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How do neurotransmitters transmit action potentials across synapses?

The process can be broken down into 3 main stages. 1 - An Action Potential triggers Calcium Influx: when the action potential arrives at the synaptic knob of the presynaptic neurone, it stimulates voltage-ga...
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Answered by Trishnaah S. • Biology tutor
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What if I didn't get into medical school the first time around?

First of all, it's important to realise that it's not the end of the world if you don't get in the first time around. Our current year is made up of a considerable amount of people who weren't immediately co...
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What is osmosis? A diagram may be useful for your explanation

Osmosis is the passive movement of water across a semi permeable membrane from an area of high concentration to an area of low concentration.
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Answered by Omar A. • Biology tutor
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Explain how CH3CH2CHO can react with a Grignard reagent to produce CH3CH2CH(OH)CH2CH3. State the reagents and give the mechanism.

Use the Grignard reagent CH 3 CH 2 MgBr. CH 3 CH 2 CHO + CH 3 CH 2 MgBr ---> CH 3 CH 2 CH(OH)CH 2 CH 3 step one: add Grignard reagent.step two: work up with H + /H 2 0.Mechanism on whiteboard.
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Answered by Jenny C. • Chemistry tutor
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Show x^2 + 8x +15 = 0 in the form of (x+b)^2 +c (complete the square) and then solve the equation

x 2 +8x +15 = 0 (x+4) 2 -16 +15=0 (x+4) 2 -1=0 (x+4)= (+/-)1 x = -3 or -5
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Answered by Omar A. • Maths tutor
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