What functions do proteins perform in the cell membrane? a) they transport some substances through the membrane. b) they use dna coding to make molecules of rna. c) they provide basic structure for the cell membrane. d) they break down macromolecules into their monomer components .

High blood pressure occurs when there is too much blood flowing through the blood vessels at one time. by changing the amount of water in the blood, blood pressure can change. the excretory system can to lower blood pressure.which would most likely occur in the kidney? a)more water would be transferred from the nephron.b)less water would be absorbed into the nephron.c)the amount of water in the bladder would decrease.d)the amount of water in the blood would increase.