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Naily [24]
3 years ago
14

Which statement would be true of a membrane-bound protein that works in conjunction with a sodium–potassium pump during secondar

y active transport?
a. It will be able to transport an ion in both directions across the cell membrane and a small molecule in one direction.
b. It will block a small molecule from moving across the cell membrane in response to an increase in concentration of an ion in the external environment.
c. It will move a small molecule across the cell membrane in response to a build-up in concentration of the molecule in the external environment.
d. Its conformation will change when both an ion and a small molecule bind to it.
Biology
1 answer:
Rudik [331]3 years ago
3 0

Answer:

The correct answer is option d. "Its conformation will change when both an ion and a small molecule bind to it".

Explanation:

The secondary active transport is a form of active transport at which a ion (typically Na+ or H+)  is transferred down its electrochemical gradient to the uphill movement of another molecule. Secondary active transport takes place by the conjunctive work of membrane-bound proteins and sodium–potassium pumps. During secondary active transport, both of these proteins change its conformation when an ion and a small molecule bind to it. This change in conformation makes possible that the ions and the small molecules pass through the membrane.

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