymase done
clear
View Solution play_arrow
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question_answer130)
Succus entericus is: (JCECE 2008)
A)
intestinal juice done
clear
B)
any swelling in gut done
clear
C)
vermiform appendix done
clear
D)
swollen area between ileum and rectum done
clear
View Solution play_arrow
-
question_answer131)
Succus entericus is secreted by: (Karnataka CET 2007)
A)
Crypts of Lieberkuhn done
clear
B)
Brunner's gland done
clear
C)
Both [a] and [b] done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer132)
The pH of succus entericus is:
A)
7.6 done
clear
B)
6.6 done
clear
C)
5.6 done
clear
D)
2.0 done
clear
View Solution play_arrow
-
question_answer133)
Which one is not found in intestinal juice?
A)
HCl done
clear
B)
Water done
clear
C)
Erepsin done
clear
D)
Maltase done
clear
View Solution play_arrow
-
question_answer134)
What is the function of goblet cells? (MPPMT 2004)
A)
Production of HCl done
clear
B)
Production of mucin done
clear
C)
Production of enzyme done
clear
D)
Production of hormone done
clear
View Solution play_arrow
-
question_answer135)
In humans, digestion of food is completed in the: (CPMT 2006)
A)
mouth done
clear
B)
stomach done
clear
C)
small intestine done
clear
D)
large intestine done
clear
View Solution play_arrow
-
question_answer136)
Digestion of protein is completed in: (CPMT 2007; JCECE 2008)
A)
stomach done
clear
B)
duodenum done
clear
C)
ileum done
clear
D)
duodenum and ileum done
clear
View Solution play_arrow
-
question_answer137)
End products of protein digestion are: (Har. PMT 2005)
A)
sugars done
clear
B)
glucose done
clear
C)
amino acids done
clear
D)
nucleotides done
clear
View Solution play_arrow
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question_answer138)
Most digestion occurs in:
A)
mouth done
clear
B)
stomach done
clear
C)
small intestine done
clear
D)
large intestine done
clear
View Solution play_arrow
-
question_answer139)
Digestion of carbohydrates, proteins and fats is completed in:
A)
liver done
clear
B)
stomach done
clear
C)
small intestine done
clear
D)
large intestine done
clear
View Solution play_arrow
-
question_answer140)
Which is a group of end products of carbohydrate digestion?
A)
Sucrose, galactose, maltose done
clear
B)
Glucose, galactose, fructose done
clear
C)
Maltose, glucose, galactose done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer141)
Which of the following processes does not take place when glucose in eaten? (JKCMEE 2002)
A)
Ingestion done
clear
B)
Digestion done
clear
C)
Absorption done
clear
D)
Assimilation done
clear
View Solution play_arrow
-
question_answer142)
Which of the following is correct chronological order for the enzyme activity of some enzymes taking part in protein digestion? (Gujarat CET 2006)
A)
Pepsin \[\to \] Trypsin \[\to \] Peptidase done
clear
B)
Pepsin \[\to \] Peptidase \[\to \] Trypsin done
clear
C)
Trypsin \[\to \] Pepsin \[\to \] Peptidase done
clear
D)
Peptidase \[\to \] Trypsin \[\to \] Pepsin done
clear
View Solution play_arrow
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question_answer143)
The end products of fat digestion are:
A)
glucose done
clear
B)
alkaloids done
clear
C)
fatty acids done
clear
D)
amino acids done
clear
View Solution play_arrow
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question_answer144)
A certain person is eating boiled potato. One of the food components in it is: (CBSE 2000)
A)
lactose which is indigestible done
clear
B)
starch which does not get digested done
clear
C)
cellulose which is digested by cellulase done
clear
D)
DNA which gets digested by pancreatic DNase done
clear
View Solution play_arrow
-
question_answer145)
Man cannot digest cellulose, whereas cow and other herbivores can because:
A)
they have symbiotic microbes in their alimentary canal which digest cellulose done
clear
B)
they have enzyme cellulase in their stomach done
clear
C)
they masticate it well by chewing with teeth done
clear
D)
none of the above done
clear
View Solution play_arrow
-
question_answer146)
Which group contains biocatalysts?
A)
Erepsin, amylase, rennin done
clear
B)
Rhodopsin, pepsin, steapsin done
clear
C)
Myosin, oxytocin, adrenaline done
clear
D)
Glucose, amino acids, fatty acids done
clear
View Solution play_arrow
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question_answer147)
Some proteolytic enzymes are: (Orissa JEE 2010)
A)
amylase, lipase and zymase done
clear
B)
trypsin, erepsin and pepsin done
clear
C)
amylopsin, steapsin and ptyalin done
clear
D)
urease, dehydrogenase and zymase done
clear
View Solution play_arrow
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question_answer148)
Statement common to amylase, rennin and trypsin:
A)
These are all proteins done
clear
B)
These are produced in stomach done
clear
C)
These act at a pH lower than 7 done
clear
D)
These are all proteolytic enzymes done
clear
View Solution play_arrow
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question_answer149)
What is common among amylase, rennin and trypsin? (CPMT 2000)
A)
These are all proteins done
clear
B)
These act at a pH lower than 7 done
clear
C)
These are produced in stomach done
clear
D)
These are all proteolytic enzymes done
clear
View Solution play_arrow
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question_answer150)
Match the following and choose the correct combination from the options given:
| Column I | | Column II |
A. | A Ptyalin | 1. | 1 Lipids |
B. | B Pepsin | 2. | 2 Starch |
C. | C Steapsin | 3. | 3 DMA |
D. | D Nuclease | 4. | 4 Proteins |
(Kerala PMT 2004)
A)
A = 1, B = 3, C = 2, D = 4 done
clear
B)
A = 1, B = 4, C = 3, D = 2 done
clear
C)
A = 2, B = 4, C = 1, D = 3 done
clear
D)
A = 2, B = 3, C = 1, D = 4 done
clear
E)
A = 4, B = 3, C = 1, D = 2 done
clear
View Solution play_arrow
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question_answer151)
In which of the following, putrefying bacteria are present? (BHU 2006; Wardha 2008)
A)
Liver done
clear
B)
Colon done
clear
C)
Stomach done
clear
D)
Intestine done
clear
View Solution play_arrow
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question_answer152)
Read the statements [A] and [B]; | |
(A): The human small intestine is the longest portion in the alimentary canal. | |
(B): Absorption of digested food requires a very large surface area. | |
Identify the correct choice on the two statements: | (Karnataka CET 2005) |
A)
Statement [A] is correct, [B] is wrong done
clear
B)
Statement [A] and [B] are both correct done
clear
C)
Both the statements are wrong done
clear
D)
Statement [B] is correct, [A] is wrong done
clear
View Solution play_arrow
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question_answer153)
Nutrients absorbed by the blood capillaries in intestinal villi first go into:
A)
aorta done
clear
B)
hepatic artery done
clear
C)
posterior vena cava done
clear
D)
liver through hepatic portal vein done
clear
View Solution play_arrow
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question_answer154)
Which of the following sugars is absorbed from the small intestine by facilitated diffusion?
A)
Glucose done
clear
B)
Sucrose done
clear
C)
Lactose done
clear
D)
Fructose done
clear
View Solution play_arrow
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question_answer155)
Glucose and amino acids are absorbed in the intestine by: (JIPME R2002)
A)
osmosis done
clear
B)
active transport done
clear
C)
passive transport done
clear
D)
selective absorption done
clear
View Solution play_arrow
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question_answer156)
Fats are absorbed after:
A)
as such done
clear
B)
digestion done
clear
C)
hydrolysis done
clear
D)
emulsification done
clear
View Solution play_arrow
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question_answer157)
The absorption of glycerol, fatty acids and monoglycerides takes place by the:
A)
colon done
clear
B)
wall of the stomach done
clear
C)
capillaries within the villi done
clear
D)
lymph vessels within the villi done
clear
View Solution play_arrow
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question_answer158)
The main function of lacteals in the villi of human small intestine is the absorption of: (Karnataka CET 2005, 06)
A)
glucose and vitamins done
clear
B)
fatty acids and glycerol done
clear
C)
water and mineral salts done
clear
D)
amino acids and glucose done
clear
View Solution play_arrow
-
question_answer159)
Fatty acids and monoglycerides absorbed from mammalian intestine first reach:
A)
hepatic vein done
clear
B)
lymph vessels done
clear
C)
hepatic portal vein done
clear
D)
anterior mesenteric vein done
clear
View Solution play_arrow
-
question_answer160)
Fatty acids and glycerol are first absorbed by:
A)
villi done
clear
B)
lacteals done
clear
C)
blood capillaries done
clear
D)
hepatic portal vein done
clear
View Solution play_arrow
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question_answer161)
The fats absorbed from the gut are transported to the blood in the form of: (Kerala PMT 2001)
A)
micelles done
clear
B)
liposomes done
clear
C)
chylomicrons done
clear
D)
chemomicrons done
clear
View Solution play_arrow
-
question_answer162)
Fats absorbed into lacteals as chylomicrons are: (AMU 2003)
A)
glycerol done
clear
B)
fatty acids done
clear
C)
triglycerides done
clear
D)
monoglycerides done
clear
View Solution play_arrow
-
question_answer163)
Chylomicrons are:
A)
undigested proteins done
clear
B)
undigested carbohydrates done
clear
C)
fat droplets coated with phospholipids done
clear
D)
fat droplets coated with glycerol and proteins done
clear
View Solution play_arrow
-
question_answer164)
Chylomicrons are concerned with: (CPMT 2006)
A)
digestion of fats done
clear
B)
absorption of fats done
clear
C)
digestion of proteins done
clear
D)
absorption of proteins done
clear
View Solution play_arrow
-
question_answer165)
Micelles increase the absorption of fat by:
A)
facilitating absorption into the lacteals done
clear
B)
metabolizing triglyceride to monoglyceride done
clear
C)
keeping the insoluble products of fat digestion in small aggregates done
clear
D)
promoting direct absorption across the intestinal epithelium done
clear
View Solution play_arrow
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question_answer166)
Maximum absorption of water occurs in: (JEPMER 2006)
A)
colon done
clear
B)
rectum done
clear
C)
small intestine done
clear
D)
large intestine done
clear
View Solution play_arrow
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question_answer167)
Which of the following is the primary absorptive process in the large intestine?
A)
Active secretion of chloride from the blood done
clear
B)
Active absorption of bicarbonate into the blood done
clear
C)
Active transport of sodium from the lumen to the blood done
clear
D)
Active transport of potassium from the lumen to the blood done
clear
View Solution play_arrow
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question_answer168)
Absorption of salt and water is the principal function of which region of GI tract?
A)
Jejunum done
clear
B)
Stomach done
clear
C)
Duodenum done
clear
D)
Large intestine done
clear
View Solution play_arrow
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question_answer169)
Yellow colour of faeces is due to: (Orissa JEE 2006)
A)
bile secretion done
clear
B)
green colour of bile juice done
clear
C)
excessive diet of turmeric done
clear
D)
degradation product of haemoglobin done
clear
View Solution play_arrow
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question_answer170)
The normal brown-red colour of faeces is due to the presence of:
A)
bilirubin done
clear
B)
biliverdin done
clear
C)
stercobilin done
clear
D)
urobilinogen done
clear
View Solution play_arrow
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question_answer171)
Stool of a person contains whitish grey colour due to malfunction of which of the following organs? (CBSE 2002)
A)
Liver done
clear
B)
Spleen done
clear
C)
Kidney done
clear
D)
Pancreas done
clear
View Solution play_arrow