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What is natural selection?

Natural selection is when certain characteristic are 'selected' for. Each species have simiar characteristics but differences in genes means that their characteristics can vary for example individual birds o...
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Answered by Anna M. • Biology tutor
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Explain why the first ionisation energy of sulfur is different from that of phosphorus.

The first ionisation energy is defined as, the amount of energy required to remove 1 mole of electrons from 1 mole of gaseous atoms to produce 1 mole of gaseous ions , with a single positive charge. (By dete...
LM
Answered by Lydia M. • Chemistry tutor
87565 Views

What would be the best way to structure my introduction?

The introduction is a vital part of your writing, particularly considering it is the first impression the examiner will get of your essay. Firstly, it is important to state what you will be arguing for/discu...
AA
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Explain the process of muscle contraction in a myofibril following nervous stimulation.

Muscle contraction can be explained using the 'Sliding Filament Hypothesis'. Following nervous stimulation, a nerve impulse will be transmitted to a neuromuscular junction. This will cause a release of the n...
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Answered by Lydia M. • Biology tutor
7905 Views

How do I recognise techniques and analyse them?

When given a piece of writing, always look for 'like' or 'as'. If an object, for example, a car is described to be 'like' a snail or 'as' slow as a snail, this is a simile. A simile compares something, to so...
GP
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