Item: Statement: a) Active site b) Induced fit c) Enzymes d) Enzyme-substrate complex 1. Decreases the energy of activation 2. Enzyme changes shape to better accommodate the substrate 3. An enzyme with its substrate attached to the active site 4. The location where the substrate binds to an enzyme
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- How can a noncompetitive inhibitor affect enzymeactivity without binding to the active site?a. It binds to another location on the enzyme, altering the active site shape.b. It physically blocks the entrance to the active site.c. It alters the shape of the substrate, making it difficult for it to bind to theactive site.d. It degrades the substrate.Why does the consumption of excessive amounts of vitamins D and A cause adverse health effects, whereas consumption of vitamin C well in excess of the recommended daily allowance generally does not lead to toxicity?1.A student was given two test tubes. One tube contains a reaction catalyzed by an inorganic catalyst, while the second tube contains a reaction catalyzed by an enzyme which is protein in nature. Give two laboratory procedures which you can perform to differentiate which of the two tubes contain an enzyme-catalyzed reaction. 2. List the enzymes whose levels are elevated in blood serum as a result of hepatitis or cirrhosis of the liver.
- What are the key components in enzyme structures and functions that make them responsible for resistance to antibiotics?Which of the following is an appropriate definition of zymogen? a) An inactive enzyme precursor b) A digestive enzyme c) A protease d) All of the aboveWhy can we say that having a pure noncompetitive inhibitor present is similar to just having less enzyme present?
- Why are irreversible enzyme inhibitors referred to as poisons?Inhibitor X exerts which of the following effects on the above enzyme (maltase)? (inhibitor X changes maltase activity to a V o of 0.10 mM per minute when [S] = 0.125 mM, and a V o of 0.25 mM per minute when [S] = 0.50 mM)Item22 Item 22 The region of an enzyme into which the substrate fits is a Multiple Choice one-size-fits-all active site. highly specific active site. highly specific antibody. one-size-fits-all antibody. 23 Item 23 Which enzyme class splits a chemical bond in the absence of water? Multiple Choice Ligase Oxidoreductase Lyase Hydrolase Dehydrogenase 24 Item 24 Extremely high temperatures break intramolecular interactions and _________ an enzyme, resulting in a loss of its function. Fill in the blank Item25 Item 25 Enzymes that remove phosphate groups from their substrates are called __________. Fill in the blank Item26 Item 26 The optimal pH range for the stomach enzyme pepsin is Multiple Choice 2–4. 6–8. 7.3–7.4. 10–12. 12.0–13.5. Item27 Item 27 Allosteric inhibitors are also called noncompetitive…
- What is enzyme specificity?Can same enzyme have different kinetics for different substrates? What is the biological significance that?In noncompetitive inhibition, can both the substrate and the inhibitor bind at the same time? I know the inhibitor changes the enzyme's conformation so it would lower the product formation, but what if the substrate were to bind first, and then the inhibitor binded afterwards?