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Describe how a nerve impulse travels from neurone A to neurone B.

As an action potential arrives at A (the presynaptic terminal), pre-formed vesicles containing a chemical neurotransmitter fuse with the presynaptic membrane, releasing the chemical neurotransmitter into the...
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Answered by Medani E. • Biology tutor
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Describe how a neurone communicates its information with an adjacent neurone through the synapse

When two neurones meet we have a something that acts like a bridge to connect the two neurones together and this is called a synapse. When an impulse is traveling through one neurone and wants to continue al...
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Answered by Leila T. • Biology tutor
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Explain the role of ADH in regulating the water content of the blood.

ADH (anti-diuretic hormone) helps to regulate the water content of blood by influencing how much urine is produced by the kidneys. When blood volume increases, due to increased hydration, the osmolarity decr...
OT
Answered by Oliver T. • Biology tutor
21239 Views

Describe a simple food chain and the trophic levels within it

Grass -> rabbit -> Fox -> Crow -> Bacteria + FungiGrass = producer - first trophic level, uses photosynthesis to convert carbon dioxide and water to glucose Rabbit = primary consumer - second tro...
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Answered by Ashley C. • Biology tutor
4139 Views

Describe the process of diffusion?

Diffusion is the process where water molecules move from a negative water potential to a more negative water potential through a semi permeable membrane.
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Answered by Fawcett G. • Biology tutor
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