Which proteins are correctly identified? A cytoskeletal elements are movement proteins.
B Antibodies are defense proteins.
CHemoglobin is a transport protein.
D Muscle fibers are structural proteins.
Hormones are regulations of cell function proteins.
Hair is a movement protein.

Contrast how pollination is different among gymnosperms and angiosperms.

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

What changes the stability of the element