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List two essential roles of ribosome dur...

List two essential roles of ribosome during translation.

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(i) A tunnel for mRNA. It lies between the two subunits.
(ii) A groove for passage of newly formed polypeptide. The groove is a part of larger subunit.
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MODERN PUBLICATION-MOLECULAR BASIS OF INHERITANCE -REVISION EXERCISES (SHORT ANSWER TYPE -I QUESTIONS )
  1. Decribe the structure of a nucleosome.

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  2. Define nucleosome.

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  3. List two essential roles of ribosome during translation.

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  4. Examine the diagram of mRNA given below. Mark the 5’ and 3' ends of th...

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  5. What do you mean by central forces?

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  6. What is genetic code? Give its two characteristics.

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  7. Give three differences between DNA and RNA.

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  8. Draw a neat diagrammatic structure of a molecular model of DNA propose...

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  9. A double stranded DNA molecule has 20% of cytosine. Using Chargaff's l...

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  10. Certain molecular processes are given in column (A). Provide the terms...

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  11. Read the sequence of the nucleotides in the given segment of mRNA and ...

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  12. (a) Expand hnRNA. (b) Name the enzyme that transcribes it. (c) It ...

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  13. Given below is a sequence of steps of transcription in a eukaryotic ce...

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  14. Draw a schematic diagram of a part of double stranded dinucleotide DNA...

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  15. Discuss in detail how RNA can be used to silence specific genes? Hin...

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  16. State the role of transposons in silencing of mRNA in eukaryotic cells...

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  17. How are 'sticky ends' formed on a DNA strand? Why are they so called ?

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  18. Differentiate between the genetic codes given below : (a) Unambig...

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  19. Following are the features of genetic codes. What does each one indica...

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  20. Why does the lac operon shut down some time after the addition of lact...

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