_ regulates the selective permeability of the plasma membrane, allowing movement of molecules according to the needs of the cells.
Correct answer: A. Membrane proteins
- A. Membrane proteins
- B. Membrane carbohydrates
- C. Membrane glycolipids
- D. Membrane cholesterol
Explanation
Membrane proteins regulate the selective permeability of the plasma membrane, allowing the movement of molecules according to the needs of the cell. These proteins can act as:- Channels: allowing certain molecules to pass through the membrane- Transporters: actively moving molecules across the membrane- Receptors: recognizing and binding to specific molecules, triggering responses- Enzymes: catalyzing reactions within the membraneMembrane proteins control the flow of molecules across the membrane, ensuring that the cell maintains homeostasis and regulates the exchange of nutrients, waste products, and signaling molecules.
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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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