Other questions in this quiz

2. What is a proto-oncogene?

  • A gene that is responsible for inducing apoptosis
  • A normal gene that can undergo a mutation to become an oncogene
  • A gene that protects a cell from one step on the path to cancer
  • A gene which is inappropriately abnormally or excessively expressed in tumours and is responsible for their abnormal growth

3. Which of these is not true for malignant neoplasms?

  • The neoplasm is well-differentiated.
  • The growth rate of the neoplasm is relatively rapid.
  • There are numerous mitotic figures within the neoplasm.
  • The nuclei are hyperchromatic and pleopmorphic.
  • The neoplasm does not have a true capsule and have an ill-defined border.

4. Which of these is a factor in the growth of transformed, tumour cells?

  • Loss of contact inhibition and colony formation
  • Early maturation
  • Increased serum growth factor requirment
  • Increased cohesion and being anchorage dependent

5. Which of these is the first step in proliferation of normal cells?

  • The cell enters and progresses in the cell cycle
  • A signal is transduced across the membrane
  • A transduced signal is transmitted to the nucleus
  • The cell divides in a controlled way
  • A growth factor binds to and activated a cell surface growth factor receptor
  • Nuclear regulatory factors that initiate DNA transcription are activated

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