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Give information about ribosomes in shor...

Give information about ribosomes in short.

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Ribosomes are the granular structures first observed under the electron microscope as dense particles by George Palade (1953).
Ribosomes are composed of ribonucleic acid (RNA) and proteins and are not surrounded by any membrane.
The eukaryotic ribosomes are 80S while the prokaryotic ribosomes are 70s. Here .S. stands for the sedimentation coefficient, it indirectly is a measure of density and size.
Both 70s and 80S ribosomes are composed of two subunits.
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KUMAR PRAKASHAN-CELL : THE UNIT OF LIFE-Section - A (Exam Oriented Qustions -Answers Form Darpan)
  1. Discuss in detail the structure of plasma membrane with diagram.

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  2. Explain : On what basis substances are transported by plasma membrane/...

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  3. Give information about chemical composition and function of cell wall.

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  4. What is meant by Endomembrane system? Which cell organelles are seen i...

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  5. Describe about Endoplasmic Reticulum.

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  6. Write a short note on Golgi Apparatus.

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  7. Write a short note on Lysosomes.

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  8. Explain : Lysosomes can digest any biomolecules.

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  9. Give name and function of membrane bound structure occupying most of t...

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  10. Write a note on vacuole.

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  11. Give information about structure, location and function of mitochondri...

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  12. Where are plastids seen ? Explain its type and functions in short.

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  13. Describe structure and function of Chloroplasts.

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  14. Give information about ribosomes in short.

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  15. What is Cytoskeleton ? Give information about its components, structur...

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  16. Describe micro structure of cilia and flagella.

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  17. Explain Centrosome and Centrioles.

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  18. Explain Nucleus is the central point of all activities of cell.

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  19. Describe about nucleus in detail.

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  20. Show composition, structure and type of chromosomes.

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