Briefly describe how enzymes are named. What is generally used for the root of the name, and what is generally used as the suffix? Provide one example.
What will be an ideal response?
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Question 2) Which enzyme class splits a chemical bond in the absence of water?
A. Ligase
B. Oxidoreductase
C. Lyase
D. Hydrolase
E. Dehydrogenase
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Question 3) Which enzyme class transfers electrons from one substance to another?
A. Oxidoreductase
B. Transferase
C. Isomerase
D. Ligase
E. Electin
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Question 4) Cofactors are generally proteins.
Indicate whether this statement is true or false.
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Question 5) Organic cofactors are referred to as _________.
Fill in the blank with correct word.
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Question 6) In performing its enzymatic function, carbonic anhydrase
A. requires the inorganic coenzyme zinc.
B. requires the organic coenzyme carbon dioxide.
C. is facilitated by the inorganic coenzyme NAD+.
D. is facilitated by the organic coenzyme zinc.
E. requires the inorganic coenzyme NADPH.
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Question 7) In the final step of enzymatic catalysis,
A. the substrate is released and the enzyme is inactivated.
B. the product is completed and the enzyme is inactivated.
C. the products are released and the enzyme is free to bind other substrates.
D. the enzyme and substrate form chemical bonds with each other resulting in a new product.
E. equilibrium is obtained so that the enzyme does not catalyze further reactions.
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Question 8) When an enzyme's conformational change results in the enzyme hugging the substrate in its active site, the action is referred to as the __________ model of enzyme function.
Fill in the blank with correct word.
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Question 9) When an enzyme catalyzing a catabolic reaction changes conformation to an induced fit with the substrate,
A. it strengthens the chemical bonds in the enzyme so that it remains perpetually active.
B. it stresses chemical bonds in the substrate, making it easier to break them.
C. it strengthens chemical bonds in the substrate so that cofactors can act on it.
D. it stresses chemical bonds in the enzyme so that the enzyme breaks into two catalytic subunits.
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Question 10) The enzyme DNA polymerase is synthesized
A. at a ribosome, and it remains within the cell.
B. at the rough endoplasmic reticulum, and it is secreted from the cell.
C. at the Golgi apparatus, and it is embedded in the cell membrane.
D. in the nucleus, and it is converted to RNA for export outside the cell.
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