Carrier proteins have the ability to change shape and physically move molecules across the cell membrane. True or false

True

Explanation:

Carrier proteins are the proteins which can help move some substance down their concentration gradient and they can do that by changing their shape while transporting substances across cell membranes. They are responsible for active transport of materials into or out of the cells.

the answer is a or when it says crossing over

gold i'm pretty sure i might be wrong