According to the fluid mosaic model, the plasma membrane is composed of which of the following?:
Correct answer: D. All of these
- A. Phospholipids
- B. Extrinsic proteins
- C. Intrinsic proteins
- D. All of these
Explanation
Plasma membrane separates the internal and external environment of a cell. It is composed of phospholipids with hydrophilic heads towards the outer surface and hydrophobic tails facing each other. It contains both intrinsic and extrinsic proteins.
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About Animal and Plant Cell
Animal and plant cells share a plasma membrane, cytoplasm, nucleus, ribosomes, mitochondria and endoplasmic reticulum, but plant cells also have a cellulose cell wall, chloroplasts and a large permanent vacuole. Questions cover organelle structure and function, differences between the two cell types, and how membranes control movement of substances.
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