E-PolyLearning

71. The movement across membrane depends upon
a. Diffusion
b. Electrostatic force
c. both a and b
d. Osmosis
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Answer: (c).both a and b

72. The movement of ions across selectively permeable membrane is called
a. electron flow
b. Osmosis
c. flow rate
d. Endocytosis
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Answer: (b).Osmosis

73. The enzyme that makes ATP by chemiosmosis is
a. ATP dehydrogenase
b. Gyrase
c. ATP synthase
d. dehydrogenase
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Answer: (c).ATP synthase

74. Chemiosmosis hypothesis was proposed by
a. Peter D. Mitchell
b. Charles Darwin
c. Mendel
d. Alfred Russell
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Answer: (a).Peter D. Mitchell

75. The measure of potential energy stored as combination of proton and voltage gradients across membrane is termed as
a. electron motive force
b. proton motive force
c. ion motive force
d. molecule motive force
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Answer: (b).proton motive force