1787228
Description
Flashcards by melhillrocks, updated more than 1 year ago
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Created by melhillrocks
about 11 years ago
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| Question | Answer |
| What's a catalyst? | A substance that SPEEDS UP the rate of reaction, without being used up itself |
| What are enzymes made of? | PROTEINS made up from long chains of AMINO ACIDS |
| What type of catalysts are enzymes? | BIOLOGICAL catalysts |
| What is the active site? | The special sit win the enzyme's structure where the substrate fits/binds |
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What is this model referred to as & what does it show?
Image:
image071.gif (image/gif)
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The lock and key model - shows how enzymes work |
| What is denaturisation? | When the enzyme molecule 'unravels' and the active site changes shape |
| What is the effect of denaturisation on an enzyme? | The enzyme can no longer act as a catalyst |
| What's the enzyme-substance complex? | The enzyme and substrate bound together |
| What is activation energy? | The energy needed for a reaction to take place |
| What is a substrate? | A molecule that's complementary in shape to the active site of the enzyme |
| What's formed in the reaction between the enzyme and substrate? | Product |
| What are enzymes? | Biological catalysts which speed up chemical reactions |
| What do enzymes do? | They lower activation energy needed for a reaction to take place |
| What is the optimum temperature? | The temperate at which the reaction works as fast as possible |
| What does amylase break down? | Carbohydrates to SUGARS |
| What do proteases break down? | Proteins |
| What are proteins digested into & where? | AMINO ACIDS in the stomach and small intestine |
| What are Lipids digested into? | Fatty acids & Glycerol |
| What are Lipids digested by? | Lipase enzymes |
| Where are Lipase enzymes produced? | The pancreas & small intestine |
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