Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
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).
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Part A. If you were to expose cells that are undergoing anaerobic respiration to a radioactive carbon isotope in the form of C6H12O6C6H12O6, which of the following molecules would you not expect to be radiolabeled?
a)pyruvate
b)succinyl CoA
c)fructose-1,6-bisphosphate
d)lactate
Part b.If you were to expose cells that are undergoing aerobic respiration to a radioactive carbon isotope in the form of acetyl-CoA, which of the following molecules would you not expect to be radiolabeled?
a)oxaloacetate
b)succinyl CoA
c)pyruvate
d) CO2
In the 1860s, Louis Pasteur noticed that when headded O2 to a culture of yeast growing anaerobically onglucose, the rate of glucose consumption declined dra-matically. Explain the basis for this result, which is knownas the Pasteur effect.
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 l-phosphate
(C6H1309P) to glucose-6-phosphate (C6H1309P).
Based on this action, to which enzyme class does
phosphoglucomutase belong?
A. Isomerase
B. Oxidoreductase
C. Lyase
D. Ligase
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
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- - MULTIPLE CHOICE - Please answer properly QUESTION : 1. Which of the following statements is TRUE in the catabolism of cytidine triphosphate (CTP)? A. the final product will have the same type of nitrogen-containing ring as CTP B. the nitrogen-containing ring will be oxidized C. nitrogen will be released in the form of ammonia (ammonium ion) D. hypoxanthine will be an intermediate 2. Which of the following biomolecules is a lipid? A. all of the above B. triglycerides C. steroids D. fatty acidsarrow_forwardAbout the process of industrial production of ethanol by the yeast Saccharomyces cerevisiae, mark the correct alternatives: (a) the cells must be cultured in anaerobic conditions to activate the metabolic pathway of ethanol production (b). the presence of oxygen is required to allow regeneration of the NAD+ cofactor (c). good oxygenation of the medium is important to favor the formation of greater amounts of ATP (d).the production of ethanol is always accompanied by the formation of glycerol (e). the sugar present in the culture medium is completely oxidized to CO2 and waterarrow_forwardBIOMOLECULES - Please answer the questions properly. - Multiple choice 1. Which of the following statements is TRUE in the catabolism of cytidine triphosphate (CTP)? A. the nitrogen-containing ring will be oxidized B. nitrogen will be released in the form of ammonia (ammonium ion) C. the final product will have the same type of nitrogen-containing ring as CTP D. hypoxanthine will be an intermediate 1. A 7-year-old boy suffers from mental retardation and self-mutilation and has an increased levels of serum uric acid. These symptoms are characteristic of Lesch Nyhan syndrome, which is due to defective ________? A. Xanthine oxidase B. Denovo synthesis of pyrimidines C. HGPRT (Hypoxanthine Guanine Phospho Ribosyl Transferase) D. Salvage pathway for pyrimidine biosynthesisarrow_forward
- Hi Tutor! Can you help me explain this process of Fatty Acid Beta Oxidation? Just a simple and very comprehensive explanation. Thank you!arrow_forwardDraw the product that is immediately formed when this compound reacts under the conditions described here in your template in the box labeled Problem C2. Indicate clearly whether this compound is radiolabeled by indicating the position of the labeled atom. Cells that were actively undergoing fat catabolism were isolated and bathed in a medium containing radiolabeled (13C) bicarbonate (HCO3"). Answer the questions about this specific fat remnant under these conditions. SCOAarrow_forwardConsider the enzyme pancreatic amylase, which has an optimum pH of 7.0. How is the rate of a pancreatic amylase-catalyzed reaction affected by each of the following changes: (a) lowering the pH from 7 to 4; (b) increasing the pH from 7 to 9; (c) decreasing the temperature from 37 °C to 28 °C; (d) increasing the temperature from 37 °C to 50 °C?arrow_forward
- Describe the metabolic lifestyle for each of the following organisms. Your description should address where/how each organism (i) acquires energy (ATP &arrow_forwardTrue/false? if false, justify briefly Lipids cannot enter the Krebs cycle. They are used for membrane biosynthesis only.arrow_forward2C. A “pulse-chase" experiment using "C-labeled glucose can be carried out on a yeast extract that is maintained under strictly anaerobic conditions. The experiment consists of incubating a small amount of "C-labeled substrate (the pulse) with the yeast extract just long enough for each intermediate in the fermentation pathway to become labeled. The label is then “chased" through the pathway by the addition of excess unlabeled glucose. The chase effectively prevents any further entry of labeled glucose into the pathway. 2 ADP 2 ATP Glucose ---> CH3 2 NAD* 2 NADH 2 Pyruvate H H H-C-OH C=0 CH3 CH3 2 co, 2 Ethanol 2 Acetylaldehyde (1) If [1-"C]glucose (glucose labeled at C-1 with "C) is used as a substrate, will there be any "C in the product (ii) Lactic acid is the final fermentation product in vertebrates, while ethanol is the final fermentation product in yeast. Lactic acid can be converted back into glucose while ethanol can not be. In the space below, use a thermodynamic rationale to…arrow_forward
- 1.Why do you think glutathione occurs in a concentration as high as glucose? 2.Explain why glutathione must be transported from cytosol to mitochondria. 3.Explain why glutathione can confer therapeutic benefit when taken orally.arrow_forwardCatalase is the enzyme. experiment with h2O2 3. What is the marker for the enzyme’s optimum condition?arrow_forwardThe high rate of bacterial metabolism requires a high surface-to-volume ratio. Why does the surface/volume ratio affect the maximum metabolic rate? 2) Calculate the surface-to-volume ratio of the spherical Neisseria gonorhoe bacterium (0.5 µm in diameter). Compare this with the surface-to-volume ratio of the large eukaryote ameba (150 mm in diameter). 3) An enzyme isolated from rat liver has 193 amino acids and is encoded by a 1440 base pair long gene. Explain the connection between the amino acid number of the enzyme and the number of nucleotide pairs in its gene.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
Endosymbiotic Theory; Author: Amoeba Sisters;https://www.youtube.com/watch?v=FGnS-Xk0ZqU;License: Standard Youtube License