Which of the following converts starch into maltose?

1. amylase

2. lipase

3. bile

4. HCl

The correct option is A

amylase

The correct option is A.

Explanation of the correct option:

• Starch is the polysaccharide carbohydrate molecule present in the food that is digested in the mouth. It is converted into the disaccharide unit maltose.
• The enzyme responsible for starch digestion is salivary amylase released into the mouth cavity with saliva from the salivary gland.

Explanation of the incorrect options:

Option B:

• Lipase enzyme does not digest starch. Instead, it digests fats present in the food.

Option C:

• The bile helps in breaking fatty substances, not starch.

Option D:

• Hydrochloric acid or HCl creates the acidic conditions in the stomach for breaking down protein molecules, not starch.

Therefore, the production of maltose from the starch occurs by amylase activity.