SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They make proteins
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They cause DNA to replicate
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They are the main structual componet of membranes
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They produce energy for the cell
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Detailed explanation-1: -Membrane lipids, mainly phospholipids (PLs; also known as glycerophospholipids), consist of the lipid bilayer that acts as barriers between the cell and environment, and between different cellular compartments.
Detailed explanation-2: -Four major phospholipids predominate in the plasma membrane of many mammalian cells: phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, and sphingomyelin.
Detailed explanation-3: -Phospholipid bilayers are critical components of cell membranes. The lipid bilayer acts as a barrier to the passage of molecules and ions into and out of the cell. However, an important function of the cell membrane is to allow selective passage of certain substances into and out of cells.