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Explain the process of synaptic transmission

An action potential reaches the presynaptic neurone. This causes calcium channels to open, leading to calcium ions entering the synaptic knob via facilitated diffusion. This causes synaptic vesicles containi...
TK
Answered by Thomas K. • Biology tutor
3230 Views

What is the difference between transcription and translation?

(Insert diagram of the central dogma DNA -> RNA -> Protein)Transcription is the process of converting DNA to RNA . First, within the nucleus , DNA helicase breaks hydrogen bonds between base pairs to u...
SS
Answered by Sabahat S. • Biology tutor
3346 Views

What is mRNA splicing and why is it important?

mRNA splicing is a form of post-transcriptional modification of the mRNA transcript. DNA is made up of coding regions called Exons. These determine the amino acid sequence of a polypeptide chain during prote...
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Answered by Katherine P. • Biology tutor
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Some poisons work by interfering with synaptic transmission at a neuromuscular junction. Describe the events at a synapse which lead to an action potential.

Across a membrane, there is a voltage at rest and this is known as the resting potential. This is deermined by the membrane permeability to different ions ie which ion channels are open at rest, and also by ...
LC
Answered by Leena C. • Biology tutor
2685 Views

How do I get an A* in biology?

Use the mark schemes. These change very little over the years and were my go to during A levels and GCSEs. Do as many past papers as you can possibly get your hands on and work out what the exam board give m...
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Answered by Emily R. • Biology tutor
3341 Views