Which of the following is a characteristic feature of a carrier protein in a plasma membrane? a. It is a peripheral membrane protein.
b. It exhibits a specificity for a particular type of molecule.
c. It requires the expenditure of cellular energy to function.
d. It works against diffusion.
e. It has few, if any, hydrophobic amino acids.

White-tailed deer are considered to be an overpopulated species in the central united states. which of these events probably contributed the most to white-tailed deer exceeding their carrying capacity?

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

Which is the correct formula for photosynthesis