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प्रश्न
How does tooth enamel get corroded? What is the preventive measure for this?
उत्तर
When the pH of our mouth falls below 5.5, tooth enamel suffers. This happens because the bacteria in our mouth converts sugar and food particles into acids, which corrode our teeth. To treat this, we should brush our teeth after eating using toothpaste that is basic in nature and will neutralise the effect, maintaining our teeth fit and fine.
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संबंधित प्रश्न
What is the function of digestive enzymes?
What is trypsin? What is its function?
What causes movement of food inside the alimentary canal?
Which of the following component of our food is digested by an enzyme which is present in saliva as well as in pancreatic juice?
(a) proteins
(b) fat
(c) minerals
(d) carbohydrate
The first enzyme to mix with food in the digestive tract is:
(a) pepsin
(b) cellulose
(c) amylase
(d) trypsin
Study the diagram given below and then answer the question that follows:
Describe the structure of the part labelled '3'.
Write true or false for the below statement. Rewrite the false statements correctly
Pancreatic juice does not contain any enzyme.
The question has four options. Choose the correct answer:
Uvula can close the opening of
Observe the diagram of Human digestive system.
Match the labeling referred in column I and correlate with the function in column II.
| Column I | Column II | |
| i. | a. | The length of this depends on food the organism eats. |
| ii. | b. | Initial phase of starch digestion |
| iii. | c. | Increase the efficiency of lipase enzyme action |
| iv. | d. | This is the site of the complete digestion of carbohydrates, proteins and fats. |
List the parts of the digestive system.
