All of the following statements about chemically-gated ion channels are true except?

Question

All of the following statements about chemically-gated ion channels are true except

Possible Answers
A. their amino acid chains wind back and forth across the membrane.
B. they close in response to binding of the signal molecule.
C. a pore exists in the center of the protein.
D. the pore connects the extracellular fluid with the cytoplasm.
E. the pore is big enough for ions to pass through it.

Answer 1

C.

Answer 2

It's B for sure. I just looked it up in my bio book because I have a test today. All the other statements are true. This is what my book says word for word:



"The pore is big enough for ions to pass through, so the protein functions as an ion channel."



"...the chain of amino acids threads back and forth across the plasma membrane several times."



"In the center of the protein is a pore that connects the extracellular fluid with the cytoplasm."

Answer 3

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