Back to quiz

6. What do antagonistic drugs do to synaptic transmission?

  • stimulate release of neurotransmitter from presynaptic neurone so more receptors are activated
  • They block receptors so they cant be activated by neurotransmitters
  • inhibits the enzyme that breaks down neurotransmitters
  • More receptors are activated as drugs same shape as the neurotransmitters

7. A DNA probe can be used to look for clinically inportant genes (mutated genes) ?

  • True
  • False

8. How many potassium ions are pumped into the axon by the sodium-potassium pump?

  • None
  • 2
  • 3
  • 1

9. How do ectotherms control their body temperature?

  • Physcological
  • Behaviour
  • Homeostasis

10. What type of receptor is a Pacinian corpuscle?

  • mechanoreceptor
  • photoreceptor
  • chemoreceptor
  • baroreceptor

11. What's a DNA Primer?

  • Short piece of RNA
  • Long piece of DNA
  • Short piece of DNA
  • Long piece of RNA

12. Which of these is the cloning of a gene outside a living organism?

  • In vevo
  • In vitro
  • In vivo
  • En vitro

13. Why are techniques in medical diagnosis being updated and automated?

  • Cost effective
  • All of these reasons
  • So can be done on large scale
  • Less people needed to operate the technique

14. Where are Thermoreceptors found?

  • Skin AND the hypothalamus
  • bloodstream
  • Skin
  • Temperature

15. AlphA cells secrete glucagon into blood and beta cells secrete insulin into blood?

  • True
  • False

16. Germ line therapy, which of the following does if affect allele wise?

  • Sex cells
  • Eye cells
  • Body cells
  • Muscle cells

17. What is the Sacrolemma?

  • a collection of mitochondria
  • the cell membrane of muscle fibre cells
  • a network of internal membranes
  • folds of the sarcoplasm

18. Can a DNA probe be used to look for a single gene or is it used to look for lots of genes at the same time

  • Both
  • Single gene only
  • Lots of genes

19. Do chemical mediators stimulate local response or widespread response?

  • Local
  • Widespread

20. Correct description of a Cone cell?

  • Less sensitive to light, one cone joins one neurone, high visual acuity, gives information in black and white
  • Less sensitive to light, one cone joins more than one neurone, high visual acuity, gives information in colour
  • Less sensitive to light, one cone joins one neurone, high visual acuity, gives information in colour
  • Less sensitive to light, one cone joins one neurone, low visual acuity, gives information in colour