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Briefly outline how excitation and inhibition are involved in synaptic transmission (4 marks)

If neurotransmitters are excitatory then they increase the positive charge of the neuron, making it more likely to fire. An example of this is dopamine, of which high amounts are linked to schizophrenia. Whe...
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Translate into Latin: "The girls were walking to the forum." From OCR GCSE Latin Language Paper (9-1), 2015.

Answer: puellae ad forum ambulabant "The girls" - The word for girl is puella, genitive singular puellae, which means puella is 1st declension. "the girls" is in the nominative case, so w...
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Answered by Augustine A. • Latin tutor
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What is differentiation?

Differentiation is a method used to find the rate of change of a function with respect to a given variable, eg. how f(x) changes with respect to x. There are different ways to find the derivative of a functi...
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Answered by Harry T. • Maths tutor
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Find the derivative of A^4 + 2A^2 - 3A + 4

Ask if they have found derivations before.If not:When we differentiate a polynomial like this by using the fact that:The derivative of A^x is xA^(x-1).So, we multiply the unknown variable, A, by the power an...
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Answered by Jake M. • Maths tutor
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(given a graph with a straight line and 2 labelled points) Find the equation of the line.

Every straight line can be written in the form y=mx+c.(If they seem completely unfamiliar with concept):M is known as the gradient of the line, which says how steep the line is. The bigger the number, the st...
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Answered by Jake M. • Maths tutor
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