7. Winter is here. I hope you have enough of the right fatty acids on your phosp

Question

7. Winter is here. I hope you have enough of the right fatty acids on your phospholipids to maintain membrane fluidity. What does a cell do to its membrane phospholipids to maintain fluidity in cold temperatures?                                                                                                                                                                                                                                                               

41. Two ways to alter the fluidity of a cell membrane are to..

            1.                                                                     2.                                                                    

Explanation / Answer

Cell membrane consists of.

1. Phaspholipids

2. Proteins

3. Carbohydrate and cholesterol.

1- phaspholipids and cholesterol both play important role in the fluidicity of cell membrane with the variation of temperature.

PHASPHOLIPIDS may be 1. Saturated or 2. Unsaturate

Saturated fats or fatty acid compressed at low temperature and make the membrane rigid. While unsaturated fats compress in winter and develops folding or kinks. These kinks are responsible for flexibility because they have vacant space.

With the change of the composition of saturated and unsaturated fat in summer and winter organism maintain fluidicity.

2_ role of cholesterol.

Cholesterol dampen the effect of temperature and regulates the temperature of membrane to maintain the fluidicity of membrane. Cholesterol act as buffer for Temp. Change

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