Advertisements
Advertisements
प्रश्न
What are the main characteristics of enzyme?
Advertisements
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 the function of digestive enzymes?
Fat is completely digested in the ______.
Name any four life processes in living things.
Which of the organs perform the following functions in humans Absorption of water?
What substances are contained in gastric juice? What are their functions?
What is trypsin? What is its function?
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.
(a) What is W known as?
(b) What is (i) X, and (ii) Y?
(c) What are organisms Z?
(d) State one way of removing layer W from the teeth.
Write four sequential steps of the procedure of the experiment "Preparing a temporary mount of a leaf peel to show stomata".
Put a tick (✓) against the most appropriate alternative in the following statement.
Saliva converts starch into:
Write True or False in the following statement
Molars help in cutting and tearing food.
Name the three enzymes found in pancreatic juice.
(i)____ (ii)____ (iii)_____
State the four ways in which saliva is useful to us.
Write true or false for the below statement. Rewrite the false statements correctly.
All the absorbed nutrients are immediately required by the body.
Answer in detail.
What happens to the nutrients absorbed in the bloodstream from the small intestine?
Define with examples: Herbivores
Describe the digestion of starch.
In the given histology of the alimentary canal, identify i, ii, and iii.
In which part of the alimentary canal food is finally digested?
List the glands associated with digestion.
In human beings, when the process of digestion is completed, the (i) proteins, (ii) carbohydrates and (iii) fats are respectively finally converted into ______.
