Gcse Biology Enzyme Coursework

Gcse Biology Enzyme Coursework-71
This process involves keeping barley grains moist and warm to start them germinating.This activates enzymes in the grain which turn insoluble starch into soluble sugar. Hot water is added to the barley and the enzyme activity continues in the malted barley grains and the sugars dissolve in the hot water making it sweet (and smell delicious).It can change the shape of the active site so the substrate is not able to bond with it.

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Changing the p H of an enzyme solution will alter the ionisation of the R groups in amino acids (amino acids polymerise to form enzymes).

These ionisation changes may affect attraction / repulsion between different amino acids, and therefore, may change their arrangement in space.

They respire anaerobically, converting sugar into alcohol and carbon dioxide.

A few weeks later, the liquid is much less sweet, still hoppy, a little alcoholic and slightly fizzy: beer!

The hot, sweet water is then boiled, which destroys the enzymes – they denature at high temperatures.

Enzymes are made of protein folded into a globular shape.

The raw ingredients for cheese are milk, salt, a starter culture of bacteria and rennet which contains an enzyme.

Milk is sterilized by heating and the starter culture of bacteria is added once the milk has cooled.

Heat energy causes their structure to break down, and means they can no longer carry out their chemical reaction.

During the boil, hops are added which give flavour and act to preserve the beer.

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