Biology Multiple Choice Questions and Answers for Different Competitive Exams

Multiple Choice Questions on Plasma Membrane

11. Lipid bi layer is
a) hydrophilic
b) hydrophobic
c) hydrophilic and hydrophobic
d) depends on the surrounding medium
12. Which of the following membrane has the largest amount of proteins
a) erythrocyte membrane
b) myelin sheath membrane
c) inner mitochondrial membrane
d) outer mitochondrial membrane
13. High lipid content is a characteristic of
a) erythrocyte membrane
b) myelin sheath membrane
c) inner mitochondrial membrane
d) outer mitochondrial membrane
14. The distribution of intrinsic proteins in the cell membrane is
a) symmetrical
b)assymetrical
c) random
d)uniform
15. In cell membrane, carbohydrates in glycoproteins or glycolipids are oriented
a) towards outside
b)towards inside
c) towards outside and inside
d)randomly distributed
16. The plasma membrane is impermeable to all molecules except
a) Glucose
b) ATP
c)rea
d)K+
17.  The erythrocyte glucose transporter is an example of

facilitated diffusion
a)simple diffusion
b)active transport
c) facilitated diffusion
d) ion driven active transport
18. Which of the following transport induces conformational change in protein
a) simple diffusion
b) active transport
c) facilitated diffusion
d) ion driven active transport
19. Na+ glucose transporter is an example of
a) facilitated diffusion
b) ATP driven active transport
c) Symport
d) antiport
20. Clathrin coated pits are associated with
a) phagocytosis
b) pinocytosis
c) receptor mediated endocytosis
d) exocytosis
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Answers
11.c) hydrophilic and hydrophobic
12.c) inner mitochondrial membrane
13. b) myelin sheath membrane
14. b)assymetrical
15. a) towards outside
16. c) urea
17. c) facilitated diffusion
18. c) facilitated diffusion
19. c) Symport
20. c)receptor mediated endocytosis
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