Question

Many times cholesterol is viewed as a molecule that has harmful effects on the health of one's cardiovascular system. Contrary to what many may believe, cholesterol is a very important molecule that serves a vital function within the cell membrane. Cholesterol most important role is in: The maintenance of the structure of the bilayer by increasing membrane permeability. The maintenance of the structure of the bilayer by decreasing membrane permeability. Providing the sole anchor point for membrane proteins The communication with its external environment

Please explain.

Answer 1

Second option is the right answer. The cholesterol helps in decreasing the membrane permeability by fitting into the passage of the molecules through the phospholipids by increasing the packaging of the phospholipids. It accommodates into the spaces between the phospholipid molecules and thus the flow of molecules is restricted as the pathway is hindered.

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