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Transcript of Enzymes summary
- speed up reactions
- are proteins Enzymes work best at a particular
pH. Revision Enzymes Reaction
site substrate fits
into active site enzyme substrate Enzyme remains
unchanged products Lock and key Enzymes do not work at temperatures above 60 oC
High temperature changes the shape of the enzyme’s active site, and the substrate no longer fits.
The enzyme is said to be denatured. Enzymes act on only one type of substrate.
They are SPECIFIC. Protein protease amino acids Lipid
(fat) lipase fatty acids carbohydrate glucose carbohydrase amylase stomach small
intestine mouth enzyme bead of gel pore in gel Immoblising enzymes means trapping them inside a porous gel Immobilising enzymes Why must the gel be porous? This makes the enzyme more stable.
They are not as easily denatured.
They can be used in industry