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Polysome is formed by...

Polysome is formed by

A

several ribosomes attached to a single mRNA

B

many ribosomes attached to a strand of endoplasmic reticulum

C

a ribosome with several subunits

D

ribosomes attached to each other in a liner arrangement

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The correct Answer is:
A
The group of ribosomes together with the single mRNA molecules , they are translating is called polysome. They are formed by several ribosomes attached to a single mRNA.
In eukaryotic cells the ribosomes are attached to rough endoplasmic reticulum by ribophorin protein. Electron microscopy reveals that membranes of homogenised endoplasmic reticulum disrupt to form closed vesicles called microsomes. Microsomes derived from rough endoplasmic reticulum are studied with ribosomes and are called rough ribosomes.
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-MOLECULAR BASIS OF INHERITANCE-EXERCISE
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  2. Whose experiments cracked the DNA and discovered unequivocally that a ...

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  3. Polysome is formed by

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  4. Which one of the following pairs of codons is correctly matched with t...

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  5. A sequential expression of a set of human genes occurs when a steroid ...

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  6. One gene - one enzyme relationship was established for the first time ...

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  7. The Okazaki fragments in DNA chain growth

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  8. Differentiation of organs and tissues in a develping organism, is asso...

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  9. The length of DNA molecile greatly exceeds the dimensions of the nucle...

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  10. Molecular basis of organ differentiation depends on the modulation in ...

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

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  12. "One gene one enzyme" theory was proposed by

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  13. Amino acid sequence, in protein synthesis is decided by the sequence o...

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  14. Which one of the following makes use of RNA as a template to synthesiz...

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  15. Which one of the following hydrolyses internal phosphodiester, bonds i...

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  16. During transcription holoenzyme RNA polymerase binds to a DNA sequence...

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  17. Telomerase is an enzyme which is a

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  18. During replication of a bacterial chromosome DNA syntnthesis stars fro...

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  19. After a mutation at a genetic locus the character of an organism chan...

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  20. The telomeres of eukaryotic chromosomes consist of short sequences of

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