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Depending on what examination board (AQA, CIE, OCR) you do, there will be different requirements for you. However, as a general rule it is important that you try and include these things if you are looking t...

Skeletal muscle (one of the three types of muscle in our body) contracts by excitation-contraction coupling, or the sliding-filament theory. It all starts when an action potential fires along a motor neurone...

There are three main ways that an invading pathogen can result in disease: Damage or destroy host cells This is host specific and ligands on the pathogen must fit host receptor proteins on the host cell. Thi...

Mass spectrometry is a technique we use to analyse and determine the structure of compound . Generally, it works by injecting your compound into an ionisation chamber , where it breaks up into smaller fragme...

First, recall that tan(x) can be rewritten in terms of sine and cosine. tan(x) = sin(x)/cos(x) The rephrasing of our question suggests that we should try the substitution rule of integration. We should subst...