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प्रश्न
Answer in detail.
What is meant by digestion? How does it differ from nutrition?
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उत्तर
The process of changing complex food into simple, absorbable form by the action of certain enzymes is called digestion. Many organs are associated with digestion. Digestion is of two types
1) Mechanical digestion
In mechanical digestion, food is broken down in the mouth when we chew it with our teeth.
2) Chemical digestion.
In chemical digestion, the food is digested by the actions of certain enzymes.
Digestion is necessary because the food which is obtained is in complex form and our body is not able to absorb nutrients from it. So it is converted into a simple absorbable form. Nutrition is the process of obtaining and using food by the organisms. It is different in different organisms. Ingestion, digestion, absorption, Assimilation, and egestion are the various steps involved in nutrition.
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संबंधित प्रश्न
The largest gland in the human body is ______.
What is the role of hydrochloric acid in our stomach?
Write the function of the following in the human alimentary canal:
Villi
Name the types of teeth seen in humans.
Define the following term:
assimilation
Write true or false for the below statement. Rewrite the false statements correctly.
The pancreas secretes bile juice
Match items in column A with the appropriate items in Column B:
| Column A | Column B | ||
| 1 | HCl | a | Lactose |
| 2 | Rennin | b | Pellagra |
| 3 | Enteropeptidase | c | Rumen |
| 4 | Cellulose | d | Pepsin |
| 5 | Ptyalin | e | Starch |
| 6 | Vitamin | f | Pernicious anaemia |
| 7 | Intestinal juice | g | Trypsin |
| 8 | Bile salt | h | Casein |
| 9 | Vitamin A | i | Micelle |
| 10 | Goitre | j | Night-blindness |
| k | Iodine | ||
Identify the INCORRECT statement.
The contraction and expansion movement of the walls of the food pipe is called ____________.
Liver produces for ______ the digestion of fat.
