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प्रश्न
Where do the ribosomes get synthesized?
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उत्तर
Ribosomes are composed of RNA (Ribonucleic acid) and proteins. Ribosomes are synthesised in the nucleolus part of the nucleus as nucleolus is rich in RNA and protein molecules. Nucleolus is referred to as factory of ribosomes.
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संबंधित प्रश्न
What are centrioles? Write about their functions.
Give functions.
Plasma membrane
Give functions.
Lysosome
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 :
_______ are hereditary units.
Distinguish between the following pairs of terms :
Centrosome and chromosome
Distinguish between the following pairs of terms :
Plant cell and animal cell
Organelle without a cell membrane is
Identify the cellular structure with the help of the following clue:
A non-living rigid layer surrounding the plasma membrane.
Give two examples of cell organelles.
