Compare activation of oncogenes with loss of tumour-suppressor function as routes to uncontrolled proliferation.
Tę umiejętność sprawdzają 3 zadania wzorowane na arkuszach IB z lat 2023–2025.
Which feature is common to benign and malignant tumours in the standard model of tumour development? A. Both always invade every adjacent tissue B. Both grow as perfectly spherical masses C. Both arise from accumulated changes that disrupt control of cell…
Separately from mercury, consider a chemical carcinogen. Explain how such a substance can initiate cancer.
(a) Explain how changes in regulation of the cell cycle can lead to a tumour. (b) Outline the role of the right atrium during the cardiac cycle. (c) Describe carbon-cycle processes that release or consume carbon dioxide.
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