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IB Biology HL A2.1.4 Evidence for Origin of Carbon Compounds Questions

Practise IB Biology HL A2.1.4 by evaluating Miller–Urey findings and comparing locations where organic compounds could form abiotically.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Outline locations and environmental conditions—such as atmosphere, hydrothermal vents or extraterrestrial sources—where abiotic organic synthesis could occur.
  • Interpret Miller–Urey findings as evidence that organic compounds can form abiotically, without living organisms.

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Study A2.1.4—Evidence for origin of carbon compounds conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL A2.1.4 Evidence for Origin of Carbon Compounds Questions question 1

[Maximum number: 1]

The Miller-Urey experiment carried out in 1952 tested the hypothesis of the chemical origin of life. What were the key findings?

A

Living cells could be produced from a mixture of chemicals.

B

Complex organic molecules could form under simulated primordial conditions.

C

Life could spontaneously emerge without external influence.

D

DNA and RNA could self-replicate in a prebiotic environment.

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