Question
Write short notes on:
Enzymes
Enzymes
✓
Answer
Enzymes are substances secreted in the body an organism which bring about specific chemical reactions.
- Metabolic processes are impossible without enzymes.
- Digestive exzymes of the digestive system bring about changes in the find material.
- They break down the food into simple form.
- They are a type of protein.
- Saliva contain pytalin which converts starch into maltose.
- Trypsin: Convert proteins into amino acids.
- Lipase: Convert fats into fatty acid.
- Amylase: Converts complex carbohydrates into simple sugar.
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| Column ‘A’ | Column B’ |
| 1. Cardiac muscle | a. Always functions in pairs |
| 2. Are brought about by muscle | b. We never feel tired |
| 3. Pepsin | c. Uncontrolled and painful contraction of muscles |
| 4. Cramps | d. Chewing movement of the jaw |
| 5. Skeletal muscles | e. Enzymes of the gastric juice |
Arc the plants and animals from Kashmir and Rajasthan of the same type? Can you elaborate on any differences between the two?
Draw neat labelled diagrams of:
Conduction of heat
Conduction of heat
Draw neat labelled diagrams of:
Thermos flask
Thermos flask
What are the similarities and differences between.
Onion and Coriander
Onion and Coriander
Write short note on:
Functions of metal detector.
Functions of metal detector.
What is the difference between us:
Prokaryotic cell and Eukaryotic cell
Prokaryotic cell and Eukaryotic cell
Which changes shown in the pictures below are temporary.
1.
1.
2.Which of the changes are permanent?
3.In which did the original matter undergo a change?
4.In which the original matter remain unchanged?
5.In which of the changes was a new substance with a new property formed?
Observe the diagram and answer the given questions below it.
1.Label parts 1 – 4
2.What is the principle of this object?
3.State the uses of the given object.
4.What is an infrared camera?
5.What is thermoware?
Observe the diagram and answer the given questions below it.
1.What is the diagram about?
2.Does the same thing happen in liquids and gases?
3.Give one example of this property in everyday life.