SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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synthesizing new forms of cholesterol
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closing protein channels
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decreasing the number of hydrophobic proteins present
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replacing saturated fatty acids with unsaturated fatty acids
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Detailed explanation-1: -Low Temperature Stiffens the Membrane At low temperature, the fatty acid tails of the phospholipids move less and become more rigid. This decreases the overall fluidity of the membrane, also decreasing its permeability and potentially restricting entry of important molecules such as oxygen and glucose into the cell.
Detailed explanation-2: -The relative fluidity of the membrane is particularly important in a cold environment. A cold environment tends to compress membranes composed largely of saturated fatty acids, making them less fluid and more susceptible to rupturing.
Detailed explanation-3: -Cold Acclimation Winter wheat plants adapt to rapidly decreasing temperatures in late fall or winter by lowering moisture content of the ‘crown’ (the growing point at the base of the shoot), decreasing the accumulation of carbohydrates, and slowing down the overall growth process.