Which of the following statements are true of enzymes?SELECT ALL THAT APPLYEnzymes are permanently changed in a reaction.Enzymes are involved in catabolism but not in anabolism.Enzymes produce specific products from specific substrates.Enzymes provide a route from reactants to products that has a lower activation energy.Enzymes can be regulated to control cellular metabolism.All enzymes require cofactors for activity.
Question
Which of the following statements are true of enzymes?SELECT ALL THAT APPLYEnzymes are permanently changed in a reaction.Enzymes are involved in catabolism but not in anabolism.Enzymes produce specific products from specific substrates.Enzymes provide a route from reactants to products that has a lower activation energy.Enzymes can be regulated to control cellular metabolism.All enzymes require cofactors for activity.
Solution
The following statements are true of enzymes:
- Enzymes produce specific products from specific substrates.
- Enzymes provide a route from reactants to products that has a lower activation energy.
- Enzymes can be regulated to control cellular metabolism.
The following statements are not true of enzymes:
- Enzymes are permanently changed in a reaction. This is not true because enzymes are not consumed in the reactions they catalyze and can be used repeatedly.
- Enzymes are involved in catabolism but not in anabolism. This is not true because enzymes are involved in both catabolism (breaking down molecules) and anabolism (building up molecules).
- All enzymes require cofactors for activity. This is not true because while many enzymes require cofactors for activity, not all do. Some enzymes are able to catalyze reactions without the need for additional components.
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