Home
Class 12
BIOLOGY
Many ribosomes may associate with a sing...

Many ribosomes may associate with a single mRNA to form mutiple copies of a poolypeptide simultaneously. Such strings of ribosomes are termed as

A

plastidome

B

polyhedral bodies

C

polysome

D

nucleosome

Text Solution

Verified by Experts

The correct Answer is:
C

Polysome is a string of ribosomes associated with a single mRNA . Polysome helps to produce a number of copies of the same polypeptide .
Nucleosome is the unit of eukaryotic DNA that consists of a DNA segment wrapped around a core of eight histone proteins . Nucleosome chain gives a beads on string appearance under electron microscope . Plastidome refer to all the plastids of a cell which work as a functional unit .
Polyhedral bodies or carboxysomes are present in several groups of autotrophic bacteria that assimilate inorganic carbon via Calvin cycle , e.g. Cyanobacteria.
Promotional Banner

Topper's Solved these Questions

  • NEET

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise MCQ|184 Videos
  • NEET 2020

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise All Questions|90 Videos

Similar Questions

Explore conceptually related problems

Several ribosomes may attach to a single mRNA and form a chain called

Assertion (A) : DNA code is copied in the synthesis of m-RNA. Reason ( R ) : t-RNA moves out of nucleus and after attaching on ribosomes form the template.

The following features occur during protein synthesis: (a) Movement of mRNA from the nucleus into the cytoplasm, where it binds to the ribosomes (b) Formation of tRNA-amino acid complex (c) Transcription of specific segments of DNA into mRNA molecules in the nucleus (d) Binding of N-terminal amino acid, methionine tRNA to the 'P' site of the ribosome. The tRNA anticodon 'pairs with AUG on mRNA' (e) Formation of peptide bond between first and second amino acids at the A site (f) Release of the complete polypeptide chain from mRNA and the ribosomes (g) Migration of dipeptide to form a tripeptide and then a polypeptide The correct order of events is:

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-NEET 2018-Exercise
  1. AGGTATCGCAT is a sequence from the coding strand of a gene. What will ...

    Text Solution

    |

  2. Match the items given in Column I with those in Column II and select t...

    Text Solution

    |

  3. Match the items given in Column I with those in Column II and select t...

    Text Solution

    |

  4. Match the items given in Column I with those in Column II and select t...

    Text Solution

    |

  5. Which of the following gastric cells indirectly help in erythropoiesis...

    Text Solution

    |

  6. Match the items given in Column I with those in Column II and select t...

    Text Solution

    |

  7. Which of the following is an occupational respiratory disorder?

    Text Solution

    |

  8. Calcium is important in skeletal muscle contraction because it

    Text Solution

    |

  9. Nissl bodies are mainly composed of

    Text Solution

    |

  10. Which one of the statements is incorrect?

    Text Solution

    |

  11. Select the incorrect match.

    Text Solution

    |

  12. Which of the following terms describe humans dentition?

    Text Solution

    |

  13. Which of the following events does not occur in rough endoplasmic reti...

    Text Solution

    |

  14. Many ribosomes may associate with a single mRNA to form mutiple copies...

    Text Solution

    |

  15. In which disease does mosquito transmitted pathogen cause chronic infl...

    Text Solution

    |

  16. Which of the following is not an autoimmune disease?

    Text Solution

    |

  17. Among the following sets of examples for divergent evolution, select t...

    Text Solution

    |

  18. Conversion of milk to curd improves its nutritional value by increasin...

    Text Solution

    |

  19. The term for similarity in organ structure seen in great diversity is ...

    Text Solution

    |

  20. Which of the following characteristics represents Inheritance of blood...

    Text Solution

    |