Nester's Microbiology: A Human Perspective
9th Edition
ISBN: 9781259709999
Author: Denise G. Anderson Lecturer, Sarah Salm, Deborah Allen
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 6, Problem 3MC
Based on the name, NADH dehydrogenase is
a) a vitamin that oxidizes NADH.
b) a vitamin that reduces NADH.
c) a vitamin that produces NADH.
d) an enzyme that oxidizes NADH.
e) an enzyme that reduces NADH.
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During the metabolism of glucose in anaerobic cells, the enzyme lactate
dehydrogenase is essential to allow glycolysis to continue. This enzyme catalyzes the
reduction of pyruvate to lactate. Why is this so essential?
OA) It lowers the pH.
B) It re-oxidizes NADH to NAD+.
C) Lactate stimulates hexokinase activity.
D) Pyruvate inhibits pyruvate kinase.
Which of the following statements is correct?
A) NAD+ is reduced to NADH during glycolysis, pyruvate oxidation, and the citric acid cycle.
B) NAD+ has more chemical energy than NADH.
C) NAD+ is oxidized by the action of hydrogenases.
D) NAD+ can donate electrons for use in oxidative phosphorylation.
E) NAD+ is reduced during fermentation in order for glycolysis to continue.
Which of the following statements is/are CORRECT?
OA) Phosphoenolpyruvate carboxykinase is inhibited by ADP.
B) Pyruvate carboxylase is inhibited by ADP.
C) Fructose-1,6-bisphosphatase is inhibited by ADP.
OD) A and B.
OE) B and C.
4
Chapter 6 Solutions
Nester's Microbiology: A Human Perspective
Ch. 6 - Explain the difference between catabolism and...Ch. 6 - How does ATP serve as a carrier of free energy?Ch. 6 -
3. How do enzymes catalyze chemical reactions?
Ch. 6 - Explain how precursor molecules are involved in...Ch. 6 -
5. How do cells regulate enzyme activity?
Ch. 6 - Why do the electrons carried by FADH2 result in...Ch. 6 -
7. Name three food products produced with the aid...Ch. 6 - In photosynthesis, what is encompassed by the term...Ch. 6 - Unlike the cyanobacteria, the anoxygenic...Ch. 6 - What is the role of transamination in amino acid...
Ch. 6 - Which of these factors do does not affect enzyme...Ch. 6 - Which of the following statements is false?...Ch. 6 - Based on the name, NADH dehydrogenase is a) a...Ch. 6 - What is the end product of glycolysis? a) Glucose...Ch. 6 -
5. The central metabolic pathway(s) is/are
a)...Ch. 6 - Which of these pathways gives a cell the potential...Ch. 6 - In fermentation, the terminal electron acceptor is...Ch. 6 -
8. In the process of oxidative phosphorylation,...Ch. 6 - If a bacterium loses the ability to produce FADH2,...Ch. 6 - Degradation of fats as an energy source involves...Ch. 6 -
1. A worker in a cheese-making facility argues...Ch. 6 -
2. Scientists working with DNA in vitro often...Ch. 6 -
1. A student argued that aerobic and anaerobic...Ch. 6 - Chemolithotrophs near hydrothermal vents support a...
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