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Enzymes Pt2

Unit 2: The Chemistry of Life

QuestionAnswer
Catalyzed reactions receive an ________________ to lower activation energy. enzyme
Enzymes act as ____________________________. biological catalysts
The substrate interacts with the enzyme at what location? active site
What effect does an enzyme have on activation energy needed to start a chemical reaction? lowers activation energy
What is the effect of high temperatures on enzymes? Heat causes the enzyme to denature (change shape) and no longer function.
To denature an enzyme means the enzyme loses its ___________ and can no longer ________________ reactions. shape:catalyze
Are enzymes used up in the chemical reactions they catalyze? No
Can an enzyme be reused after catalyzing a chemical reaction? Yes
What substance does an enzyme work on? Substrate/Reactants
Enzymes are an example of a ____________________ polymer/macromolecule. Protein
Enzymes are composed of _________________ monomers/building blocks. Amino acids
What is a catalyst? Anything that can speed up a chemical reaction (examples: heat, enzymes)
Amount of energy required for a chemical reaction to occur. Activation energy
Proteins that speed up chemical reactions. Enzymes
Substance formed from the substrate at the end of a chemical reaction with an enzyme Product
What are two factors/variables that can cause an enzyme to denature? Temperature and pH
Chemical reactions in your body are regulated by Enzymes
True or False: Nothing can stop an enzyme from working False (heat and pH can denature an enzyme and prevent it from working)
True or False: Overheating an enzyme can change the shape, so the active site will not fit the substrate True
True or False: If a substrate does not fit in the enzyme’s active site, the enzyme will still work. False. Enzymes are shape-specific like a lock and key
Created by: Biomonsters
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