AQA Biology Unit 5

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1. How does panting lead to heat loss?

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

2. Why do cone cells have a higher level of visual acuity?

  • Several cone cells are connected to one bipolar cell
  • Rhodopsin is bleached at a low light intenisty
  • Each cone cell is conneted to an individual neurone
  • Rhodopsin is bleached at a high light intenisty

3. 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

4. What is meant by homeostasis?

  • Chemical reactions
  • Maintaining a constant internal environment
  • How kidneys work
  • Maintaining a constant external environment

5. How does insulin affect blood glucose levels?

  • Lowers blood glucose levels
  • Increases blood glucose levels
  • Causes gluconeogenesis to occur
  • Causes glycogenolysis to occur

Comments

Indiaistrying

sass master, good quiz though thank you

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