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Questions and Answers
What type of enzyme acts as a hydrogen donor during the oxidation of a substrate?
What type of enzyme acts as a hydrogen donor during the oxidation of a substrate?
- Ligase
- Transferase
- Lyase
- Oxidoreductase (correct)
Which enzyme type is responsible for the transfer of functional groups?
Which enzyme type is responsible for the transfer of functional groups?
- Hydrolase
- Lyase
- Transferase (correct)
- Isomerase
What reaction does a hydrolase facilitate?
What reaction does a hydrolase facilitate?
- Isomerization
- Hydrolysis (correct)
- Oxidation-reduction
- Synthetic reactions
Which enzyme type utilizes ATP to join two molecules?
Which enzyme type utilizes ATP to join two molecules?
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Which of the following enzyme types is involved in isomerization reactions?
Which of the following enzyme types is involved in isomerization reactions?
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Study Notes
Enzyme Types
- Enzymes are biological catalysts that accelerate chemical reactions
- Six major classes of enzymes: Oxidoreductases, Transferases, Hydrolases, Lyases, Isomerases, Ligases
- Oxidoreductases catalyze oxidation-reduction reactions
- Involve the transfer of hydrogen atoms
- Dehydrogenases or reductases act as hydrogen donors in oxidation reactions
- Oxidases accept oxygen atoms
- Alcohol dehydrogenase is an example of an oxidoreductase
- Transferases catalyze the transfer of functional groups
- Hexokinase is an example of a transferase
- Hydrolases catalyze hydrolysis reactions
- Break bonds by adding water
- Lipase is an example of a hydrolase
- Lyases specialize in the addition or removal of water, ammonia, or carbon dioxide
- Pyruvate decarboxylase is an example of a lyase
- Isomerases catalyze isomerization reactions
- Move functional groups within the same molecule
- Resulting molecule is an isomer of the original molecule
- Retinol isomerase is an example of an isomerase
- Ligases catalyze synthetic reactions (joining two molecules)
- Require ATP
- Succinate Thiokinase is an example of a ligase
- Not all enzymes are proteins. Some are RNA molecules.
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Description
Test your knowledge on the six major classes of enzymes, their functions, and examples. This quiz covers Oxidoreductases, Transferases, Hydrolases, Lyases, Isomerases, and Ligases. Perfect for biology students seeking to reinforce their understanding of enzymatic processes.
