Q 5.5: Which of these components contribute to the fluidity of the plasma membrane?
1. phospholipids
II. cholesterol
III. proteins
IV. nucleic acids

              II) cholesterol

Explanation:

                      Cholesterol is the component on which the plasma membrane stability depends. Cholesterol is  a steroid with  benzene rings 27 number of carbon atoms and have 3 benzene ring and a 5 carbon ring.Cholesterol is waxy fat like substance found in the cell membrane of all the cell and helps to maintain the fluidity of the cell membrane.The formula for cholesterol is C27H46O. Cholesterol is needed to make hormones and vitamin d in your body.

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.

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