science
Grade-10
Easy
Question
Which of the following difference is correct about membrane carrier protein and membrane channel protein?
- Channel proteins can mediate active transport, whereas carrier proteins cannot mediate active transport.
- Carrier proteins are glycoproteins whereas channel proteins are lipoproteins.
- Carrier proteins can mediate active transport, but channel proteins cannot mediate active transport.
- Carrier proteins are made by free ribosomes, but channel proteins are produced by bound ribosomes.
Hint:
The active transport is mediated by carrier proteins and not by channel proteins.
The correct answer is: Carrier proteins can mediate active transport, but channel proteins cannot mediate active transport.
- The proteins in the cell membrane are carrier proteins and channel proteins.
- The carrier proteins transport the molecules by active transport. Ion exchange is done by carrier protein by passive transport.
- The channel proteins carry molecules across the membrane by passive diffusion.
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