Question

1. what is the function of the cell membrane?

provides support and aids in cellular movement
controls what goes into and out of a cell; maintains homeostasis
site of protein synthesis (makes proteins)
jelly - like substance that suspends organelles and

Explanation:

The cell membrane's function is to regulate the passage of substances (like nutrients, waste) in and out of the cell, helping maintain homeostasis. The first option is for structures like the cytoskeleton, the third is ribosomes, and the fourth is cytoplasm. So the correct option is the one about controlling entry/exit and homeostasis.

Answer:

The correct option is: controls what goes into and out of a cell; maintains homeostasis