Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 9, Problem 9.10PS
You’ve Got Some Explaining to Do. Explain each of the following observations:
(a) In his classic studies of glucose fermentation by yeast cells, Louis Pasteur observed that the rate of glucose consumption by yeast cells was much higher under anaerobic conditions than under aerobic conditions.
(b) In 1905, Arthur Harden and William Young found that addition of inorganic phosphate to a yeast extract stimulated and prolonged the fermentation of glucose.
(c) An alligator is normally very sluggish but, if provoked, is capable of rapidly moving its legs, jaws, and tail. However, such bursts of activity must be followed by long periods of recovery.
(d) Fermentation of glucose to lactate is an energy-yielding process, although it involves no net oxidation (i.e., even though the oxidation of glyceraldehyde-3-phosphate to glycerate is accompanied by the reduction of pyruvate to lactate and no net accumulation of NADH occurs).
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Students have asked these similar questions
- Multiple Choice
- Explain your answer in 3-5 sentences.
- answer properly
QUESTION:
Which of the following takes place due to phosphorylation of isocitrate dehydrogenase?
a. Inhibits the binding of citrate at active site
b. Degrades the enzyme
c. Enhances the substrate-binding affinity
d. No reaction
BIOMOLECULES
- MULTIPLE CHOICE
- Please answer properly
QUESTION :
Supposed you want to use phosphoglucomutase to breakdown glycogen. You found out that this enzyme is responsible for converting glucose 1-phosphate (C6H13O9P) to glucose-6-phosphate (C6H13O9P). Based on this action, to which enzyme class does phosphoglucomutase belong?
A. Isomerase
B. Oxidoreductase
C. Lyase
D. Ligase
BIOMOLECULES
- Please answer the questions properly.
- Multiple choice
1. Supposed you want to use phosphoglucomutase to breakdown glycogen. You found out that this enzyme is responsible for converting glucose 1-phosphate (C6H13O9P) to glucose-6-phosphate (C6H13O9P). Based on this action, to which enzyme class does phosphoglucomutase belong?
A. Ligase
B. Isomerase
C. Oxidoreductase
D. Lyase
2. Enzymes can be regulated in a many different ways. Covalent modification is one way. Here, the functional groups are attached to or removed from the enzyme. A phosphate group is an example of a functional group that can be added to an enzyme. Depending on the enzyme, addition of a phosphate group can either increase or decrease an enzyme's activity. Evaluate the following names and identify the general name of an enzyme that functions to add phosphate groups to its substrate?
A. ligase
B. isomerase
C. phosphatase
D. kinase
Chapter 9 Solutions
Becker's World of the Cell (9th Edition)
Ch. 9 - How are catabolic and anabolic pathways similar?...Ch. 9 - Prob. 9.2CCCh. 9 - Why do oxidation and reduction reactions always...Ch. 9 - How can glucose be oxidized in the absence of...Ch. 9 - In the absence of oxygen, why is it necessary to...Ch. 9 - Prob. 9.6CCCh. 9 - Prob. 1QCh. 9 - Why dont glycolysis (glucose to pyruvate) and...Ch. 9 - Why are the key regulatory enzymes in glycolysis...Ch. 9 - Why do cancer cells carry out high rates of...
Ch. 9 - High-Energy Bonds. When first introduced by Fritz...Ch. 9 - The History of Glycolysis. Following are several...Ch. 9 - Glycolysis in 25 Words or Fewer. Complete each of...Ch. 9 - Energetics of Carbohydrate Utilization. The...Ch. 9 - QUANTITATIVE Glucose Phosphorylation. The direct...Ch. 9 - Ethanol Intoxication and Methanol Toxicity. The...Ch. 9 - Propionate Fermentation. Although lactate and...Ch. 9 - QUANTITATIVE Glycolysis and Gluconeogenesis. As...Ch. 9 - Prob. 9.9PSCh. 9 - Youve Got Some Explaining to Do. Explain each of...Ch. 9 - Arsenate Poisoning. Arsenate (HAsO42) is a potent...Ch. 9 - Life Without Phosphofructokinase. Many bacteria do...Ch. 9 - Prob. 9.13PS
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