Compare spontaneous replication or repair errors with effects of chemical mutagens and mutagenic radiation.
Tę umiejętność sprawdza 6 zadań wzorowanych na arkuszach IB z lat 2023–2026.
In a hypothetical exposure, a radioactive iodine isotope accumulates in thyroid cells. (i) Deduce how its radiation could initiate cancer. (ii) Predict, with a reason, whether the resulting thyroid-cell mutation would be transmitted to the person’s children.
Identify one DNA mutation type that UV exposure can cause.
Suggest why the dark control and UV-only control have different colony counts.
Suggest why the two sunscreen treatments differ.
Which mechanism helps explain how prolonged exposure to cigarette smoke can raise cancer risk? A. Mutagenic compounds can alter DNA sequences in somatic cells B. Smoke causes cancer mainly by increasing the frequency of mutations in gametes C. Nicotine…
State one factor that can cause lung cancer.
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