A major difference between anaerobic respiration and anaerobic fermentation is A.

C)

Explanation:

that the latter uses organic molecules within the cell as final electron acceptors

B. Controls what enters and leaves the cell.

The cell membrane ( plasma membrane)  surrounds the cell and primarily made up of lipids and proteins. It controls what enters and leaves the cell that is why it is also called as a selectively permeable membrane. It does this by not allowing the useful substances to go out and the harmful substances to enter the cell. In this way, it provides protection to the cell.

Some of the essential cellular processes related to cell membrane are- Cell signaling, endocytosis, exocytosis, cell adhesion etc.