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Greater degree of unsaturation in fatty acids of cell membrane _________

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Greater degree of unsaturation in fatty acids of cell membrane _________

(a) Lowers the transition temperature

(b) Raises the transition temperature

(c) Has no effect on transition temperature

(d) Doubles the transition temperature

This question was posed to me in my homework.

My question is based upon Cellular Membranes in division Cellular Membranes of Cell Biology

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Correct choice is (a) Lowers the transition temperature

Explanation: The lipid is converted from a liquid crystalline phase to a frozen crystalline phase. The temperature at which this change occurs is called transition temperature. The greater degree of unsaturation in fatty acids lower the transition temperature and it quickly achieves the crystalline frozen state due to high unsaturation.

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