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Describe the process of synaptic neurotransmission

Neurotransmission is a mechanism of propagating an electrical signal between neurons via the movement of charged particles. It is initiated when the arrival of an action potential at the axon terminal trigge...
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Answered by Betsy H. • Biology tutor
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Why does a mutation in the genetic code change the structure of a haemoglobin molecule?

The mutation alters the base sequence which therefore changes the sequence of Amino Acids coded for (the primary structure). Now the sequence of Amino Acids has been changed when bonds form and folding occur...
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Answered by Harry M. • Biology tutor
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What is the best method for Biology A level revision?

As an A* biology student, I believe I can help show others the best way to revise for biology and receive the grade they want. Firstly, acquire a text book that you know contains all the information from you...
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Answered by Orla B. • Biology tutor
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What are the differences in the structures of arteries and veins?

Arteries have a much narrower lumen (the middle bit of space) and a much thicker wall. This is due to the fact that arterial walls contain more muscle and elastic fibres, than those of veins. Reason: Arterie...
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Answered by Matilda C. • Biology tutor
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Which protein structure is broken down due to denaturalization: primary, secondary, tertiary or quaternary?

Denaturalization breaks down all the structures but the primary one. Remember that the primary one is made up of the aminoacids. If we break the peptide bond between aminoacids we're changing the protein, no...
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Answered by Blanca G. • Biology tutor
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