Multiple Choice
Which of the following environments or actions would not affect the rate of an enzyme reaction?
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3. Energy & Cell Processes
Enzymes
Back3. Energy & Cell Processes
Enzymes
- Multiple ChoiceEnzyme activity is affected by pH because __________.2154views1rank
- Textbook QuestionAdd labels to the figure that follows, which illustrates the breakdown of a disaccharide inside a cell.1229views
- Textbook 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.1718views
- Textbook 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.2683views
- Textbook 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.2651views
- Textbook QuestionEnzymes usually function best at an optimal pH and temperature. The following graph shows the effectiveness of two enzymes at various temperatures.(c) From what you know about enzyme structure, explain why the rate of the reaction catalyzed by enzyme A slows down at temperatures above 40°C (140°F).1722views
- Textbook QuestionEnzymes usually function best at an optimal pH and temperature. The following graph shows the effectiveness of two enzymes at various temperatures.(b) One of these enzymes is found in humans and the other in thermophilic (heat-loving) bacteria. Which enzyme would you predict comes from which organism?1985views
- Textbook QuestionEnzymes usually function best at an optimal pH and temperature. The following graph shows the effectiveness of two enzymes at various temperatures. (a) At which temperature does enzyme A perform best? Enzyme B?1992views
- Textbook Question
Some antibiotics act by binding to certain essential enzymes in the target bacteria.
a. How might these antibiotics influence the chemical reactions controlled by the enzymes?
b. What is the anticipated effect on the bacteria? On the person taking the antibiotic prescription?
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Special catalytic molecules called___speed up chemical reactions in the human body.
(a) enzymes
(b) cytozymes
(c) cofactors
(d) activators
(e) cytochromes
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Explain how enzymes function in chemical reactions.
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A certain reaction pathway consists of four steps. How would decreasing the amount of enzyme that catalyzes the second step affect the amount of product produced at the end of the pathway?
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