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Explain the difference in the speed of conduction of an action potential along the length of a myelinated neurone and a non-myelinated neurone.

First, we need to explain how the action potential is conducted along the length of the axon. An action potential is transferred along an axon by the movement of Na + and K + ions into and out of the cell. T...
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Answered by Catherine H. • Biology tutor
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How does eutrophication work?

Fertilisers containing nitrogen are washed from fields to rivers and ponds. 2. This effectively fertilises the algae in the pond causing an 'algal bloom'. 3. The layer of algae on the surface stops sunlight ...
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Answered by Iona H. • Biology tutor
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How are blood glucose levels controlled in the body?

When there is an excess of glucose in the blood (as there would be after eating a meal), the increase in blood glucose concentration is detected by the beta cells of the islets of Langerhans in the pancreas ...
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Answered by Elizabeth T. • Biology tutor
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What is the difference between diffusion and osmosis?

Osmosis is the movement of solvent particles (usually referring to water) from an area of low concentration (i.e. lots of water particles) to and area of high concentration (i.e. less water particles and mor...
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Answered by Kaat M. • Biology tutor
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What are the functions of the Kidneys?

It is the kidneys job to filter the blood and remove waste products. The kidneys are made of functional units call nephrons of which there around a million per human kidney. In the renal corpuscle filrate co...
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Answered by Elizabeth A. • Biology tutor
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