Prescott's Microbiology
10th Edition
ISBN: 9781259281594
Author: Joanne Willey, Linda Sherwood Adjunt Professor Lecturer, Christopher J. Woolverton Professor
Publisher: McGraw-Hill Education
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Chapter 11.6, Problem 1MI
Summary Introduction
The citric acid cycle is otherwise known as the tricarboxylic acid cycle or TCA cycle. In this cycle, the acetyl-CoA is oxidized to form adenine triphosphate (ATP). The TCA cycle occurs in the mitochondria. This cycle is essential to other biochemical pathways.
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Chapter 11 Solutions
Prescott's Microbiology
Ch. 11.1 - Retrieve, Infer, Apply Discuss the ways in which...Ch. 11.1 - Describe the nutritional requirements of the major...Ch. 11.1 - Retrieve, Infer, Apply Compare...Ch. 11.1 - Retrieve, Infer, Apply What are the three major...Ch. 11.2 - Is NAD+ reduced to NADH in the catabolic or...Ch. 11.2 - Prob. 1RIACh. 11.2 - Why is it to a cells advantage to catabolize...Ch. 11.2 - Prob. 3RIACh. 11.4 - Which reactions are examples of substrate-level...Ch. 11.4 - For what kinds of reactions is NADPH used?
Ch. 11.4 - For what macromolecule is ribose 5-phosphate a...Ch. 11.4 - Summarize the major features of the...Ch. 11.4 - Prob. 2RIACh. 11.5 - Identify the substrate and products of the TCA...Ch. 11.5 - What chemical intermediate links pyruvate to the...Ch. 11.5 - Prob. 3RIACh. 11.5 - Retrieve, Infer, Apply In what eukaryotic...Ch. 11.5 - Why is it desirable for a microbe with the...Ch. 11.6 - Prob. 1MICh. 11.6 - Prob. 2MICh. 11.6 - Prob. 1RIACh. 11.6 - Describe the current model of oxidative...Ch. 11.6 - Prob. 3RIACh. 11.6 - Prob. 4RIACh. 11.7 - Prob. 1RIACh. 11.7 - Prob. 2RIACh. 11.7 - Prob. 3RIACh. 11.8 - Prob. 1MICh. 11.8 - Prob. 1RIACh. 11.8 - Prob. 2RIACh. 11.8 - Briefly describe alcoholic, lactic acid, mixed...Ch. 11.8 - Prob. 4RIACh. 11.8 - Prob. 5RIACh. 11.9 - What is the difference between a hydrolase and...Ch. 11.9 - Prob. 2MICh. 11.9 - Retrieve, Infer, Apply Briefly discuss the ways in...Ch. 11.9 - Prob. 2RIACh. 11.9 - Retrieve, Infer, Apply Describe how a...Ch. 11.10 - How do chemolithotrophs obtain their ATP and...Ch. 11.10 - Prob. 2RIACh. 11.10 - Why can hydrogen-oxidizing bacteria and archaea...Ch. 11.10 - What is reverse electron flow and why do many...Ch. 11.10 - Arsenate is a compound that inhibits...Ch. 11.11 - When electrons from P700 are used to reduce NADP+,...Ch. 11.11 - Define the following terms: light reactions, dark...Ch. 11.11 - Prob. 2RIACh. 11.11 - What is the function of accessory pigments?Ch. 11.11 - Prob. 4RIACh. 11.11 - Compare and contrast anoxygenic phototrophy and...Ch. 11.11 - Prob. 6RIACh. 11 - Without looking in chapters 21 and 22, predict...Ch. 11 - From an evolutionary perspective, discuss why most...Ch. 11 - How would you isolate a thermophilic...Ch. 11 - Certain chemicals block ATP synthesis by allowing...Ch. 11 - Prob. 5CHICh. 11 - A cyanobacterium having photosystem I but not...Ch. 11 - Review the description of the Berkeley Pit Lake in...Ch. 11 - The archaeon Metallosphaera sedula is of great...Ch. 11 - Nitrite-oxidizing bacteria have been thought to be...
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- The citrate cycle is a metabolic engine generating [ Select: "carbon monoxide", "NAD, FAD and GDP", "carbon dioxide, NADH, FADH, and GTP"] from the fuel [ Select : "triglycerides", "acetyl-CoA"]. It is considered a cycle since all components must be maintained beginning with the addition of the two carbons from acetyl-CoA to form [ Select ] ["succinate", "citrate"] from [ Select ]["fumarate", "oxaloacetate"]. The citrate cycle depends on the presence of oxygen since [ Select ]["oxygen is directly required in the citrate cycle", "oxygen is required for NADH and FADH2 oxidation, and their accumulation in the absence of electron transport results in feedback inhibition of the citrate cycle"] .arrow_forwardThiolase is homologous in structure to the condensing enzyme. On the basis of this observation, propose a mechanism for the cleavage of 3-ketoacyl CoA by CoA.arrow_forwardPeroxisomes have an alternative pathway for oxidizing polyunsaturated fatty acids. They contain a hydratase that converts D-3-hydroxyacyl CoA into trans Δ²- enoyl CoA. How can this enzyme be used to oxidize CoAs containing a cis double bond at an evennumbered carbon atom (e.g., the cis-Δ¹² double bond of linoleate)?arrow_forward
- The synthesis of citrate from acetyl CoA and oxaloacetate is a biosynthetic reaction. What is the energy source that drives formation of citrate?arrow_forwardMost fatty acids have an even number of carbons and, therefore, are completely metabolized to acetyl-CoA. A fatty acid with an odd number of carbonsis metabolized to acetyl-CoA and one equivalent of propionyl-CoA. The following two reactions convert propionyl-CoA into succinyl-CoA, a citric acidcycle intermediate, so it can be further metabolized. Each of the reactions requires a coenzyme. Identify the coenzyme for each step. From what vitaminsare the coenzymes derived? (Hint: see Chapter 23.) COO− COO−CH2CH2methylmalonyl-CoA succinyl-CoA CH3CH2 SCoAarrow_forwardwhat is the metabolic reaction of propinoyl CoA carboxylase?arrow_forward
- Behenate (C22H44O2) can be obtained by chain elongation from palmitate. How many ATP equivalents are produced in the degradation of behenate to eleven acetyl-CoA?arrow_forwardHow many moles of Acetyl CoA are produced from the beta oxidation of Lauric Acid?arrow_forwardWhat is the normal fate of citrate formed by the condensation of acetyl CoA with oxaloacetate?arrow_forward
- In the presence of an excess of [14C]acetyl- COA, the metabolic pool of malonyl-CoA becomes labeled at which carbon atom(s)?arrow_forwardFatty acids are converted to their coenzyme A esters in a reversible reaction catalyzed by acyl-CoA synthetase: R-COO +ATP +COA R-C-COA +AMP + PPi a) The reaction involves two steps the first of which forms an enzyme-bound intermediate identified as the mixed anhydride of the fatty acid and AMP: R-C-O-P-O-nibose-adenine Write two chemical equations coresponding to the two steps of the reaction catalyzed by the synthetase. b) The acyl-CoA synthetase reaction as written above is readily reversible. How might the reaction be made to favor formation of fatty acyl-CoA? Write within the box. Anything outside the box will not be graded. From thearrow_forwardWhat is the metabolic importance of malonyl-CoA?arrow_forward
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