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7 Cards in this Set
- Front
- Back
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What are enzymes made of? |
Proteins |
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Are enzymes used up in reactions? |
No |
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Enzymes have a special area called ____. This is where it binds to the _____. |
1. The active site 2. Substrate |
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Enzyme reaction rate depending on temperature |
1. As the temperature increases so does the enzyme reaction rate. 2. Optimal temperature most efficient. 3. Shape of enzymes is changing (it's denaturing) 4. The enzyme is completely denatured=shape is changed. Active site cannot bind to substrate. Enzymes do not work. *Explanation: -The warmer it is, the faster the molecules move, so there are more collisions. More chances of the active site of enzyme hitting the substrate and binding to it. |
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Enzyme reaction rate depending on pH |
- All enzyme have an optimal pH, where they work best at higher or lower pH, the enzyme begins changing shape at extreme pH's, enzyme becomes denatured and stops working. |
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What is the model of enzyme action called? |
The lock (enzyme) and key (substrate) model. |
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How can we measure enzyme activity? |
Reactant ---> Product(s) 1. Disappearance of a reactant (or substrate) 2. Colour change with an indicator/time 3. Appearance of a product gas O2 or CO2 -count bubbles -measure volume of gas -data logger to measure pressure build up/time |
