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Question- Two different species of bacteria have been isolated from very disparate environments: one, a hot spring with an average water temperature of 40 C, the other a glacial lake with an average temperature of -4 C. Choose a total of three answers from the selections below. (One each for each of the questions A, B and C)

1) Which of the two bacterial species would be expected to have more unsaturated fatty acids in its membrane lipids?

2) Which would have longer-chain fatty acids?

3) At 27 C, which species would have a more fluid membrane?

Answer all 3 (Bacterium A 40 C...Bacterium B 4C)

State your answer by means of three significant figures.

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