Question

a plant cell maintains its rigid structure due to the presence of a cell wall. what is the primary function of the cell membrane in both plant and animal cells that complements this?
synthesizing atp for energy.
regulating the movement of substances into and out of the cell.
storing water and nutrients.
providing a site for photosynthesis.
the cytoplasm is often described as the “factory floor” of the cell. which of the following best explains its direct role in cellular processes?
it generates the energy required for cellular work.
it synthesizes all the proteins needed by the cell.
it provides the genetic instructions for all cellular activities.
it serves as the medium in which many metabolic reactions occur and organelles are suspended.

Explanation:

The cell - membrane is a selectively permeable barrier. Its main function is to regulate the movement of substances in and out of the cell. The cytoplasm is the jelly - like substance within the cell where many metabolic reactions occur and organelles are suspended.

Answer:

1. B. Regulating the movement of substances into and out of the cell.
2. D. It serves as the medium in which many metabolic reactions occur and organelles are suspended.