DP Biology (first assessment 2025)

Question 19M.1A.HL.TZ2.4

Date	May 2019	Marks available	[Maximum mark: 1]	Reference code	19M.1A.HL.TZ2.4
Level	HL	Paper	1A	Time zone	TZ2
Command term	Deduce	Question number	4	Adapted from	N/A

[Maximum mark: 1]

19M.1A.HL.TZ2.4

Which processes are involved in the development of cancer?

I. Mutations occur in oncogenes.

II. Oncogenes prevent cancer.

III. Oncogenes affect cell cycle regulatory proteins.

A. I and II only

B. I and III only

C. II and III only

D. I, II and III

[1]

Markscheme

Examiners report

This question was too easy, as answer II was too obviously wrong. This question did not discriminate well because most candidates had it right. Candidates did not seem to be put off by the fact that in I it said that mutations occur in oncogenes instead of saying that oncogenes are the result of a mutation in protooncogenes.

Syllabus sections

D. Continuity and Change » D2.1 Cell and nuclear division » D2.1.16. Consequences of mutations in genes that control the cell cycle

D. Continuity and Change » D1.3. Mutations and gene editing » D1.3.6. Consequences of mutation in germ cells and somatic cells

Question 19M.1A.HL.TZ2.4

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