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question_answer1)
Plasma membrane is made up of [MP PMT 1997, 2001; CBSE PMT 2002]
A)
A protein layer between two lipid layers done
clear
B)
A lipid layer between two protein layers done
clear
C)
A protein, a lipid and a cellulose layer done
clear
D)
Bimolecular lipid layer surrounded by protein layers done
clear
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question_answer2)
For cell membrane, name "plasmalemma'' was given by
A)
Porter done
clear
B)
Nageli done
clear
C)
Cramer done
clear
D)
J. Q. Plowe done
clear
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question_answer3)
Which pair of structures are usually found in both plant and animal cells
A)
Cell membrane and nucleolus done
clear
B)
Cell membrane and cell wall done
clear
C)
Nucleolus and chloroplast done
clear
D)
Nucleus and cell wall done
clear
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question_answer4)
Beet root if kept in cold water anthocyanin does not come out due to plasma membrane [BHU 2003]
A)
Differentially permeable done
clear
B)
Impermeable to anthocyanins done
clear
C)
Permeable to anthocyanins done
clear
D)
Dead done
clear
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question_answer5)
Which of the following layer is present nearest to plasma membrane in plant cell [AFMC 2002]
A)
Secondary wall done
clear
B)
Middle lamella done
clear
C)
Primary wall done
clear
D)
Tonoplast done
clear
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question_answer6)
According to Robertson, thickness of lipid zone in the cell membrane ranges from
A)
\[\text{10-20}\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
B)
\[\text{25-35}\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
C)
\[\text{50-60}\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
D)
\[\text{35-50}\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
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question_answer7)
Lipid molecule in plasma membrane are arranged in [CPMT 2002]
A)
Scattered done
clear
B)
Series done
clear
C)
Alternate done
clear
D)
Head parallel done
clear
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question_answer8)
Phospholipids are [Pb. PMT 2000]
A)
Amphipathic done
clear
B)
Amphibolic done
clear
C)
Hydrophobic done
clear
D)
None of these done
clear
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question_answer9)
Ion carriers are located in [KCET 2000]
A)
Nucleus done
clear
B)
Cell wall done
clear
C)
Cellular space done
clear
D)
Plasma membranes done
clear
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question_answer10)
The plasma membrane is composed of [MP PMT 1996]
A)
Proteins done
clear
B)
Lipids done
clear
C)
Carbohydrates done
clear
D)
Both proteins and lipids done
clear
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question_answer11)
Desmosomes are concerned with [CBSE PMT 1995]
A)
Cell division done
clear
B)
Cellular excretion done
clear
C)
Cytolysis done
clear
D)
Cell adherence done
clear
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question_answer12)
The secretory material is discharged by the golgi vesicles, from the surface of cell membrane by
A)
Pinocytosis done
clear
B)
Endocytosis done
clear
C)
Reverse pinocytosis done
clear
D)
Dissolving the cell membrane done
clear
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question_answer13)
According to the 'Unit membrane model' the thickness of the cell membrane is about [MP PMT 1994]
A)
200 nm done
clear
B)
7.5 nm done
clear
C)
150 nm done
clear
D)
1.0 nm done
clear
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question_answer14)
Which of the following does not require carrier molecules during transport through cell membranes [BHU 1994]
A)
Simple diffusion done
clear
B)
Facilitated diffusion done
clear
C)
Na+ -K+ transport done
clear
D)
Active transport of sugars and amino acids done
clear
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question_answer15)
Which of the following structures controls the transport of the material into and out of living cells [NCERT 1978; BHU 1999]
A)
Centrosome done
clear
B)
Cell membrane done
clear
C)
Cell wall done
clear
D)
Ribosome done
clear
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question_answer16)
Every living cell has a [DPMT 1981]
A)
Membrane done
clear
B)
Food vacuole done
clear
C)
Chloroplast done
clear
D)
Cell wall done
clear
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question_answer17)
When a cell engulfs or surrounds a particle and forms a vesicle around it, the phenomenon is known as [AMU 1990]
A)
Exocytosis done
clear
B)
Phagocytosis done
clear
C)
Endocytosis done
clear
D)
None of these done
clear
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question_answer18)
The main difference between pinocytosis and phagocytosis is
A)
Taking in of fluid substances and engulfing of food material and foreign bodies done
clear
B)
Taking in of small and large particles respectively done
clear
C)
Taking in of small amount of liquid and large volume of liquids done
clear
D)
None of the above done
clear
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question_answer19)
Who proposed the concept of unit membrane for tripartite structure
A)
Davson and Deniell done
clear
B)
Robertson done
clear
C)
Sanger and Singer done
clear
D)
Scifriz done
clear
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question_answer20)
Which one of the following is present outside the plasma membrane but inside the cell wall
A)
Sphaerosome done
clear
B)
Peroxisome done
clear
C)
Lomasome done
clear
D)
Golgi body done
clear
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question_answer21)
Which one enzyme of plasma membrane gets inactivated in the absence of lipids
A)
ATPase done
clear
B)
Alkaline phosphatase done
clear
C)
Acid phosphomonoesterase done
clear
D)
RNAase done
clear
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question_answer22)
Which one of the following is not present in plasma membrane
A)
Phospholipids done
clear
B)
Albumins done
clear
C)
Oligosaccharides done
clear
D)
Spectrins done
clear
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question_answer23)
Thickness of bimolecular lipid layer is generally
A)
\[\text{20 }\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
B)
\[\text{30 }\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
C)
\[\text{40 }\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
D)
\[\text{60 }\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
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question_answer24)
Bulk drinking of fluid by cells is termed as [CBSE PMT 1993; CPMT 2000]
A)
Phagocytosis done
clear
B)
Pinocytosis done
clear
C)
Cyclosis done
clear
D)
Osmosis done
clear
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question_answer25)
Size of molecules that can pass through plasma membrane is [AMU 1991]
A)
\[\text{1-15 }\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
B)
\[\text{8-10 }\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
C)
\[\text{10-13}\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
D)
\[\text{15-75}\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
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question_answer26)
The process of cell eating is called [KCET 2000]
A)
Pinocytosis done
clear
B)
Phagocytosis done
clear
C)
Endocytosis done
clear
D)
Exocytosis done
clear
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question_answer27)
Which one statement regarding plasma membrane is correct
A)
Its outer and inner layer are electron dense while middle layer is electron transparent done
clear
B)
Its outer and middle layer are electron transparent while inner layer is electron dense done
clear
C)
Its outer and inner layer are electron transparent while middle one is electron dense done
clear
D)
All layers are electron dense done
clear
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question_answer28)
One of the fundamental characteristic of cell membrane is [DPMT 1993]
A)
Amino acid regulation done
clear
B)
Fat regulation done
clear
C)
Glucose regulation done
clear
D)
Ion regulation done
clear
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question_answer29)
According to mosaic model, plasma membrane is made up of [CBSE PMT 1988; DPMT 1982]
A)
Cellulose and hemicellulose done
clear
B)
Phospholipid and integrate protein done
clear
C)
Phospholipid, extrinsic and intrinsic protein done
clear
D)
Phospholipid and hemicellulose done
clear
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question_answer30)
Nature of plasma membrane is
A)
Permeable done
clear
B)
Semipermeable done
clear
C)
Impermeable done
clear
D)
None of the above done
clear
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question_answer31)
Singer and Nicholson's model of plasma membrane differs from Robertson's model in the [AIIMS 1984]
A)
Number of lipid layers done
clear
B)
Arrangement of lipid layers done
clear
C)
Arrangement of proteins done
clear
D)
Absence of protein in Singer and Nicholson's model done
clear
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question_answer32)
Desmosomes or Tonofibrils are
A)
Small particles done
clear
B)
Another name of golgi complex done
clear
C)
Formed in cytoplasm by the union of plasma membrane done
clear
D)
Ribosomes done
clear
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question_answer33)
Which is the latest model that is proposed to explain the structure of plasma membrane [DPMT 1981; BHU 2001; CBSE PMT 2002; BVP 2003]
A)
Fluid mosaic model done
clear
B)
Molecular model done
clear
C)
Unit membrane model done
clear
D)
None of the above done
clear
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question_answer34)
Kavanau's lipid pillar model cannot explain
A)
Passive transport done
clear
B)
Active transport done
clear
C)
Phagocytosis done
clear
D)
None of these done
clear
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question_answer35)
Cell membrane carbohydrates participate in
A)
Transporting substances across the membrane done
clear
B)
Cell to cell recognization done
clear
C)
Attaching the membrane to cytoskeleton done
clear
D)
Cell adhesion done
clear
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question_answer36)
Unit membrane is made of [DPMT 1992]
A)
Lipoproteins done
clear
B)
Cellulose done
clear
C)
Phospholipids done
clear
D)
Phosphoproteins done
clear
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question_answer37)
Membrane proteins are held in the bilayer mainly by
A)
Hydrophobic attraction done
clear
B)
Hydrophilic attraction done
clear
C)
Covalent bonds done
clear
D)
Ionic bonds done
clear
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question_answer38)
Thickness of plasma membrane is [MP PMT 2003]
A)
\[\text{10}\overset{\text{o}}{\mathop{\text{A}}}\,\,\,\text{to}\,\,\text{30}\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
B)
\[\text{30}\overset{\text{o}}{\mathop{\text{A}}}\,\,\,\text{to}\,\,\text{50}\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
C)
\[\text{50}\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\,\,\text{to}\,\,\text{70}\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
D)
\[\text{70}\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\,\,\text{to}\,\,\text{100}\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
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question_answer39)
Who proposed "fluid mosaic model" for plasma membrane [RPMT 1999; BHU 2000, 01; Orissa JEE 2004; Pb. PMT 2004]
A)
C. Cramer and C. Naegeli done
clear
B)
Singer and Nicholson done
clear
C)
Denielli and Davson done
clear
D)
J. D. Robertson done
clear
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question_answer40)
Which of the following constituent of biological membrane [CPMT 1987; MP PMT 2002, 03; AIEEE 2004]
A)
Phosphoprotein done
clear
B)
Protein and Phospholipid done
clear
C)
Phospholipids done
clear
D)
Cellulose done
clear
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question_answer41)
Which one of the following activator remains attached with ATP in plasma membrane
A)
\[\text{M}{{\text{g}}^{++}}\] done
clear
B)
\[C{{a}^{++}}\] done
clear
C)
\[{{K}^{+}}\] done
clear
D)
\[N{{a}^{+}}\] done
clear
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question_answer42)
Pinocytosis and phagocytosis are absent in
A)
Prokaryotic cells done
clear
B)
Eukaryotic animal cells done
clear
C)
Eukaryotic plant cells done
clear
D)
None of the above done
clear
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question_answer43)
Biological membranes are composed of
A)
40% proteins and 60% lipids done
clear
B)
50% proteins and 50% lipids done
clear
C)
70% proteins and 30% lipids done
clear
D)
60% proteins and 40% lipids done
clear
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question_answer44)
Active transport is affected by
A)
Cold done
clear
B)
Cynide done
clear
C)
Absence of\[{{O}_{2}}\] done
clear
D)
All of these done
clear
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question_answer45)
In Danielli and Davson's model polar end is represented by
A)
Circular done
clear
B)
Rod done
clear
C)
Thread done
clear
D)
Ribbon done
clear
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question_answer46)
Ephagy refers to
A)
Removal of metabolic waste by exocytosis done
clear
B)
Removal of metabolic waste by endocytosis done
clear
C)
Exudation of secretory products done
clear
D)
None of these done
clear
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question_answer47)
Pinocytosis and phagocytosis are concerned with
A)
Cell wall done
clear
B)
Protoplasm done
clear
C)
Nucleus done
clear
D)
None of these done
clear
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question_answer48)
Carbohydrates are present in the plasmalemma in the form of [BHU 1986, 91]
A)
Starch done
clear
B)
Cellulose done
clear
C)
Hemicellulose done
clear
D)
Phospholipids (glycolipids) and phosphoproteins (glycoproteins) done
clear
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question_answer49)
Lomasomes are found in [BVP 2000]
A)
Algal cell done
clear
B)
Fungal cell done
clear
C)
Yeast done
clear
D)
E. coli done
clear
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question_answer50)
Desmosome is modification of [MP PMT 2004]
A)
Plasma membrane done
clear
B)
Nucleous done
clear
C)
Golgi bodies done
clear
D)
ER-Nucleus complex done
clear
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question_answer51)
Single membrane bound organelles are [DPMT 2004]
A)
Lysosome done
clear
B)
Sphaerosome done
clear
C)
Glyoxysome done
clear
D)
All of these done
clear
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question_answer52)
The non-membranous organelles are [DPMT 2004]
A)
Centrioles done
clear
B)
Ribosomes done
clear
C)
Nucleolus done
clear
D)
All of these done
clear
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question_answer53)
Plasma membrane helps in [J&K CET 2005]
A)
Transportation of only water in and out of cell done
clear
B)
Protein sythesis done
clear
C)
Osmoregulation done
clear
D)
Nucleic acid synthesis done
clear
View Solution play_arrow
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question_answer54)
Which of the following controls permeability [Orissa JEE 2005]
A)
Cell membrane done
clear
B)
Cell wall done
clear
C)
Protoplasm done
clear
D)
Cytoplasm done
clear
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question_answer55)
According to widely accepted "Fluid mosaic model" cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements is incorrect [CBSE PMT 2005]
A)
Proteins in cell membranes can travel with in the lipid bilayer done
clear
B)
Proteins can also undergo flip-flap movements in the lipid bilayer done
clear
C)
Proteins can remain confined within certain domains of the membrane done
clear
D)
Many proteins remain completely embedded within the lipid bilayer done
clear
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question_answer56)
Membrane protein [AMU 2005]
A)
Works as recipient for informal moelcules done
clear
B)
Works as recipient for transportation done
clear
C)
Helps in cell recognisation done
clear
D)
Does all the above works done
clear
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