Is it a b or C or D I need to know please

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from

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