Enzymes and Metabolic Reactions
Learning Objective
Enzymes speed up metabolic reactions by lowering energy barriers; and regulation of enzyme activity helps control metabolism
Key Concepts
Enzymes are chemicals that speed up a reaction, but are not consumed in the reaction.
An enzyme's active site is where the substrate binds, allowing a chemical tug that lowers activation energy.
Competitive inhibition is when a chemical blocks the active site, while allosteric inhibition changes the enzyme's shape.
Practice Questions
This lesson includes 12 practice questions to reinforce learning.
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1. What is the role of an enzyme in a chemical reaction?
2. Explain the 'lock and key' analogy in the context of enzyme-substrate interaction.
3. What is the active site of an enzyme, and why is it important?
...and 9 more questions
Educational Video
Enzymes
Bozeman Science