Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
3rd Edition
ISBN: 9780134895727
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Publisher: PEARSON
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Textbook Question
Chapter 7.3, Problem 1CC
Name the molecules that conserve most of the energy from
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What is the citric acid cycle? Provide a schematic diagram of the citric acid cycle with chemical structures of each compound in the cycle. Indicate the cofactors and products at each step as well as the name of each of the enzymes involved.
Which reactions of the citric acid cycle transfer energy as FADH2?
What is the significance of substrate-level phosphorylation reactions? Which of the reactions in the citric acid cycle involve a substrate-level phosphorylation? Name another example from a biochemical pathway with which you are familiar.
Chapter 7 Solutions
Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
Ch. 7.1 - Compare and contrast aerobic and anaerobic...Ch. 7.1 - Name and describe the two ways in which ATP is...Ch. 7.1 - Prob. 3CCCh. 7.2 - During step 6 in Figure 7.9, which molecule acts...Ch. 7.3 - Name the molecules that conserve most of the...Ch. 7.3 - Prob. 2CCCh. 7.4 - Prob. 1CCCh. 7.4 - Prob. 2CCCh. 7.4 - MAKE CONNECTIONS Membranes must be fluid to...Ch. 7.5 - Prob. 1CC
Ch. 7.5 - WHAT IF? A glucose-fed yeast cell is moved from an...Ch. 7.6 - MAKE CONNECTIONS Compare the structure of a fat...Ch. 7.6 - Prob. 2CCCh. 7.6 - WHAT IF? During intense exercise, can a muscle...Ch. 7 - The immediate energy source that drives ATP...Ch. 7 - Which metabolic pathway is common to both...Ch. 7 - In mitochondria, exergonic redox reactions A. are...Ch. 7 - The final electron acceptor of the electron...Ch. 7 - What is the oxidizing agent in the following...Ch. 7 - When electrons flow along the electron transport...Ch. 7 - Most co, from catabolism is released during A....Ch. 7 - DRAW IT The graph here shows the pH difference...Ch. 7 - INTERPRET THE DATA Phosphofructokinase is an...Ch. 7 - Prob. 10TYUCh. 7 - FOCUS ON EVOLUTION ATP synthases are found in the...Ch. 7 - Prob. 12TYUCh. 7 - Prob. 13TYU
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- match the cofactor with its function in the citric acid cycle by entering the number corresponding with the function. A given function may be used more than one time or not at all. Use from the following list of functions to fill in the table below: carries O2 carries small carbon-containing molecules carries e- carries small nitrogen-containing molecules Cofactor Function NAD+/NADH FAD/FADH2 CoA thiamine biotinarrow_forwardWhy is it reasonable for excess NADH to negatively regulate the citric acid cycle?arrow_forwardHow is succinate dehydrogenase unique compared with the other enzymes in the citric acid cycle?arrow_forward
- What enzymes from the citric acid cycle that are allosterically regulated by ATP and/or NADH? What enzymes from the citric acid cycle that allosterically regulated by NAD+?arrow_forwardWhat substance acts as the starting point of the citric acid cycle, reacting with acetyl-CoA in the first step and being regenerated in the last step? Draw its structure.arrow_forwardHow many NADH and how many FADH2 molecules are formed in the citric acid cycle?arrow_forward
- Since no molecular oxygen participates in the citric acid cycle, the steps in which acetyl groups are oxidized to CO2 involve removal of hydride ions and hydrogen ions. What is the acceptor of hydride ions? What is the acceptor of hydrogen ions?arrow_forwardWhat reaction serves to link glycolysis and the citric acid cycle, and what is the enzyme that catalyzes the reaction?arrow_forwardThe reaction pictured is an oxidation-reduction reaction in the citric acid cycle in which the energy-carrier molecule NADH is generated. Identify which molecule in the reaction will be oxidized and which molecule will be reduced. Place a single answer choice in each box. COO- HO-C-H H-C-H COO- Malate NAD+ NADH + H+ Oxidized malate oxaloacetate COO- H-C-H ī COO- Oxaloacetate Reduced NADH NAD+arrow_forward
- How many turns of the citric acid cycle are implicated in accounting for the net oxidation of one (1) mole of fructose to carbon dioxide and water?arrow_forward|a) Explain why the citric acid cycle is considered to be the center of cellular metabolism. b) What are the substrates and products corresponding to one turn of the citric acid cycle? (no need for enzymes) c) Which steps of the citric acid cycle release CO2 as a product? Which steps produce NADH or FADH2? Which step produces GTP? d) How much ATP can be generated from glucose when the citric acid cycle is operating?arrow_forwardWhat is the net reaction of the citric acid cycle? What happens to each product? OXIDATIVE PHOSPHORYLATION: 3A) Thoroughly explain the biological significance of NADH/H* and FADH₂ and their roles in oxidative phosphorylation. 3B) Describe and diagram the general pathway of the electrons from NADH/H+ and FADH2 to 02 during the electron transport chain. 3C) What is "chemiosmotic coupling", and what is its relationship to ATP synthesis? 3D) During oxidative phosphorylation, what is oxidized and what is phosphorylated?arrow_forward
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