Question

the food bolus becomes this as it is mechanically mixed in the stomach and chemically digested by hydrochloric acid and sent in small batches into the duodenum....
gastrin
pepsin
chyme
bicarbonate

Explanation:

• Gastrin is a hormone that stimulates gastric acid secretion, not the transformed food bolus.
• Pepsin is an enzyme (not the food bolus itself) that helps in protein digestion in the stomach.
• Bicarbonate (e.g., in pancreatic juice) helps neutralize chyme in the small intestine, not the form of the food bolus in the stomach.
• Chyme is the semi - fluid mass of partly digested food that is expelled by the stomach, through the pyloric valve, into the duodenum. It is formed as the food bolus is mechanically mixed (by stomach contractions) and chemically digested (by hydrochloric acid and enzymes like pepsin) in the stomach.

Answer:

C. Chyme