Home Biology Biotechnology Principles and Processes NCERT Taq polymerase is used in, polymerase chain …
Biology Biotechnology Principles and Processes NCERT Single Correct MCQ
Published on: August 11, 2026

Taq polymerase is used in, polymerase chain reaction, because:

A
It becomes inactive at high temperature
B
It makes other enzyme active at high temperature
C
It remains active during high temperature
D
It is obtained from thermostable virus.

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Text Solution

Verified by Experts
The correct answer is:
C

Taq polymerase is a thermostable enzyme isolated from the bacterium Thermus aquaticus.

• PCR involves repeated heating (≈94–95°C) for DNA denaturation.

• Most enzymes would denature at this temperature, but Taq polymerase remains stable and active, allowing DNA synthesis at ~72°C.

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