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The DNA dependent DNA polymerase catalys...

The DNA dependent DNA polymerase catalyse polymerisation in -

A

`3' to 5'` direction

B

`5' to 3'` direction

C

Depend on the nature of template strand

D

Both (1) & (2)

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding DNA Polymerase**: DNA-dependent DNA polymerase is an enzyme that synthesizes DNA molecules from nucleotides, the building blocks of DNA. 2. **Direction of Polymerization**: The key aspect of DNA polymerase activity is the direction in which it catalyzes the polymerization of DNA. DNA polymerases can only add nucleotides to the growing DNA strand in a specific direction. 3. **5' to 3' Direction**: DNA polymerase synthesizes new DNA strands in the 5' to 3' direction. This means that it adds nucleotides to the 3' end of the growing strand, which is essential for the elongation of the DNA molecule. 4. **Template Strand**: The strand that is used as a template for the synthesis of the new DNA strand is oriented in the opposite direction, which is 3' to 5'. However, the new strand is synthesized in the 5' to 3' direction. 5. **Conclusion**: Therefore, the correct answer to the question is that DNA-dependent DNA polymerase catalyzes polymerization in the 5' to 3' direction. **Final Answer**: DNA-dependent DNA polymerase catalyzes polymerization in the 5' to 3' direction. ---
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The replication process involves the following steps: (I) The enzyme DNA-dependent DNA poly merases catalyse the polymerisation of DNA strand. (II) The lagging strand is synthesized in frag ments known as Okazaki fragments, which are later joined by the enzyme DNA Ligase. (III) The origin of replication serves as the recognition site for DNA polymerase and also it provides the site for attachment of RNA primer. (IV)The structural gene coding for a partic ular protein is flanked by the promoter and terminator. Choose the correct option:

The enzyme DNA dependent RNA polymerase catalyses the polymerisation reaction in ________ direction .

RNA polymerase I catalyses :

DNA polymerase III catalyses :

Assertion :- On template 5' to 3' DNA replicate in discontinuous manner. Reason : DNA polymerase catalyse polymerisation only is one direction that is 5' to 3'.

DNA -dependent RNA polymerase catalyzes transcription on one strand of the DNA which is called the