I'm aiming to work out the temperature which stops catalysts in the enzymes breaking down substances.

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Gemma Sainsbury

Biology Coursework:

                                Enzymes

Testing temperature on the effectiveness of enzymes

Aim:

 I’m aiming to work out the temperature which stops catalysts in the enzymes breaking down substances.

Hypothesis:

        I predict that temperature will have an effect on the effectiveness of the enzymes. I predict that to higher the temperature, the more likely the enzyme catalysts will stop breaking down the other substances.

Background Information:

        There are two types of enzymes:

Catabolic – Breakdown             These are organic catalysis

Anabolic – Build up                    that speed up the reaction

                                               without being broken down.

Other enzymes include the digestive enzymes. There are three main types of digestive enzymes are:

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Lipase which converts fats into fatty acids and glycerol.

Amylase which converts starch/carbohydrates into glucose.

Protease which converts proteins into amino acids.

There are two tests which you can perform to test for enzymes. These are the Benedicts’ test which tests for sugars and the Iodine test which tests for starch.

        Enzymes are biological catalysts which control chemical reactions. Enzymes are shaped like proteins. The shape is held together by weak hydrogen bonds which can be disrupted by heat and pH specifics (breakdowns in different pHs). They also have a specific ‘Active Site.’

        Heat, the surface area and the concentration can affect ...

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