Compare consequences of mutations in body cells with those in cells contributing to future generations.
Tę umiejętność sprawdza 7 zadań wzorowanych na arkuszach IB z lat 2022–2026.
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.
In which cell could a new mutation be transmitted directly to a child through fertilization? A. A sperm cell B. A liver cell C. A mature skin cell D. A pancreatic beta cell
Changes in genetic material can have different consequences. (a) Outline how mutations can contribute to cancer. (b) Outline one human disease caused by an autosomal recessive allele. (c) Explain the role of mutation in evolution. One additional mark is…
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.
Predict, with a reason, what could be seen if the tumour were growing rapidly instead of slowly.
Discuss how replacing affected somatic tissue with functioning stem-cell descendants could affect a person with an inherited disorder and that person’s future children.
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