THE CELL
TRANSPORT INTO AND OUT OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What are the main components of the cell membrane?
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DNA, transport proteins, sugar
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Carbohydrates, phospholipids, water
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Phospholipids, transport proteins, cholesterol
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Proteins, water, DNA
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Explanation:
Detailed explanation-1: -The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins. A phospholipid is a lipid made of glycerol, two fatty acid tails, and a phosphate-linked head group.
Detailed explanation-2: -Phospholipids (PL) are a group of polar lipids that consist of two fatty acids, a glycerol unit and a phosphate group which is esterified to an organic molecule (X) such as choline, ethanolamine, inositol, etc.
Detailed explanation-3: -Cholesterol is the major sterol component of animal cell membranes, which makes up about 30% of the lipid bilayer on average.
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