BIOL1- AQA A-Level Biology Unit 1

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1. What are the tracheal walls made of?

  • A series of highly branched tubules
  • Muscle lined with epithelial cels
  • Muscle lined with ciliated epithelium and goblet cells
  • Collagen and elastic fibres
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2. Which of these isn't a use of monoclonal antibodies?

  • Cancer treatment
  • Immunoassay
  • Treating HIV
  • Transplant surgery
  • Separation of a chemical from a mixture

3. What is a phagosome?

  • A vesicle that consists of a pathogen engulfed by a phagocyte
  • A vesicle that consists of a phagocyte engulfed by a pathogen
  • A vesicle that consists of a pathogen engulfed by a white blood cell
  • A vesicle that consists of a pathogen engulfed by a T cell

4. What is an antigen?

  • Medicine that inhibits the growth of or destroys microorganisms
  • A molecule that triggers the production of an antibody
  • Molecule produced in response to infection

5. What do antibodies consist of?

  • 2 heavy polypeptide chains and 2 short polypeptide chains
  • 3 heavy polypeptide chains and 1 short polypeptide chain
  • 1 heavy polypeptide chain and 3 short polypeptide chains
  • 4 heavy polypeptide chains

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