Select all that apply.
carbohydrates
in the body are primarily fats
are primarily sugars and starches
are the most readily available source of energy for organisms
are the largest of the four main biological macromolecules

Cells a and b are the same size and shape, but cell a is metabolically quiet and cell b is actively consuming oxygen. oxygen will diffuse more quickly into cell because . b the oxygen molecules inside cell b have a higher kinetic energy b. a its membrane transport proteins will not be saturated c. a the diffusion gradient there is shallowerd. b the diffusion gradient there is steeper