Question

1. in a cell, what is the function of the cell membrane?

a. it removes waste and allows important food.
b. it contains the body and cell of substances.
c. it only maintains the cell shape.
d. it generates energy for the cell.

Explanation:

The cell - membrane controls the entry and exit of substances. It is a selectively permeable barrier. Option A is incorrect as it is not mainly about removing waste and debris. Option C is wrong as the cell - membrane doesn't create the cell. Option D is incorrect as it doesn't generate energy for the cell (that's the function of mitochondria).

Answer:

B. It controls the entry and exit of substances.