Becker's World of the Cell 9th Edition by Lewis Kleinsmith, Jeff Hardin, Gregory Paul Bertoni

Exercise 7

Temperature and Membrane Composition. Which of the following responses are not likely to be seen when a bacterial culture growing at 37°C is transferred to a culture room maintained at 25°C Explain your reasoning.
(a)Initial decrease in membrane fluidity
(b)Gradual replacement of shorter-chain fatty acids by longer-chain fatty acids in the membrane phospholipids
(c)Gradual replacement of stearate by oleate in the membrane phospholipids
(d)Enhanced rate of synthesis of unsaturated fatty acids
(e)Incorporation of more cholesterol into the membrane