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प्रश्न
Why are the cells generally of a small size?
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
If the organisation of a cell is destroyed due to some physical or chemical influence, what will happen?
Where are proteins synthesized inside the cell?
Draw a well labelled diagram of animal cell and mention one function of the main cell organelles.
Who am I?
I am single layered, but maintain cellular osmotic pressure.
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 |
What is the difference between an organ and an organelle?
State the major function of the following :
Lysosomes
Briefly describe the three essential basic parts of a cell
State the difference between Nucleus and nucleolus
Identify the cellular structure with the help of the following clue:
It is made up of DNA threads.
