Question

what is the main function of the cell membrane in an animal cell? to break down sugar and release energy that the cell can use to control which substances enter and leave the cell to pull replicated chromosomes apart during cell division to make proteins

Explanation:

The cell - membrane is a selectively permeable barrier. It regulates the movement of substances in and out of the cell, maintaining the cell's internal environment. Breaking down sugar for energy is done by mitochondria, pulling replicated chromosomes apart is a function of the spindle fibers during cell division, and making proteins is the job of ribosomes.

Answer:

to control which substances enter and leave the cell