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There are 4 levels you use to describe protein structure. Primary Structure - This is the simplest structure of a protein. It is essentially the sequence of amino acids that form a protein. Secondary Structu...

It is important to first point out the sides of the argument. There are those who believe that it was part of the rectification policy of the CCP. Mao was keen to maintain close to the subjects and not estab...

To maximise your marks and get your point across quickly but effectively in an English essay, you should follow this simple rule for each paragraph: P.E.E. 1. Point – this is essentially a topic sentence and...

Electrophilic aromatic substitution ( S E Ar ) is an organic reaction in which an atom that is attached to an aromatic system (usually hydrogen) is replaced by an electrophile. An electrophile is reagent tha...

An Atom is made up of 3 parts, protons, neutrons and electrons . Each element has it's own number of protons and electrons which will always be the same number . The protons and neutrons make up the nucleus ...