The fluid-mosaic model of membrane structure includes the following: A Option A: a lipid bilayer. B Option B: membrane proteins. C Option C: mobile components that can engage in transient or semi permanent interactions. D Option D: all of the choices are correct.

Option D

Explanation:

In 1972, the fluid mosaic model was proposed by S. J. Singer and G. L. Nicolson to describe the structure of the plasma membrane found I living cells. The model describes the plasma membrane to possess components including phospholipid, proteins and cholesterol.

The phospholipid is arranged in two layers comprising of glycerol, two fatty acids and a phosphate group. The fatty acids which forms the tail are hydrophobic (water-fearing) while the phosphate group is water-loving (hydrophobic) giving the plasma membrane an AMPHIPATHIC nature. The other component as proposed by the model are membrane proteins and cholesterol, all responsible for the fluidity of the membrane.

the answer is d. chordata

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