Why is it important that doctors perform plasma donations in "sterile environments"?

A. To decrease spread of bloodborne pathogens

B. To decrease lethality from needle shock

C. To decrease clotting resulting from dirty machinery

D. To decrease plasmapheresis of the blood

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

paper covers rock.

explanation:

rock only smashes scissors.