How do the structures of the animal tissues you looked at support the function these tissues have in the body?

the answer is otpion c) understanding

he wants to be heard one more time. he wants to be understood. he needs the truth one more time.

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.