Why is it colder near the 2 poles

In the context of the neural impulse, which of the following is true about the depolarization of neuron membranes?

What occupation did muhammad have before the first revelation

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