A2 EMPA Flashcards
Name 2 Stimuli that causes blinking (2 marks)
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Resting blink rate varies between 8 and 24 blinks per min. Why might variations in a test about blink rate produce 2 means that have overlapping 95% confidence limit? (2 marks)
There’s a disease that causes a change in blink rate however doctors don’t often use blink rate to diagnose the disease. Why not?
What 2 factors should be kept constant? (2 marks)
Advantage and disadvantage of timing for 20 seconds? (2 marks)
(Dot-to-dot Graph) Give 2 reasons why the student didn’t draw a line of best fit
No repeats were done but a statistical test could still be calculated, why?
How does an anaesthetic with similar shape to acetylcholine work? (3 marks)
Some drugs prevent Na channels opening. How does it stop action potentials being propagated
How do the protein channels on the presynaptic membrane allow action potentials to be propagated? (3 marks)
How would you conduct an experiment to find out if the difference between blink reflexes in 65 and 15 year olds is significant?
Anaesthetic blocks protein channels on the post-synaptic membrane. How does this stop blinking
Why is the anaesthetic not suitable as a long-term treatment for eye pain?
The scientists had to consider the welfare of the rabbits. Give 2 factors the scientists considered
The anaesthetic is as an eye drops/ injection in eye. Why must contact lenses be removed before surgery?
