B1 - Understanding Organisms

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1. Spinal Reflex

  • sensory neurone -> relay neurone ->motor neurone -> effector
  • receptor -> sensory neurone -> relay neurone
  • receptor -> sensory neurone -> relay neurone ->motor neurone -> effector
  • CNS -> receptor -> sensory neurone -> stimulus-> motor neurone -> effector -> response
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2. What are memory cells NOT called?

  • M cells
  • T cells
  • Lymphocytes

3. What does not raise Blood Pressure

  • Healthy DIet
  • Being overwieght
  • Salt
  • Stress

4. Reflex Arc

  • stimulus -> receptor -> sensory neurone -> CNS -> motor neurone -> effector -> response
  • CNS -> receptor -> sensory neurone -> stimulus-> motor neurone -> effector -> response
  • stimulus -> receptor -> sensory neurone -> motor neurone -> effector -> response
  • stimulus -> receptor -> motor neurone -> effector -> response

5. An example of Homozygous =

  • Aaa
  • AA or aa
  • Aa or aA
  • aaA
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