Question

1. the passage of substances into and out of a cell takes place through the ______.

proteins endoplasmic reticulum cell wall
size life processes cell membrane
chlorophyll nucleus energy
cells chloroplasts shape
your answer
2 points

Explanation:

To solve this, we recall the function of cell structures. The cell membrane (plasma membrane) is selectively permeable, controlling the entry and exit of substances into and out of the cell. Other options: proteins are components, endoplasmic reticulum is for synthesis/transport, cell wall (in plants) is rigid and not for substance passage regulation, size/shape/energy/chlorophyll/chloroplasts/nucleus/cells/life processes don't relate to substance passage in this context.

Answer:

cell membrane