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Biotechnology: Principles and Processes — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYBiotechnology: Principles and Processes1 Mark
MCQ
The term 'molecular scissors' generally refers to :
  • ✓
    $\text{DNA}$ polymerases
  • B
    $\text{RNA}$ polymerases
  • C
    Restriction endonucleases
  • D
    $\text{DNA}$ ligases
✓

Answer

Correct option: A.
$\text{DNA}$ polymerases
Restriction endonucleases cut $\text{DNA}$ segments at specific sites of $4$ or $6$ base pair length, called the restriction sites and are therefore known as the molecular scissors.
$\text{DNA}$ polymerase helps in the synthesis of $\text{DNA}$ and $\text{RNA}$ polymerase catalyses the synthesis of $\text{RNA}$.
​​​​​​​$\text{DNA}$ ligases on the other hand help in joining $\text{DNA}$ fragments by helping in the formation of phosphodiester bonds between them.

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