A person suffering from Parkinson’s disease is thought to have problems with

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that

Cells control gene expression at which steps

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