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