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How does an action potential travel across a cholergenic synapse?

An action potential arrives at synaptic knob. This causes voltage-gated Ca2+ ion channels to open, resulting in an influx of Ca2+ ions diffusing into the synaptic knob. This then causes vesicles containing a...
VF
Answered by Victoria F. • Biology tutor
2989 Views

(a) Express x +4x+7 in the form (x+ p) +q , where p and q are integers.

(x + 2) 2 +3
DS
Answered by Dylan S. • Maths tutor
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For sketching the graph of the modulus of f(x) (in graph transformations), why do we reflect in the x-axis anything that is below it?

Let's remember what applying a modulus to any number actually does. Applying the modulus to a number just gives us back the positive version of that number- if it is positive, we get back itself, and if it i...
SR
Answered by Stefanos R. • Maths tutor
6423 Views

Why is DNA replication called semi-conservative replication?

Semi-conservative replication refers to replication of DNA in which the newly produced DNA molecules will contain 1 strand from the original DNA and a another strand that had been newly synthesised. In order...
AA
Answered by Awais A. • Biology tutor
17798 Views

Using methods of substitution solve the following simultaneous equations: y - 2x - 1 = 0 and 4x^2 + y^2 - 25 = 0

(1) 4x 2 + y 2 - 25 = 0 (2) y - 2x - 1 = 0 Rearranging (2) into an equation of y in terms of x we have:y = 2x +1 now substituting into equation (1) 4x 2 + (2x +1) 2 - 25 = 0 and now expanding this equation w...
KM
Answered by Kerry M. • Maths tutor
3950 Views