Question

Cells a and b are the same size, shape, and temperature, but cell a is metabolically less active than cell

Answer 1

The answer is: B; the diffusion gradient in cell B is steeper

Cell B actively converting oxygen to water in cellular respiration, therefore the oxygen concentration would be much less when compared to oxygen concentration of cell A.

Diffusion will allow molecule to move from container with higher concentration to container with lower concentration. The difference in concentration will increase the speed, so the speed of oxygen diffusion to cell B would be faster.