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Question
Give functions.
Lysosome
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.
RELATED QUESTIONS
Why is the cell called the structural and functional unit of life?
Which of the following cell organelles is correctly matched with its function?
Match the item in column 'A' with those in column 'B'.
| Column A | Column B |
| (a) Vacuoles | (i) Intracellular digestion |
| (b) Nucleolus | (ii) Respiratory enzymes |
| (c) Lysosomes | (iii) Covered by tonoplast |
| (d) Anthocyanin | (iv) Dissolved in the cytoplasm |
| (e) Cristae | (v) Forms RNA |
Fill in the blanks :
Very thin flexible, a living membrane which is differentially permeable, is called__________.
Fill in the blanks :
__________ is a plastid which stores starch.
Distinguish between the following pairs of terms :
Plant cell and animal cell
Fill in the blanks:
______ membrane is a selectively permeable membrane.
Identify the cellular structure with the help of the following clue:
It synthesizes the respiratory enzymes.
Identify the cellular structure with the help of the following clue:
It consists of cisternae, vesicles and vacuoles.
Identify the cellular structure with the help of the following clue:
It initiates and regulates cell division.
