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How is blood filtrated by the glomeruli in the kidneys?

Blood enters the glomerulus from the afferent arteriole at a very high pressure, so the hydrostatic pressure forces the contents of the blood out of the blood vessels, into the Bowman's capsule. However, a f...
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Answered by Joshua R. • Biology tutor
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Describe how a a neurone communicates it's information with an adjacent neurone through the synapse? (3 marks)

Neurotransmitter is released from presynaptic neurone into the synaptic cleftDiffuses across the synapse Neurotransmitter binds onto postsynaptic membrane
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Answered by Sofia P. • Biology tutor
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(i) What is the net agin of ATP in Glycolysis? (2 marks) (ii) Where is ATP used in Glycolysis?( 1marks)

(i) In the breakdown of glucose 4 ATP is produced, however 2 ATP are used leaving a net gain of 2 ATP.(ii) In the energy investment stage, 2 ATP molecules are used to phosphorylate glucose into fructose diph...
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Answered by Sofia P. • Biology tutor
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what are the types of speciation and how do they occur?

Sympatric speciation occurs when populations (groups) of a species that share the same habitat become reproductively isolated from each other this can be caused by numerous phenomenon. The most common is alt...
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Answered by Joshua M. • Biology tutor
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What is the difference between diffusion, osmosis and active transport?

Diffusion and osmosis both involve the movement of particles from a high concentration to a low concentration, down a concentration gradient. The key difference between the two, is that osmosis concerns the ...
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Answered by Fadheelah N. • Biology tutor
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