DP Biology (first assessment 2025)

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Question SPM.1A.HL.TZ0.9

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Date May Specimen-2023 Marks available [Maximum mark: 1] Reference code SPM.1A.HL.TZ0.9
Level HL Paper 1A Time zone TZ0
Command term Question number 9 Adapted from N/A
9.
[Maximum mark: 1]
SPM.1A.HL.TZ0.9

What is a reason that Taq polymerase is a suitable enzyme for use in the polymerase chain reaction (PCR)?


A.  It can work at a wide range of pH.

B.  It works at higher temperatures than most enzymes.

C.  It can separate two strands of DNA.

D.  It allows DNA to be replicated without the use of primers.

[1]

Markscheme

B

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