The blood travel to your liver before transporting nutrients to other parts of your body in order to filter out substances that are not needed for the body. The liver <span>regulates the composition of blood, including the amounts of sugar (glucose), protein, and fat that enter the bloodstream. It removes bilirubin, ammonia, and other toxins from the blood. </span>
The correct answer is carboxyl group.
<span>The carboxyl group is an organic functional group consisting of a carbon atom double bonded to an oxygen atom and single bonded to a hydroxyl group (COOH). It is the main functional group of carboxylic acid. Carboxylic acids are found in acetic acid and the amino acids that are used to build proteins.</span>
