Advertisements
Advertisements
प्रश्न
What are the main characteristics of enzyme?
उत्तर
The enzyme is a protein. The main material of an enzyme is protein
- It is easily influenced, by environmental change. Environmental factors include temperature, pH, and inhibitor.
- It acts as catalyst The enzyme functions in accelerating chemical reaction, but the enzyme itself does not change after the reaction ends.
- It functions specifically. The enzyme only catalyzes one kind of substrate and cannot function for many substrates. The term is called one enzyme one substrate.
- It functions in reverse. It means the enzyme does not determine the direction of reaction, but it only functions in accelerating reaction rate until it reaches equilibrium. The enzyme also functions in substance synthesis and substance breaking down reaction.
- It is required, in small amount. A small amount of enzyme is able to catalyze a chemical reaction.
APPEARS IN
संबंधित प्रश्न
What is trypsin? What is its function?
In human digestive system, the enzymes pepsin and trypsin are secreted respectively by:
(a) pancreas and liver
(b) stomach and salivary glands
(c) pancreas and gall bladder
(d) stomach and pancreas
Put a tick (✓) against the most appropriate alternative in the following statement.
The teeth which help in tearing the food are the:
Fill in the blank.
Saliva contains salivary amylase which changes starch to _____.
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 |
Correct the spellings: Caceum
Who is telling a lie?
Appendix: Digestion is impossible without me.
The contraction and expansion movement of the walls of the food pipe is called ____________.
Liver transports nutrients, oxygen, wastes, and hormones.
Describe the alimentary canal of man.