Which two items are made from photosynthesis but used in respiration as a reactant?

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.

the answer would be..

b. sucking

i believe it would be c: tons.

answer///unconditioned stimulus;