Question

what is the function of the plasma membrane in a cell?
replication of genetic material within the cell
generation of energy within the cell
regulation of substances into and out of the cell
production of the proteins used by the cell as building blocks

Explanation:

The plasma membrane is a selectively - permeable barrier. It controls the movement of substances like ions, nutrients, and waste products between the cell's interior and the external environment. Genetic material replication occurs in the nucleus (for eukaryotes), energy generation is mainly in mitochondria, and protein production occurs in ribosomes.

Answer:

regulation of substances into and out of the cell