Look at the cell diagram. Which letter indicates a cell structure that directly controls the movement of molecules into and out of the cell?
Structure A

Structure B

Structure C

Structure D

I don't see any picture, but the definition of that term would be a cell membrane. It is the outer lining of a cell.

Explanation:

humidity time of day age of bread type of bread shape of bread height of observer type of shelf surface type of storage container.

Explanation:

Choose the four variables that are most important to control in an experiment about the rate at which bread turns moldy. humidity time of day age of bread type of bread shape of bread height of observer type of shelf surface type of storage container.