Question

1. the passage explains that the cell membrane isselectively permeable. what does this mean? the membrane allows only certain substances to enter or leave the cell the membrane lets all materials move freely in and out of the cell the membrane completely blocks water and glucose from passing through the membrane changes shape to move the entire cell around

Explanation:

Selective permeability means that the cell - membrane has the property of allowing only certain substances to cross it, controlling the entry and exit of materials based on the cell's needs.

Answer:

The membrane allows only certain substances to enter or leave the cell