Essentials of Biology (5th International Edition)
5th Edition
ISBN: 9781259660269
Author: Sylvia S. Mader, Dr., Michael Windelspecht
Publisher: Mcgraw-Hill
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Chapter 7, Problem 1TC
The compound malonate , a substrate of the citric acid cycle, can be poisonous at high concentrations because it can block
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The citric acid cycle generates NADH and FADH2, which are then used in the process of oxidative phosphorylation to make ATP. If the citric acid cycle (which does not use oxygen) and oxidative phosphorylation are separate processes, as they are, then why is it that the citric acid cycle stops almost immediately when O2 is removed?
The end product of glycolysis, pyruvate, cannot enter as such into the citric acid cycle. Which process converts this C3 compound to a C2 compound?
To reduce six molecules of carbon dioxide to one molecule of glucose via photosynthesis, how many molecules of NADPH and ATP are required?
Chapter 7 Solutions
Essentials of Biology (5th International Edition)
Ch. 7.1 - Explain the role of cellular respiration in a cellCh. 7.1 - State the overall reaction for glucose breakdown.Ch. 7.1 - List the four phases of cellular respiration, and...Ch. 7.1 - Explain why cellular respiration is needed by the...Ch. 7.1 - Prob. 2CYPCh. 7.1 - Summarize the four stages of cellular respiration,...Ch. 7.1 - Prob. 1ACh. 7.1 - Prob. 2ACh. 7.2 - Prob. 1LOCh. 7.2 - Prob. 2LO
Ch. 7.2 - Prob. 3LOCh. 7.2 - Prob. 1CYPCh. 7.2 - Contrast the energy-investment step of glycolysis...Ch. 7.2 - Prob. 3CYPCh. 7.2 - Prob. 3ACh. 7.2 - Prob. 4ACh. 7.3 - Explain why fermentation pathways are beneficial...Ch. 7.3 - Prob. 2LOCh. 7.3 - Prob. 1CYPCh. 7.3 - Prob. 2CYPCh. 7.3 - Prob. 3CYPCh. 7.3 - Prob. 5ACh. 7.3 - Prob. 6ACh. 7.4 - Prob. 1LOCh. 7.4 - Prob. 2LOCh. 7.4 - 3. Identify the inputs and outputs of each pathway...Ch. 7.4 - Prob. 4LOCh. 7.4 - Prob. 1CYPCh. 7.4 - Prob. 2CYPCh. 7.4 - Prob. 3CYPCh. 7.4 - Prob. 7ACh. 7.4 - Prob. 8ACh. 7.4 - Prob. 9ACh. 7.4 - Prob. 10ACh. 7.4 - Prob. 11ACh. 7.4 - Prob. 12ACh. 7.5 - Prob. 1LOCh. 7.5 - Prob. 2LOCh. 7.5 - Prob. 1CYPCh. 7.5 - Prob. 2CYPCh. 7.5 - Prob. 3CYPCh. 7.5 - Prob. 13ACh. 7.5 - Prob. 14ACh. 7.5 - Prob. 15ACh. 7 - Prob. 1BYBCh. 7 - Prob. 2BYBCh. 7 - How are other organic nutrients, such as fats and...Ch. 7 - Prob. S3.2BYBCh. 7 - Prob. S4.4BYBCh. 7 - Prob. S5.2BYBCh. 7 - The compound malonate , a substrate of the citric...Ch. 7 - Prob. 2TCCh. 7 - Prob. 3TCCh. 7 - Prob. 4TC
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- Both prokaryotic and eukaryotic organisms carry out some form of glycolysis. How does ha fact support or not support the assertion that glycolysis is one of the oldest metabolic pathways?arrow_forwardWhat would happen to the citric acid cycle if NADH and FADH2 were not reoxidized?arrow_forwardWhat steps in the citric acid cycle have each of the following characteristics? a. The reaction generates FADH 2. b. The organic substrate is oxidized. c. The reaction utilizes NAD +. d. The reaction breaks a carbon–carbon bond.arrow_forward
- Maximal production of ATP from glucose involves the reactions of glycolysis, the citric acid cycle, and the electron transport chain. Which of these reactions requires O2, and why? Which, in certain organisms or physiological conditions, can proceed in the absence of O2?arrow_forwardThe electron transport chain contains four large protein complexes: the NADH-Q reductase complex, succinate dehydrogenase, the cytochrome c reductase complex, and the cytochrome c oxidase complex. What do they have in common?arrow_forwardDo any of the respiratory complexes play a role in the citric acid cycle? If so, what is that role?arrow_forward
- The primary role citric acid cycle is to collect high energy electrons from the oxidation of carbons in the form of NADH and FADH2. If the electron transport chain is inhibited, would you expect the citric acid cycle to be more active or lessactive? Explain your answer.arrow_forwardWhich of the following electron-transport chain complexes is also a member of the citric acid cycle? a. Complex I b. Complex II c. Complex III d. Complex IVarrow_forwardWhich reaction in cellular respiration produces energy through substrate-level phosphorylation? What molecule is the final electron acceptor in the electron transport chain in cellular respiration? What are produced from 1 Glucose molecule during cellular respiration? How many ATP molecules are produced directly during the citric acid cycle?arrow_forward
- The citric acid cycle is frequently described as the major pathway of aerobic catabolism, which means that it is an oxygen-dependent degradative process. However, none of the reactions of the cycle directly involve oxygen as a reactant. Why is the pathway oxygen dependent?arrow_forwardWhen you stop running the citric acid cycle and have sufficient ATP, citrate can build up in the mitochondria, what happens to this excess citrate? What are the two primary intermediate molecules produced by citrate in the cytoplasm? What storage molecule is made?arrow_forwardThe citric acid cycle can be divided into two stages. In one stage, carbon atoms are added and removed, and in the second stage, oxaloacetate is regenerated. Which steps of the citric acid cycle correspond to each stage?arrow_forward
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