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Describe how ACh transmits nerve impulses across Cholinergic Synapse

1.AP arrives at the presynaptic neurone2.AP stimulates voltage gated Ca ion channels to open3.Increased permeability of Ca ion channels causes synaptic vesicles to fuse with presynaptic membrane4. Exocytosis...
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Answered by Natasha A. • Biology tutor
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To what extent are the flaws in ontological arguments incapable of being overcome?

The key to answering this question is to maintain nuance throughout, with questions revolving around complex topics such as ontological arguments, a strong answer will rely upon a demonstration of subtlety a...
KB
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Explain how skeletal muscle contracts.

There are several simple steps that occur each time a skeletal muscle contracts which follow the sliding filament model. Firstly a nerve impulse travels down a motor neuron releasing neurotransmitter acetylc...
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Answered by Yuval G. • Biology tutor
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Describe the process of transcription in detail (6 marks)

Transcription is the process by which a section of DNA acts as a template for the creation of a complementary mRNA strand. mRNA is needed for the creation of a polypeptide. An enzyme called DNA helicase bind...
KH
Answered by Katherine H. • Biology tutor
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Describe and explain the differences in the function of the sympathetic and parasympathetic nervous systems.

The sympathetic and parasympathetic nervous systems tend to have opposite effects on the organs which are innervated by their nerves. The Sympathetic NS innervates organs via the sympathetic chain and the pa...
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Answered by Amar S. • Biology tutor
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