Top answers

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
3552 Views

Rearrange v = u + at to make t the subject of the formula

t = (v - u) / a
GK
Answered by George K. • Maths tutor
35070 Views

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
4620 Views

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
42178 Views

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
20365 Views