AQA Biology Unit 5

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1. How is resting potential established in an axon?

  • Active transport of sodium ions out of an axon
  • Active transport of sodium ions into an axon
  • Diffusion of sodium ions out of an axon
  • Active transport of potassium ions out of an axon
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Other questions in this quiz

2. How does panting lead to heat loss?

  • Causes vasoconstriction
  • Increases thirst so organism drinks more to cool self down
  • Evaporation of water from the lining of the mouth, heat transferred from blood
  • Activates the heat gain centre in hypothalamus

3. How do impulses move along a mylinated neauron

  • Diffusion
  • Impulses jump between gaps in the axon known as node of ranvier
  • Saltatory conduction
  • Along the mylinated sheath

4. What is a Codon?

  • Three paired bases forming an amino aicd
  • Freeflloating RNA nucleotides
  • Three unpaired bases on mRNA that code for an amino acid
  • Three unpaired bases on tRNA that code for an amino acid

5. What is an antigen?

  • I came here for unit 5 and do not remember the answer for this question, I mean who cares if this is a synoptic unit with a big essay question at the end
  • A protein on the cell surface membrane triggering an immune response
  • A protein on the surface of a cell
  • A pathogen




sass master, good quiz though thank you

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