Answer :
The role of bicarbonate ions in pancreatic juice is to neutralize the acidic chyme from the stomach, creating an alkaline environment for the pancreatic enzymes to function effectively.
The role of bicarbonate ions in pancreatic juice is to neutralize the acidic chyme that enters the small intestine from the stomach. The stomach secretes hydrochloric acid, which is highly acidic and necessary for the initial breakdown of food. However, the enzymes in pancreatic juice work optimally at a slightly alkaline pH. Therefore, when the chyme enters the small intestine, the bicarbonate ions in pancreatic juice react with the hydrochloric acid, neutralizing it and raising the pH level.
This neutralization is important because it creates a favorable environment for the pancreatic enzymes to function effectively and efficiently. The enzymes in pancreatic juice, such as amylase, lipase, and proteases, are responsible for breaking down carbohydrates, fats, and proteins, respectively. These enzymes work best at a slightly alkaline pH, and the bicarbonate ions help maintain this pH balance.
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