Umiejętności z tego działu sprawdza 12 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 11 z 54 arkuszy w bazie.
Carbon chemistry underlies the origin, storage and sustainable production of biological material. (a) Outline environmental conditions on early Earth that favoured diverse carbon compounds. (b) Describe practices that can make agriculture sustainable. (c)…
An early genetic system would need both information storage and reactions that use that information. Which observation strengthens the RNA-first hypothesis? A. Every RNA molecule forms a permanent double helix B. Ribose is absent from living cells C. RNA…
A reconstruction of the classic Miller–Urey apparatus passes a reducing gas mixture over heated water. Which mixture matches the original experiment? A. Methane, ammonia, hydrogen and water vapour B. Methane, nitrogen, oxygen and water vapour C. Carbon…
Which evidence is most relevant when reconstructing a possible hydrothermal-vent setting for LUCA? A. A living individual has been certified as the unchanged LUCA B. Molecular comparisons reveal shared ancient sequences among prokaryotic lineages adapted to…
Describe one characteristic used to argue that viruses are not living organisms.
Why did the results of the Miller–Urey apparatus support a chemical explanation for the origin of life? A. They showed that bacteria arose repeatedly in the apparatus B. They demonstrated that modern DNA can duplicate without enzymes C. They established that…
Genetic information helps explain early life and guide present-day conservation. (a) Describe RNA structure and evidence supporting an RNA-first stage of early life. (b) Describe uses of DNA-sequence analysis in biodiversity conservation. (c) Explain causes…
Discuss how the results are consistent with a last universal common ancestor.
An electrical-discharge experiment produces amino acids from a non-living mixture of simple chemicals. Which conclusion about early Earth does this type of result support? A. Modern cells spontaneously form whenever lightning occurs B. RNA must have originated…
Explain the conclusions supported by the final observations.
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