Question

Surface area and volume are important considerations for an animal because:

a. As an animal increases in size, the volume of nutrients needed decreases
b. As an animal increases in size, the volume of nutrients needed increases
c. As surface area increases, movement of substances across the cell membrane by diffusion increases
d. As surface area increases, movement of substances across the cell membrane by diffusion decreases

Answer 1

The surface area and volume are important considerations for animals because as an animal increases in size, the volume of nutrients needed increases. As surface area increases, the movement of substances across the cell membrane by diffusion increases. The correct answer is option c.

Step-by-step explanation:

The surface area and volume are important considerations for animals because as an animal increases in size, the volume of nutrients needed increases, not decreases.

Nutrients and waste are exchanged at the periphery of the cell, and a larger cell with a larger volume will not have enough surface area to meet its needs for diffusion. As surface area increases, the movement of substances across the cell membrane by diffusion increases. Therefore, the correct answer is option c.