DP Biology (first assessment 2025)

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Question SPM.2.HL.TZ0.10b

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Date May Specimen-2023 Marks available [Maximum mark: 7] Reference code SPM.2.HL.TZ0.10b
Level HL Paper 2 Time zone TZ0
Command term Explain Question number b Adapted from N/A
b.
[Maximum mark: 7]
SPM.2.HL.TZ0.10b
(b)

Explain how the function of DNA is linked to its molecular structure.

[7]

Markscheme
  1.  DNA base sequence provides information;
  2.  gene expression / genes provides a template for the construction of a protein;
  3.  transcription occurs / mRNA is built using DNA as a template;
  4.  DNA nucleotide structure described/sugar and phosphate and base;
  5.  polymer of nucleotides makes a DNA strand;
  6.  DNA has two anti-parallel strands;
  7.  complementary base pairs/A pairs with T and C with G;
  8.  strands linked by hydrogen bonding between bases;
  9.  double helix shape / helix held by hydrogen bonds;

Accept points in clearly labelled diagram

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