Would all the protein you eat be digested by the time it leaves the stomach?

No, not all the protein you eat is fully digested by the time it leaves the stomach. The stomach primarily breaks down proteins into smaller peptides through the action of stomach acids and the enzyme pepsin. However, complete digestion occurs mainly in the small intestine, where enzymes from the pancreas and the intestinal lining further break down these peptides into amino acids for absorption. Thus, significant protein digestion continues beyond the stomach.