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How do synapses work?

When an action potential reaches a presynaptic cell, it causes voltage-gated ion channels in the membrane to open, which allows Ca2+ to enter the cell. This Ca2+ diffuses into the cell from high to low conce...
SB
Answered by Sam B. • Biology tutor
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f(x)=ln(3x+1), x>0 and g(x)=d/dx(f(x)), x>0, find expressions for f^-1 and g

f^-1(x)=(e^x-1)/3 g(x)=3/(3x+1)
GK
Answered by George K. • Maths tutor
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What are river cliffs and how are they formed?

River cliffs are features of meanders. In a meander the outside bank is where the Thalweg flows(fastest flowing part of the river), this means the velocity is greatest here so there is more available energy ...
KD
Answered by Kitty D. • Geography tutor
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What is the conditional perfect, and how do you use it?

The conditional perfect, also called the past conditional ( conditionnel passé ), is used to express what would have happened. To form the conditional perfect, use the conditional of avoir or être , plus a p...
EI
Answered by Ellen I. • French tutor
20627 Views

explain what an enantiomer is

an enantiomer is two molecules that are mirror images of each other, the best way to visualise it is to draw the molecule in a tetrahedral shape around the central carbon atom, then draw a line down the page...
MT
Answered by Max T. • Chemistry tutor
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