About 30% starch is digested in -

Options

A. Mouth
B. Stomach
C. Small intestine
D. Colon

Answer

**Step-by-Step Solution:**

1. **Understanding Starch**: Starch is a polysaccharide made up of glucose units. It is a complex carbohydrate that needs to be broken down into simpler sugars for digestion.

2. **Digestion of Starch**: The digestion of starch begins in the mouth. Saliva contains an enzyme called salivary amylase, which is responsible for breaking down starch into simpler sugars.

3. **Percentage of Digestion**: Approximately 30% of starch is digested in the mouth due to the action of salivary amylase. This enzyme converts starch (a polysaccharide) into maltose (a disaccharide).

4. **Location of Digestion**: The question specifically asks where this 30% digestion occurs. Since it takes place in the mouth, we can conclude that the answer to the question is the mouth.

5. **Further Digestion**: Although 30% of starch is digested in the mouth, the remaining starch continues to be digested in the stomach and small intestine, where other enzymes further break it down.

**Final Answer**: About 30% starch is digested in the mouth.

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