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Proteins have many functions, both inside and
outside of the cells of living organisms.
Proteins, as enzymes are widely used in the
home and in industry.…read more

Slide 2

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Protein molecules are made up of long
chains of amino acids. These long
chains are folded to produce a specific
shape, that enables other molecules to
fit into the protein.
Proteins act as:
· Structural components like muscles
· Hormones
· Antibodies
· catalysts…read more

Slide 3

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What is an enzyme?
An enzyme is a biological catalyst.
It is also a protein.
Catalysts increase the rate of reactions.…read more

Slide 4

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What will affect an enzyme?
High temperatures and wrong PH will change
the shape of an enzyme, known as "denaturing"
it. An enzymes shape is specific to it's function,
so it will no longer be of use when it denatures.
Optimum PH and temperature will increase the
rate of a reaction, and will not denature the
enzyme.…read more

Slide 5

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What do enzymes do in the body?
Some enzymes work outside the body cells.
Digestive enzymes work inside the body, they
are produces by specialist cells in the gut. The
enzymes produced in the glands are released
into the gut where they come into contact with
food molecules. These biological enzymes
catalyse the breakdown of large food molecules
into smaller molecules.…read more

Slide 6

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· Amylase breaks down starch into sugars.
­ Produced in salivary glands, pancreas and small intestine
· Protease breaks down protein into amino acids
­ Produced in stomach, pancreas and small intestine
· Lipase breaks down lipids into fatty acids and glycerol
­ Produces in the pancreas and the small intestine
· The stomach produces HCL to provide the best conditions
for these enzymes to work effectively
· The liver produces bile to neutralise these acids from the
stomach and provide the right alkaline conditions for the
enzymes in the small intestine.…read more

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