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How are signals transmitted across the synaptic cleft?

When the action potential reaches the synaptic knob it causes voltage-gated calcium ion channels to open, allowing calcium ions to diffuse in. These calcium ions cause synaptic vesicles containing acetylchol...
DE
Answered by Dani E. • Biology tutor
4565 Views

How do you work out the old price of an item having been given the new price after a specified percentage change?

These problems can be worked out using the equation: new = old x multiplier Where: new : is the new price of an item old : is the old price of an item (before it was changed) multiplier : is the percentage o...
RT
Answered by Rachael T. • Maths tutor
29773 Views

How do you go about rearranging equations where the required subject appears on both sides? Such as making x the subject of 7x + a = 3x + b.

To rearrange any equation, you must always do the same to both sides. If you take a number from one side, you must also take it from the other. If you divide a side by one number you must divide the other by...
RT
Answered by Rachael T. • Maths tutor
22410 Views

A guanine is swapped for a thymine in a gene sequence. Explain how this may alter the function of the protein it translates.

The alteration in the nucleotide sequence of the gene may result in a change in the amino acid sequence of the protein during translation. Each set of three RNA nucleotides (anticodon) is recognised by a rib...
MD
Answered by Matthew D. • Biology tutor
4417 Views

How do I form the subjunctive?

The subjunctive in French can be really hard to get your head around - particularly as it's something we're not really used to in English! But luckily, forming the subjunctive is actually a really simple pro...
HW
Answered by Hannah W. • French tutor
3483 Views