Question

why are groups of small cells better than one large cell at moving material in and out?
a. they have a greater surface - to - volume ratio.
b. they have a smaller volume.
c. they have a lower surface - to - volume ratio.
d. they have more cell structures.

Explanation:

The surface - to - volume ratio is crucial for material movement. Small cells have a greater surface - to - volume ratio compared to one large cell. This allows for more efficient exchange of materials across the cell membrane.

Answer:

A. They have a greater surface - to - volume ratio.