B1 - Understanding Organisms Revision

1. What is the purpose of the iris?

  • Focuses light onto the retina
  • Refracts light rays
  • Controls the amount of light entering the eye
  • Carries nerve impulses to the brain
1 of 15

Other questions in this quiz

2. Why does the body need protein?

  • For growth and repair
  • To prevent constipation
  • To make haemoglobin
  • For energy

3. 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

4. What is the first stage in a spinal reflex?

  • Reponse
  • Effector
  • Stimulus
  • Receptor

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

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

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Nervous system, hormones and behaviour resources »