BIOL1- AQA A-Level Biology Unit 1

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1. Why are monoclonal antibodies named so?

  • They come from cells from a single B cell
  • They come from cells from a single T cell
  • They come from cells from a single red blood cell
  • They come from cells from a single mouse
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2. Pulmonary ventilation is what?

  • Heart rate x breathing rate
  • Tidal volume x heart rate
  • Tidal volume x breathing rate
  • Heart rate x stroke volume

3. What's the trachea supported by?

  • Rings of cartilage
  • The lungs
  • Fatty deposits
  • Bronchi

4. Why does the Nicotine in cigarettes increase the risk of CHD?

  • It makes the red blood cells more sticky (leading to higher risk of thrombosis) and stimulates production of adrenaline, increasing heart rate/breathing rate
  • It makes the white blood cells more sticky (leading to higher risk of thrombosis) and stimulates production of adrenaline, increasing heart rate/blood pressure
  • It makes the red blood cells more sticky (leading to higher risk of thrombosis) and stimulates production of adrenaline, increasing heart rate/blood pressure
  • It makes the red blood cells more sticky (leading to higher risk of thrombosis) and stimulates production of oestrogen, increasing heart rate/blood pressure

5. What are extrinsic proteins?

  • Proteins that occur either on the surface of the bilayer or are only partially embedded. They act as carriers to transport material or are enzymes.
  • Proteins that span the whole phospholipid bilayer. They act as carriers to transport material or are enzymes.
  • Proteins that occur either on the surface of the bilayer or are only partially embedded. They give mechanical support and work as cell receptors.
  • Proteins that span the whole phospholipid bilayer. They give mechanical support and work as cell receptors.

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