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Questions and Answers
Which of the following is true about enzymes?
Which of the following is true about enzymes?
- Enzymes have a secondary structure
- Enzymes are proteins that act as catalysts (correct)
- Enzymes are made up of RNA molecules
- Enzymes convert products into substrates
What is the function of the active site on an enzyme?
What is the function of the active site on an enzyme?
- To weaken bonds and lower activation energy (correct)
- To determine the shape of the enzyme
- To identify reacting substances
- To convert substrates into products
What is the role of enzymes in chemical reactions?
What is the role of enzymes in chemical reactions?
- To produce end products (correct)
- To identify reacting substances
- To determine the shape of the enzyme
- To convert products into substrates
What is the common ending for the names of enzymes?
What is the common ending for the names of enzymes?
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Which of the following is true about the 'Lock & Key model' of enzyme action?
Which of the following is true about the 'Lock & Key model' of enzyme action?
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Study Notes
Enzymes
- Enzymes are biological molecules, typically proteins, that speed up chemical reactions
- Enzymes are highly specific, meaning each enzyme only catalyzes one specific reaction or a small group of closely related reactions
Active Site
- The active site is the region on an enzyme where the substrate binds
- The active site is shaped in such a way that it allows only specific substrates to bind, ensuring the enzyme's specificity
Role in Chemical Reactions
- Enzymes act as biological catalysts, increasing the rates of chemical reactions
- Enzymes do not alter the equilibrium of a reaction, but rather allow it to reach equilibrium faster
- Enzymes can operate under mild conditions, such as temperatures and pH ranges, found in living organisms
Naming of Enzymes
- The common ending for the names of enzymes is "-ase"
Lock & Key Model
- The Lock & Key model describes the binding of a substrate to an enzyme's active site
- According to this model, the shape of the active site is complementary to the shape of the substrate, ensuring specific binding
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