Which of the following factors does not affect membrane permeability?

a. temperature
b. the amount of cholesterol in the membrane
c. the polarity of membrane phospholipids
d. the saturation of hydrocarbon tails in membrane phospholipids


Answer: c. the polarity of membrane phospholipids

Biology & Microbiology

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What kinds of solutes move straight through the plasma membrane easily and unassisted?

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Small doses of ionizing radiation over a long period of time cause less damage because

a. they are too low to affect cells. b. they don't hit as many targets. c. the body has time to repair damaged DNA. d. the radiation is absorbed by macrophages. e. the radiation is absorbed by red blood cells.

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The axon branches of a typical neuron terminate at structures called

A) synapses. B) boutons. C) glia. D) nodes of Ranvier. E) the myelin sheath.

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bolus

What will be an ideal response?

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