B1 - Understanding Organisms Revision

1. What is the purpose of the iris?

  • Controls the amount of light entering the eye
  • Refracts light rays
  • Carries nerve impulses to the brain
  • Focuses light onto the retina
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Other questions in this quiz

2. In the process of spreading malaria, the mosquito is the...

  • Vector
  • Parasite
  • Host
  • Pathogen

3. Which of the following is a depressant?

  • Nicotine
  • Asprin
  • Solvents
  • LSD

4. How and where are excess carbohydrates stored?

  • As glycogen in the liver
  • As glycogen under the skin and around organs
  • As adipose tissue in the liver
  • As adipose tissue under the skin and around organs

5. What is the central nervous system made up of?

  • The spinal cord and nerves to and from it
  • The brain and spinal cord
  • The brain, spinal cord and nerves to and from them
  • The brain and nerves to and from it

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