A2.1 Origins of cells Quiz
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5 questions, one answer each
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1. Which was absent from the pre-biotic atmosphere?
- A. Carbon dioxide
- B. Methane
- C. Free oxygen
- D. Water vapour
2. The Miller–Urey experiment showed that:
- A. Cells can form spontaneously
- B. Amino acids can form from simple inorganic substances
- C. RNA can self-replicate
- D. LUCA lived at hydrothermal vents
3. Which property of RNA suggests it could have been both gene and enzyme?
- A. It is double-stranded
- B. It has catalytic activity and can be replicated
- C. It contains thymine
- D. It is more stable than DNA
4. Which is evidence for a last universal common ancestor?
- A. All organisms have cell walls
- B. The universal genetic code
- C. All organisms are aerobic
- D. All organisms have nuclei
5. Why was compartmentalization necessary for the first cells?
- A. To allow photosynthesis
- B. To let internal chemistry differ from outside
- C. To produce oxygen
- D. To prevent replication