Which of the following best describes secondary active transport?
A)Secondary active transport involves the movement of a substance into a cell with its concentration gradient.
B)Secondary active transport involves the movement of a substance into a cell through a protein channel with its concentration gradient.
C)Secondary active transport occurs when one substance is coupled with the passive transport of a second substance.
D)Secondary active transport involves the movement of water by osmosis into a cell.

Question

Quizplus · Accepted Answer

Secondary active transport involves the use of energy to transport one substance against its concentration gradient, which is coupled with the transport of another substance down its concentration gradient. This coupling allows the movement of the uphill substance to be powered by the downhill movement of the other substance. This differs from primary active transport, which uses energy directly to transport a substance against its concentration gradient. Options A, B, and D do not accurately describe secondary active transport.

Which of the Following Best Describes Secondary Active Transport