The cell membrane
A.
converts glucose to other energy molecules.
B.
controls which substances enter and exit the cell.
C.
is the site of most cellular chemical reactions.
D.
alters and packages proteins and lipids.

B

Explanation:

A cell membrane acts like a rain coat or a sweater, keeping certain things in and certain things out.

dna damages cause changes in the structure of the genetic material and prevents the replication mechanism from functioning and performing properly. dna damage and mutation have different biological consequences. while most dna damages can undergo dna repair, such repair is not 100% efficient.

"do a testcross with a homozygous recessive plant."