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Explain the difference between homolytic fission and heterolytic fission.

Homolytic fission: Homolytic fission occurs when the covalent bond breaks evenly , and each of the bonded atoms takes one of the shared pair of electrons from the bond. Each atom now has a single unpaired el...
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Answered by Hannah W. • Chemistry tutor
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Explain why a person who has cystic fibrosis may have more lung infections than a person who does not have cystic fibrosis

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 to ...
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Answered by Tochi D. • Biology tutor
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Rearrange the following to make 'm' the subject. 4(m - 2) = t(5m + 3)

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 gives...
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Answered by Taliesin C. • Maths tutor
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How do you structure an essay?

(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 things ...
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Answered by Daniella T. • History tutor
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Describe the generation of action potentials in neurons.

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 . If it does...
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Answered by Howard R. • Biology tutor
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