Which of the following represents a "role" that the liver plays in the body? A- Helps control blood pressure
B- Extracts waste from blood
C- Synthesizes protein from amino acids ingested through
food
D- Removes carbon dioxide (CO2) from the body
E- None of the above

The liver processes this blood and breaks down, balances, and creates the nutrients and also metabolizes drugs into forms that are easier to use for the rest of the body or that are nontoxic. More than 500 vital functions have been identified with the liver.

Explanation:

B

Explanation: it is a organ that extracts waste and other harmful things using bile

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.