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प्रश्न
Why are the cells generally of a small size?
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उत्तर
Cells generally remain small in size because:
- To enable different regions of the cell to communicate with each other rapidly for the cell to function effectively
- To have a large surface area is to volume ratio for greater diffusion of substances, in and out of the cell.
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संबंधित प्रश्न
Complete the crossword with the help of clues given below.
Across
1. This is necessary for photosynthesis.
3. Term for component present in the cytoplasm.
6. The living substance in the cell.
8. Units of inheritance present on the chromosomes.
Down
1. Green plastids.
2. Formed by collection of tissues.
4. It separates the contents of the cell from the surrounding medium.
5. Empty structure in the cytoplasm.
7. A group of cells.
Give functions.
Plasma membrane
_________ consists of membranous sacs and secrets 40 types of digestive enzymes.
Distinguish between the following pairs of terms :
Plant cell and animal cell
Name the plastid and pigment likely to be found in the cells of :
State the major function of the following :
Mitochondria:
State the major function of the following :
Cytoplasm:
Write true or false for each statement. Rewrite the false statements correctly:
Vacuoles are filled with a fluid called nucleoplasm
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 contains chromatin fibres.
