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प्रश्न
Name the digestive juice secreted by the stomach and give its function.
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उत्तर
The digestive juice secreted by the stomach is the gastric juice.
The gastric juice contains
- — water
- — hydrochloric acid
- — enzyme
Which have the following roles:
- Hydrochloric acid serves to kill the germs and activates pepsin. Pepsin converts proteins into peptones and proteoses.
- Enzyme rennin converts the milk casein into curd.
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संबंधित प्रश्न
| If the teeth are not cleaned regularly, they become covered with a sticky yellowish layer W of food particles and bacteria. Since layer W covers the teeth, the alkaline liquid X secreted by glands Y inside the mouth cannot reach the teeth surface to neutralise the acid formed by the action of organisms Z on sugary food, and hence tooth decay sets in. |
- What is W known as?
- What are (i) X and (ii) Y?
- What are organisms Z?
- State one way of removing layer W from the teeth.
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