search
arrow-left Previous
Next arrow-right
Q: Germs entering the body through food are mainly killed in the region of alimentary canal where pH may reach the level _________.
  • A. 2
  • B. 7
  • C. 14
  • D.
Correct Answer: Option A - As food enters the body (alimentary canal) salivary glands secretes saliva which is acidic in nature with pH 6-7. Saliva contain saccharide enzyme which kills bacteria. Gastric juice is secreted by stomach which pH is almost 1.5 to 1.8. It kills bacteria and protects food from getting spoil.
A. As food enters the body (alimentary canal) salivary glands secretes saliva which is acidic in nature with pH 6-7. Saliva contain saccharide enzyme which kills bacteria. Gastric juice is secreted by stomach which pH is almost 1.5 to 1.8. It kills bacteria and protects food from getting spoil.

Explanations:

As food enters the body (alimentary canal) salivary glands secretes saliva which is acidic in nature with pH 6-7. Saliva contain saccharide enzyme which kills bacteria. Gastric juice is secreted by stomach which pH is almost 1.5 to 1.8. It kills bacteria and protects food from getting spoil.