Online quiz 2

Online quiz 2 - Online Quiz 2: Results. (correct answers...

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Online Quiz 2: Results. (correct answers are highlighted) Question 1. Many organisms survive in environments of varying temperature. Fish, for example, live in water that may change its temperature a great deal between summer and winter, or between the surface and at depth. Which of the following changes in the composition of the plasmalemma would be most useful for an organism moving into colder environments? (Answer: increase the fraction of unsaturated fatty acids in the membrane lipids (B)) Answer Student response (%) Comments increase the fraction of saturated fatty acids in the membrane lipids 13 increase the fraction of unsaturated fatty acids in the membrane lipids 63 This is the best answer. It is sometimes possible to reduce the viscosity of the membrane by adding cholesterol, add cholesterol to the membrane 20 but the action of cholesterol varies with other conditions. replace phosphatidyl choline in the membrane with phosphatidyl ethanolamine. 2
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Online quiz 2 - Online Quiz 2: Results. (correct answers...

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