What two human systems work together to provide body cells with a constant supply of oxygen while removing carbon dioxide waste products? a: Nervous and endocrine
b: muscular and skeletal
c: respitory and circulatory
d: excretory snd integumentary

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