Final answer:
The majority of proteins from a piece of chicken are digested into amino acids and absorbed into the bloodstream, primarily in the small intestine, through active transport mechanisms.
Step-by-step explanation:
The majority of the protein in a piece of chicken that you have eaten, once the digestive process is complete, will be absorbed into the bloodstream. During the process of digestion, proteins are broken down into smaller peptides and amino acids through the action of digestive enzymes such as pepsin in the stomach and trypsin and chymotrypsin from the pancreas. These enzymes are active in the stomach and small intestine, respectively. Once proteins reach the small intestine, particularly in the duodenum and jejunum, they are further broken down into their constituent amino acids. Nearly all (95 to 98 percent) of the protein is digested and absorbed in the small intestine. These amino acids are then transported into the bloodstream via active transport mechanisms that are typically linked to sodium transport. From there, these amino acids can be used throughout the body to build new proteins as needed.