JEE Main & Advanced Chemistry Biomolecules / जैव-अणु Question Bank

done Vitamins Hormones and Nucleic Acids Total Questions - 46

• question_answer1)
  A nucleotide consists of
  A)
                  Base and sugar  done clear
  B)
                  Base and phosphate done clear
  C)
                  Sugar and phosphate     done clear
  D)
                  Base, sugar and phosphate done clear
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• question_answer2)
  Which of the following is responsible for heredity character
  A)
                  DNA       done clear
  B)
                  RNA done clear
  C)
                  Proteins               done clear
  D)
                  Hormones done clear
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• question_answer3)
  The base adenine occurs in         [MP PMT 1995]
  A)
                  DNA only             done clear
  B)
                  RNA only done clear
  C)
                  DNA and RNA both         done clear
  D)
                  Protein done clear
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• question_answer4)
  The protein which maintains blood sugar level in the human body            [KCET 1993; MP PMT 1995]
  A)
                  Haemoglobin     done clear
  B)
                  Oxytocin done clear
  C)
                  Insulin   done clear
  D)
                  Ptyalin done clear
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• question_answer5)
  Which of the following statements about the assembly of nucleotides in a molecule of deoxyribose nucleic acid (DNA) is correct                                  [Manipal MEE 1995]
  A)
                  A pentose of one unit connects to a pentose of another done clear
  B)
                  A pentose of one unit connects to the base of another done clear
  C)
                  A phosphate of one unit connects to a pentose of another done clear
  D)
                  A phosphate of one unit connects to the base of another done clear
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• question_answer6)
  Vitamin A is present in   [MP PET 1995, 2000]
  A)
                  Cod liver oil         done clear
  B)
                  Carrot done clear
  C)
                  Milk       done clear
  D)
                  In all of these done clear
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• question_answer7)
  Ascorbic acid is a               [Bihar CEE 1995; MP PET 1995]
  A)
                  Vitamin                done clear
  B)
                  Enzyme done clear
  C)
                  Protein done clear
  D)
                  Carbohydrate done clear
  View Solution play_arrow

• question_answer8)
  The chemical name of vitamin C is            [J & K 2005]
  A)
                  Ascorbic acid      done clear
  B)
                  Folic acid done clear
  C)
                  Nicotinic acid      done clear
  D)
                  Tartaric acid done clear
  View Solution play_arrow

• question_answer9)
  Which of the following is not a constituent of RNA [MP PET 1996]
  A)
                  Ribose  done clear
  B)
                  Phosphate done clear
  C)
                  Adenine               done clear
  D)
                  Pyridine done clear
  View Solution play_arrow

• question_answer10)
  Which one is found in ATP ribonucleotide
  A)
                  Guanine               done clear
  B)
                  Uracil done clear
  C)
                  Adenine               done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer11)
  Which of the following proteins acts as a messenger in living system
  A)
                  Harmone             done clear
  B)
                  Enzyme done clear
  C)
                  Protective protein           done clear
  D)
                  Transport protein done clear
  View Solution play_arrow

• question_answer12)
  Which substance is not present in nucleic acid [MP PET/PMT 1998]
  A)
                  Cytosine              done clear
  B)
                  Adenine done clear
  C)
                  Thymine              done clear
  D)
                  Guanidine done clear
  View Solution play_arrow

• question_answer13)
  The deficiency of vitamin \[{{B}_{1}}\] causes [CPMT 1994; MP PMT 1999; BHU 2000]
  A)
                  Beri-beri              done clear
  B)
                  Scurvy done clear
  C)
                  Rickets  done clear
  D)
                  Anaemia done clear
  View Solution play_arrow

• question_answer14)
  Which of the following is not present in nucleic acids [MP PMT 1999]
  A)
                  Uracil     done clear
  B)
                  2-aminopyridine done clear
  C)
                  Thymine              done clear
  D)
                  Adenine done clear
  View Solution play_arrow

• question_answer15)
  In nucleic acids, the sequence is                [AIIMS 1996]
  A)
                  Base-phosphate-sugar  done clear
  B)
                  Phosphate-base-sugar done clear
  C)
                  Sugar-base-phosphate  done clear
  D)
                  Base-sugar-phosphate done clear
  View Solution play_arrow

• question_answer16)
  The segment of DNA which acts as the instructional manual for the synthesis of the protein is    [Pb. PMT 1998]
  A)
                  Nucleoside         done clear
  B)
                  Nucleotide done clear
  C)
                  Ribose  done clear
  D)
                  Gene done clear
  View Solution play_arrow

• question_answer17)
  The double helical structure of DNA was proposed by [KCET 1998]
  A)
                  Watson and Crick             done clear
  B)
                  Meicher done clear
  C)
                  Emil Fischer        done clear
  D)
                  Khorana done clear
  View Solution play_arrow

• question_answer18)
  A segment of DNA molecule which codes or specifies for one polypeptide chain is called               [KCET 1998]
  A)
                  Phosphate group             done clear
  B)
                  Adenine done clear
  C)
                  Gene     done clear
  D)
                  Amino acid done clear
  View Solution play_arrow

• question_answer19)
  In DNA, the complementary bases are   [CBSE PMT 1998]
  A)
                  Uracil and adenine; cytosine and guanine done clear
  B)
                  Adenine and thymine; guanine and cytosine done clear
  C)
                  Adenine and thymine; guanine and uracil done clear
  D)
                  Adenine and guanine; thymine and cytosine done clear
  View Solution play_arrow

• question_answer20)
  The structure of DNA is [AFMC 1999]
  A)
                  Linear    done clear
  B)
                  Single helix done clear
  C)
                  Double helix       done clear
  D)
                  Triple helix done clear
  View Solution play_arrow

• question_answer21)
  Vitamin \[{{B}_{1}}\] is [MP PMT 2000]
  A)
                  Riboflavin            done clear
  B)
                  Cobalamin done clear
  C)
                  Thiamine             done clear
  D)
                  Pyridoxine done clear
  View Solution play_arrow

• question_answer22)
  A gene is a segment of a molecule of      [AIIMS 1999]
  A)
                  DNA       done clear
  B)
                  m-RNA done clear
  C)
                  t-RNA    done clear
  D)
                  Protein done clear
  View Solution play_arrow

• question_answer23)
  The deficiency of vitamin-C causes [MP PMT 2000; CPMT 2000]
  A)
                  Scurvy   done clear
  B)
                  Rickets done clear
  C)
                  Pyrrohea             done clear
  D)
                  Pernicious Anaemia done clear
  View Solution play_arrow

• question_answer24)
  DNA contains the sugar [MP PMT 2000]
  A)
                  Deoxyribose      done clear
  B)
                  Ribose done clear
  C)
                  D-Fructose          done clear
  D)
                  D-glucose done clear
  View Solution play_arrow

• question_answer25)
  Which of the following is not a sex hormone [MP PMT 2000]
  A)
                  Testosterone     done clear
  B)
                  Estrone done clear
  C)
                  Estradiol               done clear
  D)
                  Cortisone done clear
  View Solution play_arrow

• question_answer26)
  Acquired immune deficiency syndroms (AIDS) is characterised                                   [AIIMS 2000]
  A)
                  Killer T-cells        done clear
  B)
                  Reduction in number of helper T-cells done clear
  C)
                  An autoimmune disease done clear
  D)
                  Inability of body to produce interferons done clear
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• question_answer27)
  The base present in DNA, but not in RNA is  [KCET (Engg.) 2001; NCERT 1978; Manipal MEE 1985; MP PMT 1994, MP PET 1995; DCE 2004]
  A)
                  Guanine               done clear
  B)
                  Adenine done clear
  C)
                  Uracil     done clear
  D)
                  Thymine done clear
  View Solution play_arrow

• question_answer28)
  Mutation of DNA occurs due to changes in the sequence of one of the following              [MP PMT 2001]
  A)
                  Bases    done clear
  B)
                  Ribose units done clear
  C)
                  Phosphate units               done clear
  D)
                  Sugar units done clear
  View Solution play_arrow

• question_answer29)
  Which of the following is not true about vitamins [AFMC 2001]
  A)
                  They are vital for life done clear
  B)
                  They help in digestion done clear
  C)
                  They were named by ?Funic? done clear
  D)
                  Their deficiency causes diseases done clear
  View Solution play_arrow

• question_answer30)
  Blood calcium level can be increased by the administration of                                     [AFMC 2001]
  A)
                  Glucogon             done clear
  B)
                  Calcitonin done clear
  C)
                  Thyroxine            done clear
  D)
                  Paratharmone done clear
  View Solution play_arrow

• question_answer31)
  The first harmone chemically synthesised in the laboratory is [BHU 2002]
  A)
                  Cortisone            done clear
  B)
                  Insuline done clear
  C)
                  Adrenaline          done clear
  D)
                  Estrone done clear
  View Solution play_arrow

• question_answer32)
  Purine derivative among the following bases is [KCET (Med./Engg.) 2002; MPPET 2004]
  A)
                  Guanine               done clear
  B)
                  Cytosine done clear
  C)
                  Thymine              done clear
  D)
                  Uracil done clear
  View Solution play_arrow

• question_answer33)
  RNA is different from DNA because RNA contains [AIEEE 2002, 04]
  A)
                  Ribose sugar and thymine done clear
  B)
                  Ribose sugar and uracil done clear
  C)
                  Deoxyribose sugar and thymine done clear
  D)
                  Deoxyribose sugar and uracil done clear
  View Solution play_arrow

• question_answer34)
  Deficiency of which vitamin causes rickets            [MP PET 2002]
  A)
                  Vitamin-D            done clear
  B)
                  Vitamin-B done clear
  C)
                  Vitamin-A            done clear
  D)
                  Vitamin-K done clear
  View Solution play_arrow

• question_answer35)
  Which do the following vitamins has isoprene units in its structure                                           [JIPMER 2002]
  A)
                  Vitamin A            done clear
  B)
                  Vitamin C done clear
  C)
                  Vitamin \[{{B}_{2}}\]      done clear
  D)
                  Vitamin D done clear
  View Solution play_arrow

• question_answer36)
  The reason for double helical structure of DNA is operation of    [CBSE PMT 2003; DPMT 2004]
  A)
                  Vander Waal's forces     done clear
  B)
                  Dipole-dipole interaction done clear
  C)
                  Hydrogen bonding done clear
  D)
                  Electrostatic attractions done clear
  View Solution play_arrow

• question_answer37)
  The tripeptide harmone present in most living cells is... [KCET 2003]
  A)
                  Glutathione        done clear
  B)
                  Glutamine done clear
  C)
                  Oxytocin              done clear
  D)
                  Ptyalin done clear
  View Solution play_arrow

• question_answer38)
  The function of DNA in an organism is    [DCE 2003]
  A)
                  To assist in the synthesis of RNA molecule done clear
  B)
                  To store information of heredity characteristics done clear
  C)
                  To assist in the synthesis of proteins and polypeptides done clear
  D)
                  All of these done clear
  View Solution play_arrow

• question_answer39)
  The harmone that helps in the conversion of glucose to glycogen in                                         [CBSE PMT 2004]
  A)
                  Adrenaline          done clear
  B)
                  Insulin done clear
  C)
                  Cortisone            done clear
  D)
                  Bile acids done clear
  View Solution play_arrow

• question_answer40)
  Insulin production and its action in human body are responsible for the level of diabetes. This compound belongs to which of the following categories          [AIEEE 2004]
  A)
                  An enzyme         done clear
  B)
                  A harmone done clear
  C)
                  A co-enzyme     done clear
  D)
                  An antibiotic done clear
  View Solution play_arrow

• question_answer41)
  Codon is present in                                         [Pb. PMT 2004]
  A)
                  t-RNA    done clear
  B)
                  m-RNA done clear
  C)
                  r-RNA    done clear
  D)
                  All of these done clear
  View Solution play_arrow

• question_answer42)
  Energy is stored in our body in the form  of [CBSE PMT 2001; KCET 2003]
  A)
                  ATP        done clear
  B)
                  ADP done clear
  C)
                  Fats        done clear
  D)
                  Carbohydrates done clear
  View Solution play_arrow

• question_answer43)
  Nucleic acid is a polymer of                                          [MP PMT 2004]
  A)
                  Nucleosides       done clear
  B)
                  \[\alpha -\]amino acids done clear
  C)
                  Nucleotides        done clear
  D)
                  Glucose done clear
  View Solution play_arrow

• question_answer44)
  A nucleoside on hydrolysis gives                               [KCET 2004]
  A)
                  A heterocyclic base and orthophosphoric acid done clear
  B)
                  An aldopentose, a heterocyclic base and orthophosphoric acid done clear
  C)
                  An aldopentose and a heterocyclic base done clear
  D)
                  An aldopentose and orthophosphoric acid done clear
  View Solution play_arrow

• question_answer45)
  An alternation in the base sequence of nucleic acid molecule is called                                     [Kerala PMT 2004]
  A)
                  Replication          done clear
  B)
                  Mutation done clear
  C)
                  Duplication         done clear
  D)
                  Dislocation done clear
  E)
                  Flocculation done clear
  View Solution play_arrow

• question_answer46)
  Vitamin B6 is known as                                   [DCE 2004]
  A)
                  Pyridoxin             done clear
  B)
                  Thiamine done clear
  C)
                  Tocopherol         done clear
  D)
                  Riboflavin done clear
  View Solution play_arrow