Final answer:
Stomach acid aids in protein digestion, destroys bacteria, and is protected by mucus.
Explanation:
Stomach acid plays several crucial roles in digestion and protection:
- Stomach acid helps digest protein by denaturing food proteins and exposing them for enzymatic action.
- It helps destroy bacteria present in foods or beverages to prevent infections.
- Under normal conditions, the stomach is protected by mucus from damage due to gastric juice.
Learn more about Stomach acid and its functions in digestion and protection here:
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