Online quiz 4

Online quiz 4 - 89.74 Has less energy than before its...

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Online quiz 4. (Correct answers are highlighted) Question 1. If an enzyme solution is saturated with substrate, the most effective way to obtain a faster yield of products is to (Answer: add more of the enzyme (A)) Answer Student response (%) Add more of the enzyme 93.91% Heat the solution to 90 °C 0.96% Add more substrate 4.81% Add an allosteric inhibitor 0.32% Add a noncompetitive inhibitor 0% Question 2. Which of the following are chemical messengers that pass through the plasma membrane of cells and have receptor molecules in the cytoplasm? (Answer: 7 kcal/mole (D)) Answer Student response (%) 3 kcal/mole 23.08% -4 kcal/mole 2.24% 5 kcal/mole 3.85% 7 kcal/mole 67.63% 9 kcal/mole 3.21% Question 3. A molecule that is phosphorylated (Answer: has increased chemical reactivity, primed to do cellular work (A)) Answer Student response (%) Has an increased chemical reactivity; it is primed to do cellular work.
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Unformatted text preview: 89.74% Has less energy than before its phosphorylation and therefore less energy for cellular work. 1.28% Reduced as a result of a redox reaction involving the loss of an inorganic phosphate. 0.64% Has a decreased chemical reactivity; it is less likely to provide energy for cellular work 0.96% Has been oxidized as a result of a redox reaction involving the gain of an inorganic phosphate. 7.37% Question 4. An electron loses potential energy when it (Answer: shifts to more electronegative atom (A)) Answer Student response (%) Shifts to a more electronegative atom. 72.76% Shifts to a less electronegative atom. 4.17% Increases its kinetic energy. 20.19% Increases its activity as an oxidizing agent. 0.96% Attaches itself to NAD+. 0%...
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Online quiz 4 - 89.74 Has less energy than before its...

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