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While revision is subjective, with successful methods depending on the individual, essay based subjects are widely considered difficult to revise for. Especially during stressful times like exam season. I...

Independent segregation of chromosomes. Crossing over of chromosomes (genetic recombination)

The presynaptic part of both junctions are both almost identical, although different neurotransmitters can be used depending on location and function. Acetylcholine is usually found in neuromuscular junct...

1. The action potential arrives at the axon terminal 2) Voltage-gated Ca2+ channels open 3) Ca2+ enters the presynaptic neurone 4) Ca2+ signals to neurotransmitter vesicles 5) Vesicles move to the memb...

Where does the discriminant come from? It is from the quadratic formula. It is the part under the square root sign, in other words it can't be negative or there are no real solutions to your quadratic equ...