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In the Loop of Henle. Here a salt gradient is established as the loop of Henle is permeable to both water and salts such as sodium.

Neither diffusion or osmosis require an input of energy and result from molecules moving from an area of high concentration to low concentration. This is movement down the concentration gradient.All gasse...

The general equation for a circle is as follows:(x-a)^2+(y-b)^2=r^2where (a,b) are the coordinates of the centre of the circle and r is the radius of the circle.x^2+y^2-4x-8y+11=0In this case, group all x...

At the axon terminal of a motor neurone, an action potential arrives and triggers an influx of calcium ions. These calcium ions cause vesicles containing Acetylcholine (a neurotransmitter that works on ch...

According to the spec. You must note that Description (A01) is worth less than Evaluation (A03). Therefore you should try to divide up the proposed points with that in mind. (2 Marks for Describe and 4 fo...