Campbell Biology - Modified Mstingbiology
10th Edition
ISBN: 9780321935311
Author: Reece
Publisher: PEARSON
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Chapter 9, Problem 10TYU
INTERPRET THE DATA Phosphofructokinase is an enzyme that acts on fructose 6-phosphate at an early step in glucose breakdown. Regulation of this enzyme controls whether the sugar will continue on in the glycolytic pathway. Considering this graph, under which condition is phosphofructokinase more active? Given what you know about glycolysis and regulation of
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Which of the following statements is a lie?Select one:a.Specific enzymes in the electron transport chain are unaffected by feedback inhibition.b.Elevated levels of ADP will increase pathway activity in the electron transport chain.c.The rate of transport of electrons through the electron transport chain is regulated by feedback inhibition.
Imagine a scenario in which a cell has no oxygen and pyruvate is absent, and therefore, NADH can't transfer hydrogens back to pyruvate. What will happen to glycolysis? Explain your answer.
The oxygen (O2) consumed during aerobic cellular respiration is involved directly in which process or event?
A) the phosphorylation of ADP to form ATP
B)accepting electrons at the end of the electron transport chain
C)glycolysis
D)the oxidation of pyruvate to acetyl-CoA
E)the citric acid cycle
12.
Chapter 9 Solutions
Campbell Biology - Modified Mstingbiology
Ch. 9.1 - Prob. 1CCCh. 9.1 - WHAT IF? If the following redox reaction...Ch. 9.2 - VISUAL SKILLS During the redox reaction in...Ch. 9.3 - Prob. 1CCCh. 9.3 - What process in your cells produce the CO2 that...Ch. 9.3 - VISUAL SKILLS The conversions shown in Figure...Ch. 9.4 - WHAT IF? What effect would an absence of O2 have...Ch. 9.4 - WHAT IF? In the absence of O2 as in question 1,...Ch. 9.4 - MAKE CONNECTIONS Membranes must be fluid to...Ch. 9.5 - Consider the NADH formed during glycolysis. What...
Ch. 9.5 - WHAT IF? A glucose-fed yeast cell is moved from...Ch. 9.6 - MAKE CONNECTIONS Compare the structure of a fat...Ch. 9.6 - Prob. 2CCCh. 9.6 - Prob. 3CCCh. 9.6 - VISUAL SKILLS During intense exercise, can a...Ch. 9 - Describe the difference between the two processes...Ch. 9 - Which reactions in glycolysis are the source of...Ch. 9 - What molecular products indicate the complete...Ch. 9 - Briefly explain the mechanism by which ATP...Ch. 9 - Prob. 9.5CRCh. 9 - Prob. 9.6CRCh. 9 - Level 1: Knowledge/Comprehension 1. The immediate...Ch. 9 - Prob. 2TYUCh. 9 - 3. The final electron acceptor of the electron...Ch. 9 - Prob. 4TYUCh. 9 - What is the oxidizing agent in the following...Ch. 9 - When electrons flow along the electron transport...Ch. 9 - Prob. 7TYUCh. 9 - Prob. 8TYUCh. 9 - MAKE CONNECTIONS The proton pump shown in Figures...Ch. 9 - INTERPRET THE DATA Phosphofructokinase is an...Ch. 9 - DRAW IT The graph here shows the pH difference...Ch. 9 - EVOLUTION CONNECTION AIP synthases are found in...Ch. 9 - SCIENTIFIC INQUIRY In the 1930s, some physicians...Ch. 9 - WRITE ABOUT A THEME: ORGANIZATION In a short essay...Ch. 9 - SYNTHESIZE YOUR KNOWLEDGE Coenzyme Q (CoQ) is sold...
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- Which stage of cellular respiration DOES NOT produce NADH? A. oxidative phosphorylation B. pyruvate oxidation C. glycolysis D. Krebs cyclearrow_forwardIndicate what step each of the events in the glycolysis pathway the following takes place: a. First phosphorylation of ADP occurs b. First “energy-rich” compound is producedarrow_forwardShow how the pentose phosphate pathway, which is connected to the glycolytic pathway, can do the following. (a) Make both NADPH and pentose phosphates, in roughly equal amounts (b) Make mostly or only NADPH (c) Make mostly or only pentose phosphatesarrow_forward
- Glucose is converted to pyruvate in which stage of cellular respiration? a. glycolysis b. intermediate stage c. citric acid cycle d. electron transport systemarrow_forwardShow a diagram of electron transport chain in cellular respiration and highlight that phase in the diagram where oxygen plays an important role. Briefly describe that role of oxygen in respiration.arrow_forwardTrace the fate of hydrogens removed from glucose during glycolysis when oxygen is present in muscle cells; compare this to the fate of hydrogens removed from glucose when the amount of available oxygen is insufficient to support aerobic respiration.arrow_forward
- What is the importance of fermentation to cellular metabolism? a. It generates glucose for the cell in the absence of O2. b. It oxidizes NADH to NAD+ during electron transport. c. It oxidizes NADH to NAD+ in the absence of O2. d. It reduces NADH to NAD+ in the absence of O2.arrow_forwardExplain why a drug that inhibits NADH production would be deadly to an organism that undergo aerobic cellular respiration.arrow_forwardA scientist is studying the catabolism of glucose in a particular strain of bacteria. Normally, that species of bacteria produces 10 NADH, 2 FADH2, and 4 ATP from the theoretical net yield of a single glucose molecule. They calculates that the theoretical net yield is only 2 ATP and 4 NADH in this strain. Provide an explanation for what is happening and why. Use the different parts of cellular respiration in all parts of your explanation.arrow_forward
- Indicate at what step in the glycolysis pathway each of the following events occur: a. Second formation of ATP occurs b. Second “energy-rich” compound is produced c. Second time ATP is converted to ADP d. A hydration reaction occursarrow_forward(Biochemistry topics: Glycolysis, Citric Acid Cycle, and Electron Transport.) There is a reciprocal regulation of glycolytic and gluconeogenic reactions interconverting fructose-6-phosphate and fructose-1,6-biphosphate. Which one of the following statements about this regulation is not correct? This regulation allows control of the direction of net metabolite flow through the pathway. Fructose-2,6- bisphosphate activates phosphofructokinase-1. Fructose-2,6-biphosphate inhibits fructose-1,6-bisphosphate. The fructose-1,6-bisphosphatase reaction is exergonic. The PFK1 reaction is exergonic.arrow_forwardYeast have mitochondria and can perform cellular respiration. What would you expect to be consumed and produced during the process of cellular respiration in yeast?A. Glucose and O2 consumed; C02,H20, and energy produced B. Glucose, H20, C02, and energy consumed; O2 produced C. C02 and H20 consumed, glucose, O2, and energy produced D. C02 and energy consumed; H20, 02, and energy producedarrow_forward
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