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A Level

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 conta...

TK
Answered by Thomas K. Biology tutor
2870 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

SS
Answered by Sabahat S. Biology tutor
2938 Views

The function f is defined as f(x) = e^(x-4). Find the inverse of f and state its domain.

Firstly, we let y=f(x) so that y=ex-4. The aim of this question is to find the inverse of y=f(x), and in order to do that, we must rearrange the question so that x becomes the subject of the eq...

RK
Answered by Rutwik K. Maths tutor
10466 Views

How can XOR be used in encryption and what type of encryption is this ?

As we know, XOR is a logical operator which can take 2 inputs and process one output. Given that two parties want to exchange this would be very useful. If A has message 1010 which may stand for "hel...

AA
Answered by Ahmed A. Computing tutor
2031 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 pr...

KP
Answered by Katherine P. Biology tutor
10745 Views

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