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प्रश्न
Differentiate between
Digestion and Absorption
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उत्तर
Digestion:
1. It is the process of converting complex food into a simple absorbable form.
2. It is a series of mechanical and chemical reactions.
3. Many enzymes are associated with digestion.
Absorption :
1. It is the process of passing digested food through thin walls of blood capillaries and enters the bloodstream.
2. No mechanical or chemical reaction occurs in absorption. 3. No enzyme is associated with absorption.
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संबंधित प्रश्न
The length of small intestine in a human adult is about:
(a) 4.5 m
(b) 1.5 m
(c) 3.5 m
(d) 6.5 m
When a person puts food in his mouth, then teeth cut it into small pieces, chew and grind it. The glands A in the mouth secrete a substance B which is mixed with the food by tongue. The substance B contains an enzyme C which starts the digestion of food in the mouth. The slightly digested food from the mouth goes down a tube D. The special type of movements E in the walls of tube D push the food into stomach for further digestion. The stomach wall secretes gastric juice containing three substance F, G and H. One of the functions of F is to kill bacteria which may enter the stomach with food. The substance G protects the inside layer of stomach from the damaging effect of substance F whereas substance H is and enzyme for digestion. The partially digested food then enters into small intestine for further digestion.
(a) What is (i) gland A (ii) substance B, and (iii) enzyme C?
(b) Name the tube D.
(c) What is the movement E known as?
(d) What are (i) F (ii) G, and (iii) H?
Define the term nutrition.
Write true or false for the below statement. Rewrite the false statements correctly.
Saliva contains lipase which digests carbohydrates
Complete the following enzymatic reaction.
Maltose \[\ce{->[maltase]}\] ___________
The pyloric sphincter guards the passage between the ____________.
Identify the correct human dental formula.
Match the two columns and select correct option.
| Column - I | Column - II | ||
| i. | Sphincter of Oddi | a. | Oesophagus and stomach |
| ii. |
Ileo-caecal sphincter |
b. | Stomach and small intestine |
| iii. | Pyloric sphincter | c | Ileum and caecum |
| iv. |
Gastro-oesophageal sphincter |
d. | Opening of hepato- pancreatic duct |
______ is a major organ for the digestion of food materials.
Following statements describe animal nutrition. Read the statement and give one word for the statement. Write the terms that describe process.
Breaking of complex food substances into simpler and soluble substances.
