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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...
MC
Answered by Matilda C. • Biology tutor
4504 Views

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
2810 Views

What are the differences between DNA and RNA?

-DNA is double stranded, while RNA is single stranded -DNA has the bases ATCG, while RNA has AUCG -DNA has the sugar base Deoxyribose, RNA has Ribose -DNA forms a double helix, RNA does not form a double helix
SK
Answered by Siddhesh K. • Biology tutor
2895 Views

Explain how nerve transmission occurs at the synapse.

As an action potential arrives at the presynaptic knob, the membrane is depolarised. This causes calcium channels in the membrane to open and calcium ions to flood in. This influx of calcium causes vesicles ...
AH
Answered by Abigail H. • Biology tutor
2799 Views

What is the process of saltatory conduction and why is it important in the human nerve system?

Many (Not all) neurons are myelinated by schwann cells. The myelination covers the neuron with a fatty layer with small gaps between each schwann cells. These small gaps are called nodes of ranvier. When an ...
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Answered by Han Y. • Biology tutor
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