What is the role of the cell membrane?
to control the functions of the cell
to provide a firm structure for the cell
to control what enters and leaves the rell

The cell membrane is the border control and decides what particle can enter and exit the cell.

Explanation:

to control what enters and leaves the cell

Explanation:

it enhances antibody production by t cells of the adaptive immune system.

hope i'm right

explanation:

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.