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Neurons do not make direct contact but are separated by synapses. Impulses cross a synapse by means of a neurotransmitter. Describe the process of neurotransmitter release at a synapse. You may use a labelled diagram.

Action potential arrives at axon terminal of presynaptic neuron Voltage-gated Ca2+ channel opens Ca2+ enters the cell Ca2+ signals to vesicles Vesicles move to the membrane Neurotransmitters are released by ...
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Answered by Charlotte M. • Biology tutor
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How is ATP used in myofibril contraction?

ATP is bound to the myosin head to cause detachment of the head from the actin filament, the ATP is then hydrolysed and as a result the myosin head reattaches to the actin filament. The now hydrolysed ATP, i...
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Answered by Sam W. • Biology tutor
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What are docstrings and how do I use them to improve my code readability?

Docstrings are strings placed at the beginning of classes, functions, or .py files. They are implemented using three single quotes at the beginning and end. For example: def Addition(a,b): ''' This function ...
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Answered by Callum W. • Python tutor
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Faut-il légaliser le cannabis? Quels sont les avantages et les inconvénients?

Premièrement, il faut qu'on commence en dirant que les drogues ont toujours fait partié de la societé, et qu'elles ne vont pas disparaître dans un avenir très proche. Je crois que beaucoup de gens fument par...
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Answered by Tom B. • French tutor
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theta = arctan(5x/2). Using implicit differentiation, find d theta/dx.

First, we must rearrange to give 2tan(θ) = 5x. Differentiate both sides with respect to x: 2sec 2 (θ)dθ/dx = 5 Use identity sin 2 (θ) + cos 2 (θ) = 1, dividing through by cos 2 (θ), to get 2(1+tan 2 (θ))dθ/d...
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Answered by Callum W. • Maths tutor
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