Question

carbon dioxide is a waste product of your cells metabolism. you exhale carbon dioxide from your lungs. carbon dioxide moves from your cells to your lungs through your blood, which it enters by diffusion. which statement best describes how carbon dioxide enters your blood? a carbon dioxide moves from a higher concentration in your cells to the lower concentration in your bloodstream. b carbon dioxide moves from a lower concentration in your cells to the higher concentration in your bloodstream. c carbon dioxide moves from a higher concentration in your lungs to the lower concentration in your bloodstream. d carbon dioxide moves from a lower concentration in your lungs to the higher concentration in your bloodstream.

Explanation:

Diffusion is the movement of a substance from an area of higher concentration to an area of lower concentration. Carbon - dioxide is a waste product of cell metabolism, so its concentration is higher in cells. It moves into the blood (where its concentration is lower) by diffusion.

Answer:

A. Carbon dioxide moves from a higher concentration in your cells to the lower concentration in your bloodstream.