AQA Biology Unit 5

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1. What is meant by refractory period?

  • No new action potentials produced in this time
  • Polarisation
  • A levels that needs to be over come to produce a action potential
  • Threshold potential
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Other questions in this quiz

2. How does panting lead to heat loss?

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

3. Define Tropism

  • A movement that bares some relationship to the location of the stimulus
  • A growth movement of part of a plant in response to a directional stimulus
  • Random movement in response to a stimulus
  • Muscular Contractions

4. Define Taxis

  • The growth of a plant in response to a directional stimulus
  • Movement towards sunlight for photosynthesis
  • A movement that bares some relationship to the location of the stimulus
  • Random movement in response to a stimulus

5. Name the enzyme used to convert mRNA into cDNA

  • Reverse Transcriptase
  • Restriction Endonuclease
  • DNA Ligase
  • RNA Polymerase

Comments

Indiaistrying

sass master, good quiz though thank you

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