Question

139. Selective permeable membrane allow passage of
a) Solutes only
b) Solvent only
c) Some solvent and all solutes

d) Some solutes and all solvent
140. Diffusion of water from selective permeable
membrane is called
a) Active transport b) Passive transport
c) Osmosis
d) Diffusion
141. Lipid bilayers in biomembrane are barrier to
a) Polar molecules b) Non-polar molecules
c) Both a and b
d) None of these
142. Proteins in the membrane serves as
a) Receptors

b) Carriers
c) Enzyme and energy transducers
d) All of these
143. The fluid mosaic model explains

a) Structural aspects of cell membrane
b) Functional aspects of cell membrane
c) Embryonic origin of cell membrane
d) Both a and b
144. Elasticity of cell membrane is due to
a) Lipids
b) Proteins
c) Water
d) Oligosaccharides
145. Transmebrane proteins in cell membrane are
a) Intrinsic proteins b) Extrinsic proteins
c) Tunnel proteins d) Glycocalyx
146. The functional characteristic of plasma membrane
in fluid mosaic model are determined by
a) Extrinsic protein b) Intrinsic proteins
c) Lipid molecules d) Both a and b
147. According to fluid mosaic medel of biomembrane,
there are
a) 30% intrinsic and 70% extrinsic proteins
b) 50% intrinsic and 50% extrinsic proteins
c) 70% intrinsic and 30% extrinsic proteins
d) There is no fixed ratio of these prteins
148. Function of plasma membrane is
a) Osmosis
b) Diffusion
c) Active transport
d) All of these
149. Which is not a cell junction
a) Desmosome
b) Gap junction
c) Plasmodesmata d) Tight junction
150. The major constituent of biological membrane is
a) Lipid
b) Protein
c) Carbohydrate d) Nucleic acid
​

Answer 1

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Explanation:

139. ( D ) some solutes and all solvents

140. Osmosis

141. non polar molecules

142.Enzyme and energy transducers

143. Both a & b

Structural aspects of cell membrane

and Functional aspects of cell membrane.

144.Lipids

145.Tunnel proteins

146.Both a & b

Extrinsic protein and Intrinsic proteins

147.

148. All of these

Osmosis

Diffusion

Active transport

149. Plasmodesmata

150. Nucleic acid