The figure below illustrates body size and diffusion time.
Which of the following examples represents the quickest diffusion time?
A)Small insect; insects have high metabolisms, thus diffusion occurs quickly.
B)Giraffe; tall animals generate a lot of heat energy, which allows diffusion to occur quickly.
C)Cell; it has the shortest distance across. Diffusion slows over longer distances.
D)Human; omnivores have more complex metabolic chemistry, which requires higher diffusion rates.

Question

The figure below illustrates body size and diffusion time. 
Which of the following examples represents the quickest diffusion time?
A)Small insect; insects have high metabolisms, thus diffusion occurs quickly. 
B)Giraffe; tall animals generate a lot of heat energy, which allows diffusion to occur quickly. 
C)Cell; it has the shortest distance across. Diffusion slows over longer distances. 
D)Human; omnivores have more complex metabolic chemistry, which requires higher diffusion rates.

Quizplus · Accepted Answer

The figure shows that diffusion time decreases as distance across decreases. Cells have a very short distance across, so diffusion occurs quickly. The other options are not supported by the figure or are based on incorrect assumptions.

The Figure Below Illustrates Body Size and Diffusion Time