Answer :
The substance that makes pancreatic juice alkaline is bicarbonate. Bicarbonate ions are secreted by the pancreas into the pancreatic juice, which helps to neutralize the acidic chyme coming from the stomach.
This is important because the enzymes in the pancreatic juice work best in an alkaline environment.
When food enters the small intestine, it is mixed with pancreatic juice to aid in digestion. The pancreatic juice contains digestive enzymes such as amylase, lipase, and proteases, which break down carbohydrates, fats, and proteins respectively. However, these enzymes work optimally at a pH that is slightly alkaline.
The bicarbonate ions released by the pancreas into the pancreatic juice help raise the pH and make it alkaline. Bicarbonate is a base, which means it can neutralize acids. By neutralizing the acidic chyme from the stomach, the bicarbonate ions create an environment in which the pancreatic enzymes can function efficiently.
In summary, bicarbonate is the substance that makes pancreatic juice alkaline. Its presence helps to create an optimal pH for the action of digestive enzymes in the small intestine.
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