Biology 9700 · AS & A Level · Carbohydrates and lipids

Carbohydrates and lipids — practice question

The photomicrographs display a TS of an artery from a non-smoker and a TS of an artery from a smoker. What explains the appearance of the smoker’s artery?

  • AA cancerous tumour has formed and is blocking the lumen.
  • BNicotine has damaged the artery endothelium causing a plaque.
  • CTar has stuck to the artery wall forming a blockage.
  • DThe artery has become constricted due to carbon monoxide.

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