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What are amino acids?

Amino acids are the monomers that form peptides and proteins. There are 20 different amino acids that contain an amino group (NH 2 ), carboxyl group (COOH) and R-group. The general formula is: RCH(NH 2 )COOH...
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Answered by Zoe C. • Chemistry tutor
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How is crude oil separated into fractions?

Crude oil is composed of many hydrocarbons . The crude oil is heated to evaporate it and the vapour rises. There is a temperature gradient up the column (hotter at the bottom, colder at the top). The differe...
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Answered by Daisy D. • Chemistry tutor
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How could a coach eliminate aggression in a sporting activity?

A coach could choose to either use cognitive techniques or somaic techniques. Firstly cognitive are pyschological, so are to do with thought process. For example, encouraging positive self talk. So the athle...
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What is the difference between a sprain and a strain?

A sprain is a torn ligament occuring around a joint. A common example is a sprained ankle. Where as a strain is a torn muscle or tendon. For example a pulled hamstring.
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what happens to the respiratory system when you breathe out?

When you exhale, the intercostal muscles relax. The diaphragm also relaxes and the ribs move inwards and downward. There is a decreased volume of the chest so therefore the pressure increases in the lungs. D...
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