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These questions are particularly stressful, because they seem completely random. But the most important thing to do is relax and think back to your syllabus. Can you make any links to the topic at hand an...

The ABO blood group is an example of codominance and multiple alleles. Unlike other characteristics which are determined by 2 alleles, blood group is determined by 3 alleles. The allele I^A corr...

A synapse is a gap between two separate neurons. When the electrical impulse from the first neuron reaches the nerve terminal of the first neuron, chemical messengers c...

Skin, mucosal lining, stomach acid

Any three of the following, in the correct order.
Action potential arrives at the pre-synaptic membrane Causes the voltage gated Ca2+ channels in the pre synaptic terminal to openCa2+ enters the pre ...