DP Biology (first assessment 2025)

Test builder »

Question SPM.2.SL.TZ0.a

Select a Test
Date May Specimen-2023 Marks available [Maximum mark: 4] Reference code SPM.2.SL.TZ0.a
Level SL Paper 2 Time zone TZ0
Command term Outline Question number a Adapted from N/A
a.
[Maximum mark: 4]
SPM.2.SL.TZ0.a

Outline how mutation can lead to cancer.

[4]

Markscheme
  1.  mutations are random changes in the sequences of genes/DNA;
  2.  (mutation) may involve addition/deletion/substitution/inversion of DNA bases;
  3.  (mutations) in tumour suppressor genes/oncogenes;
  4.  uncontrolled cell division/mitosis occurs;
  5.  abnormal cells cannot perform their function;
  6.  they divide repeatedly to form tumours;

Syllabus sections