Podcast
Questions and Answers
What are enzymes?
What are enzymes?
Protein catalysts of chemical reaction
What happens to proteins at temperatures above 40℃?
What happens to proteins at temperatures above 40℃?
Denaturation
What function do oxidoreductase enzymes perform?
What function do oxidoreductase enzymes perform?
Catalyze an oxidation-reduction reaction
What is the main function of enzymes?
What is the main function of enzymes?
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Are enzymes specific for a substrate?
Are enzymes specific for a substrate?
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What is enzyme kinetics?
What is enzyme kinetics?
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What is the function of lyases enzymes?
What is the function of lyases enzymes?
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What does a high number in serum usually indicate?
What does a high number in serum usually indicate?
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What are inhibitors?
What are inhibitors?
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What function do isomerase enzymes perform?
What function do isomerase enzymes perform?
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What is sucrose?
What is sucrose?
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What function do ligases enzymes perform?
What function do ligases enzymes perform?
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What is the common carbohydrate in the body that sucrose is broken down into?
What is the common carbohydrate in the body that sucrose is broken down into?
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What is the purpose of an enzyme in breaking down sucrose?
What is the purpose of an enzyme in breaking down sucrose?
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What happens when a substrate binds to the active site?
What happens when a substrate binds to the active site?
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What happens after the formation of the enzyme-substrate complex?
What happens after the formation of the enzyme-substrate complex?
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What is released by the enzyme in the product-enzyme complex?
What is released by the enzyme in the product-enzyme complex?
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What are the two theories of enzyme action?
What are the two theories of enzyme action?
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Study Notes
Enzymes Basics
- Enzymes are biological molecules that catalyze chemical reactions in living organisms.
Enzyme Properties
- Proteins denature (unfold) at temperatures above 40°C, leading to loss of enzyme activity.
- Enzymes are highly specific for a particular substrate (substrate specificity).
Enzyme Classification
- Oxidoreductase enzymes catalyze oxidation and reduction reactions.
- Lyases enzymes cleave various chemical bonds without hydrolysis or oxidation.
- Isomerase enzymes catalyze the interconversion of isomers.
- Ligases enzymes catalyze the formation of covalent bonds between molecules.
Enzyme Function
- The main function of enzymes is to increase the rates of chemical reactions in biological systems.
- Enzyme kinetics is the study of the rates of enzyme-catalyzed reactions.
Inhibitors and Regulation
- Inhibitors are molecules that decrease enzyme activity.
- Competitive inhibitors bind to the active site, while non-competitive inhibitors bind to an allosteric site.
Carbohydrates and Sucrose
- Sucrose is a common carbohydrate that is broken down into glucose and fructose in the body.
- The purpose of an enzyme (sucrase) in breaking down sucrose is to convert it into easily absorbable sugars.
Enzyme-Substrate Complex
- When a substrate binds to the active site, an enzyme-substrate complex is formed.
- The enzyme-substrate complex then undergoes a conformational change, positioning the substrate for catalysis.
- After the reaction, the product is released, and the enzyme is regenerated from the product-enzyme complex.
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Description
Test your knowledge about enzymes with this quiz. Explore questions about the functions, properties, and effects of enzymes, including denaturation and prosthetic groups.
