Biology 9700 · AS & A Level · Replication and division of nuclei and cells

Replication and division of nuclei and cells — practice question

Which statement correctly explains how carcinogens affect lung tissue?

  • ACells of the alveoli walls divide more rapidly than normal by reduction division causing a tumour to develop.
  • BCilia are paralysed and mucus accumulates in the lungs, causing DNA to change and a tumour to develop.
  • CDNA changes, causing bronchial epithelial cells to divide by mitosis in an uncontrolled way, causing a tumour to develop.
  • DHaemoglobin carries less oxygen, causing bronchial cells to divide by mitosis in an uncontrolled way, causing a tumour to develop.

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