SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A protein, lipid and cellulose layer
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Biomolecular lipid layer surrounded by protein layers
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A layer of proteins between two lipid layer
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A layer of lipid between two protein layer
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Detailed explanation-1: -Plasma membrane is composed of bimolecular lipid layer which is surrounded by a protein layer. It regulates the transport of materials entering and exiting the cells.
Detailed explanation-2: -The plasma membrane is composed mainly of phospholipids, which consist of fatty acids and alcohol. The phospholipids in the plasma membrane are arranged in two layers, called a phospholipid bilayer, with a hydrophobic, or water-hating, interior and a hydrophilic, or water-loving, exterior.
Detailed explanation-3: -Plasma membrane comprises of bimolecular lipid layer surrounded by protein layers. (option d) The plasma membrane is a flexible outermost covering of animal cells and the second covering after cell wall in plant cells and prokaryotes.
Detailed explanation-4: -Membrane Lipids Are Amphipathic Molecules, Most of which Spontaneously Form Bilayers. The Lipid Bilayer Is a Two-dimensional Fluid. The Fluidity of a Lipid Bilayer Depends on Its Composition. The Plasma Membrane Contains Lipid Rafts That Are Enriched in Sphingolipids, Cholesterol, and Some Membrane Proteins.
Detailed explanation-5: -The plasma membrane is composed mainly of phospholipids. They are arranged in two layers, called the phospholipid bilayer. Each phospholipid molecule has a head and two tails. The head “loves” water (hydrophilic) and the tails “hates” water (hydrophobic).