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When an action potential arrives at the presynaptic terminal of a neuromuscular junction, the depolarisation stimulates voltage-gated Ca2+ channels to open, and calcium ions flow into the neurone. This fl...
Going down the group, Group 2 carbonates decompose at increasingly higher temperatures.This is because the Group 2 metal ion radius/size increases down the group while the charge stays the same.This means...
Protein production by the ribosome ultimately depends on the triplet sequence of DNA. Each triplet codes for one amino acid, thus, alterations in this triplet code will change the amino acid if it codes f...
When an action potential arrives at the junction, the depolarisation causes voltage-gated calcium channels to open resulting in the influx of calcium ions in to the pre-synaptic neurone. This triggers the...
The alveoli have a number of adaptations for effective gaseous exchange. Firstly, they have a very large surface area to volume ratio; the combined surface area of the alveoli is approxim...
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