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People with cystic fibrosis have a faulty gene which means they produce excess amounts of mucus. Lots of this mucus is produced in the airways and tends to build up in the lungs. The function of mucus is ...

The first step is to expand the brackets by multiplication. This can be done using the 'bird method'. This results in 4m – 8 = 5mt + 3tNow to collect all 'm' like terms of the equation on the LHS. This gi...

(I would usually take an example question such as: "'Alexander II's reforms were, on the whole unsuccessful,' discuss," and use it to explain.) So here, as with most exam essays, two main...

When the neuron is stimulated, it causes rapid depolarisation of the cell surface membrane. This will not generate an action potential unless it is large enough to exceed the threshold potential...