Chapter 5, Problem 4TYK

A characteristic of carrier molecules in a primary active transport pump is that:

a. they cannot transport a substance and also hydrolyze ATP.

b. they retain their same shape as they perform different roles.

c. their primary role is to move negatively charged ions across membrances.

d. they move Na⁺ into a neural cell and K⁺ out of the same cell.

e. they act to establish an electrochemical gradient.