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Explain what is meant by temporal and spatial summation in the context of synapses.

Context : We often think of a linear model of one pre-synaptic neurone linking up with one post-synaptic neurone. In reality, the nervous system is a large network, many pre-synaptic neurones may terminate a...
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Answered by Bethany K. • Biology tutor
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What are the three components required for photosynthesis?

Carbon dioxide, water and sunlight
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Answered by Dylan A. • Biology tutor
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How is a resting potential achieved?

At resting potential the voltage of the cell is ~ -65mV A neurone sends an impulse from sensory receptorsThis causes sodium ion channels to open on the dendritesThis allows the movement of Na+ ions into the ...
Answered by • Biology tutor
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Why might a gene still code for a functioning enzyme after a substitution mutation to one base in the gene?

A substitution mutation is when one base is swapped for another base. There are several reasons why this might not change the functioning of an enzyme: DNA is a degenerative code. This means there is more th...
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Answered by Bill B. • Biology tutor
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What’s the difference between arteries, veins and capillaries?

Blood vessels allow blood to be circulated around the whole body for delivery of oxygen/nutrients and removal of waste products. Structure relates to function.• Arteries - take blood away from the heart. Art...
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Answered by Inshiya K. • Biology tutor
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