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How does a nerve impulse cross a neuromuscular junction

When an action potential arrives at the junction, the depolarisation causes voltage-gated calcium channels to open resulting in the influx of calcium ions in to the pre-synaptic neurone. This triggers the...

EM
Answered by Elke M. Biology tutor
1968 Views

How should I structure a 25 marker concerning Utilitarianism?

General basis for question that could be asked: Is a right act one that maximises happiness for the greatest number?  Into: This essay shall evaluate whether Utilitarianism provides the correct account of...

EB
7828 Views

Describe and explain how the alveoli are adapted to facilitate effective gas exchange in the lungs.

The alveoli have a number of adaptations for effective gaseous exchange. Firstly, they have a very large surface area to volume ratio; the combined surface area of the alveoli is approxim...

Answered by Biology tutor
7844 Views

A car is accelerating at 2 ms^-2 along a horizontal road. It passes a point A with a velocity of 10 ms^-1 and later a point B, where AB = 50m. FInd the velocity of the car as it passes through B.

From the first look, we can see the question states the car is undergoing constant acceleration, thus we know the SUVAT equations are valid. Then reading on, we're required to find the final velocity, v, ...

Answered by Maths tutor
2662 Views

find the gradient of y=x3 X0=5

dx/dy = 3(x)2substitute x = 5so (5) squared 253 times 25 = 75

JA
Answered by Jenna A. Maths tutor
2905 Views

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