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Question
Give functions.
Lysosome
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Solution 1
- Immune system - It destroys viruses and bacteria that attack the cell.
- Demolition squads - It destroys worn-out cellular organelles and organic debris. (Autolysis)
- Suicide Bags - When a cell becomes old or is damaged, lysosomes burst and enzymes digest their own cells.
- During starvation, lysosomes digest stored proteins, fats.
Solution 2
Functions of lysosomes:
- Lysosomes destroy foreign materials that enter the cell.
- Dead and worn-out organelles are removed by lysosomes.
- Cells are autolysed by lysosomes, and their contents are released within the cell.
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Write short note on the following :
(a) Golgi apparatus
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Ribosome
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Cytoplasm:
Fill up the blank with the terms given below
Plastids contain ______.
Write true or false for each statement. Rewrite the false statements correctly:
At the time of cell division the chromatin network changes into small thread-like structures called genes
Write true or false for each statement. Rewrite the false statements correctly:
Ribosomes are the sites of respiration in a cell
Identify the cellular structure with the help of the following clue:
It synthesizes the respiratory enzymes.
Match List I with List II.
| List I | List II |
| A. Axoneme | I. Centriole |
| B. Cartwheel pattern | II. Cilia and flagella |
| C. Crista | III. Chromosome |
| D. Satellite | IV. Mitochondria |
Choose the correct answer from the options given below:
