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Questions and Answers
Which type of enzyme is involved when molecular oxygen acts as an acceptor of hydrogen or electrons?
Which type of enzyme is involved when molecular oxygen acts as an acceptor of hydrogen or electrons?
- Hydroxylases
- Oxidases (correct)
- Peroxidases
- Dehydrogenases
Which type of enzyme oxidizes a substrate by transferring hydrogen to an acceptor that is either NAD+ or NADP+?
Which type of enzyme oxidizes a substrate by transferring hydrogen to an acceptor that is either NAD+ or NADP+?
- Dehydrogenases (correct)
- Reductases
- Oxygenases
- Oxidases
What type of reactions do oxidoreductases perform?
What type of reactions do oxidoreductases perform?
- Hydrolysis reactions
- Reduction-oxidation reactions (correct)
- Addition reactions
- Decarboxylation reactions
Which enzyme is involved in transferring oxygen to a substrate?
Which enzyme is involved in transferring oxygen to a substrate?
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Study Notes
Enzyme Types and Functions
- Oxidases: Enzymes that catalyze reactions where molecular oxygen acts as an electron or hydrogen acceptor, facilitating oxidation processes.
- Dehydrogenases: Enzymes that oxidize substrates by transferring hydrogen ions (H+) or electrons to acceptors like NAD+ or NADP+, playing a crucial role in cellular respiration and metabolism.
- Oxidoreductases: A broad class of enzymes that perform oxidation-reduction (redox) reactions, transferring electrons or hydrogen from one molecule (the reductant) to another (the oxidant).
- Oxygenases: Enzymes that introduce oxygen into organic substrates during the catalytic process, often involved in the metabolism of various compounds.
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