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What is true about ribosomes ?...

What is true about ribosomes ?

A

The prokaryotic ribosomes are 80S, where S stands for sedimentation coefficient

B

These are composed of ribonucleic aciid and proteins

C

These are found only in eukaryotic cells

D

These are self-splicing introns of some RNAs

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The correct Answer is:
B
Ribosomes are large, non-membranous, RNA-protein complexes, which are necessary for protein synthesis. In prokaryotes, 70S type of ribosomes are found while 80S type of ribosomes are found in eukaryotes.
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ARIHANT NEET-CELL: THE UNIT OF LIFE-Chapter Exercises C Medical Entranes Gallery (Collection of questions Asked in NEET & Various Medical Entrance Exams )
  1. Ribosomal RNA is actively synthesized in :-

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  2. Which one of the following does not differ in E. coli and Chlamydomona...

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  3. What is true about ribosomes ?

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  4. Select the correct statement from the following regarding cell membran...

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  5. Which one possesses giant chromosomes

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  6. Centromere is a part of:

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  7. Telemere repetitive DNA sequences control the function of eukarote chr...

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  8. B-chromosome is also known as

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  9. Polytene chromosome was discovered in

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  10. An interconnecting membranous network of the cell composed of vesicles...

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  11. Dictyosome is absent in

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  12. Extranuclear chromosomes occur in : -

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  13. Plant cells normally lack

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  14. Detailed structure of the membrane was studied after the advent of ele...

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  15. The nucleus is separated from surrounding cytoplasm by a nuclear membr...

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  16. Which one is stained usingg carmine?

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  17. Which one of the following organisms is not an example of eukaryotic c...

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  18. In eubacteria, a cellular component that resembles eukaryotic cell is

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  19. Comparing small and large cels, which statement is correct?

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  20. Middle lamella is present

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