Hurry (will mark brainliest)
which is a function of the cell membrane?
performs photosynthesis
controls what enters and leaves the cell
protects the external structures of the cell
provides energy to the cell
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protects the external structures of the cell  :)

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation:

ability to mate mark me brainliest