Secondary active transport
A)utilizes energy directly.
B)often utilizes symport proteins.
C)always uses the influx of sodium ions.
D)is only important in the kidney.

Question

Quizplus · Accepted Answer

Secondary active transport relies on the electrochemical gradient of one ion to transport another ion or molecule against its electrochemical gradient. This process often involves symport proteins, which move two or more ions or molecules in the same direction across the membrane. However, it does not always require the influx of sodium ions and can occur in various cell types, not just in the kidney. It does not utilize energy directly but relies on the energy stored in the electrochemical gradient of the driving ion.

Secondary Active Transport