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IB Biology HL A1.2.1 Dna As Genetic Material Questions

Practise IB Biology HL A1.2.1 by identifying DNA as genetic material in genomes and using tree and inheritance evidence to justify the conclusion.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify DNA as genetic material in living organisms using genome evidence from trees and inheritance.

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Study A1.2.1—DNA as genetic material conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL A1.2.1 Dna As Genetic Material Questions question 1

[Maximum number: 1]

The image shows the results of Griffith's experiment with S and R strains of Streptococcus pneumoniae in mice (Mus musculus).

Figure for Question IB Biology HL A1.2.1 Dna As Genetic Material Questions question 1 — IB Biology HL

What is an explanation for the results?

A

Mice vary in their resistance to bacteria.

B

The R strain and S strain mated.

C

R strain bacteria are more heat-stable than S strain.

D

DNA was transferred from heat-killed S cells to R cells.

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