Human Health and Disease · NEET Preparation Zoology
Which molecular change can directly convert a normal proto-oncogene into an oncogene and promote uncontrolled cell proliferation?
Practice question from Human Health and Disease (NEET Preparation Zoology), with the correct answer and a step-by-step solution.
hard · MCQ · Q-1B95E5
Which molecular change can directly convert a normal proto-oncogene into an oncogene and promote uncontrolled cell proliferation?
- A.A mutation that causes constitutive activation of the proto-oncogeneCorrect answer
- B.Temporary reduction in the rate of DNA replication during normal cell division
- C.Increased production of antibodies against extracellular pathogens
- D.Complete stoppage of protein synthesis in all normal cells
Solution
Proto-oncogenes normally regulate cell growth and division. Mutations or other genetic alterations that make them constitutively active can convert them into oncogenes, leading to uncontrolled proliferation and cancer development.
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