Multiple ChoiceWhich of the following statements correctly describe(s) the role or roles of heat in biological reactions?
Multiple ChoiceWhich of the following environments or actions would not affect the rate of an enzyme reaction?
Open QuestionHow does pH affect enzyme-catalyzed reactions?a. Protons serve as substrates for most reactions.b. Energy stored in protons is used to drive endergonic reactions.c. Proton concentration increases the kinetic energy of the reactants, enabling them to reach their transition state.d. The concentration of protons affects an enzyme's folded structure and reactivity.
Open QuestionWhich of the following is a false statement regarding enzymes?a. Enzymes are proteins that speed up metabolic reactions;b. Enzymes have specific substrates;c. Enzymes supply ATP to their substrates;d. An enzyme may be used many times.
Open QuestionIf an enzyme in solution is saturated with substrate, the most effective way to obtain a faster yield of products is toa. add more of the enzyme.b. heat the solution to 90°C.c. add more substrate.d. add a noncompetitive inhibitor.
Open QuestionSome bacteria are metabolically active in hot springs becausea. they are able to maintain a lower internal temperature.b. high temperatures make catalysis unnecessary.c. their enzymes have high optimal temperatures.d. their enzymes are completely insensitive to temperature.