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13 Cards in this Set
- Front
- Back
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How does more kinetic energy increase the chances of a chemical reaction occurring? |
Because the faster the molecules are moving the more collisions causing more reactions. |
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What is a catalyst? |
A substance capable of initiating or speeding up a chemical reaction but remains unchanged. |
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What is a enzyme? |
protein catalysts that regulate reactions. Permit low temperature reactions by reducing activation energy. |
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What is activation energy? |
The energy needed in order for a chemical reaction to occur. |
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What are three examples of enzymes? |
Lactase, Protease, Lipase |
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What is a substrate? |
the molecule on which the enzyme works |
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What are cofactors? |
In-organic helper molecules
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What are coenzymes? |
Organic helper molecules |
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How do low and high temperatures effect enzyme activity? |
Low temperatures causes the enzyme to not be flexible enough. High temperatures causes the bonds to be to weak to maintain the shape. |
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What are competitive inhibitors? |
molecules with similar shapes to substrates that compete for the enzyme. |
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Non-competitive inhibitor |
Attach elsewhere changing the shape of the enzyme. This stops the substrate from being able to bond with the enzyme |
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Feedback Inhibition |
Where the final product in a metabolic pathway inhibits the first enzyme essentially turning off the metabolic pathway. |
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Precursor Activity |
the activation of the last enzyme in a metabolic pathway by initial reaction. turns the enzyme on. |
