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 11.5, Problem 1RIA
Identify the substrate and products of the TCA cycle. Describe its organization in general terms. What are its major functions?
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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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- State the function and desired products of the hexose monophosphate shunt pathway.arrow_forward1) How is the TCA cycle regulated? a) Draw the TCA diagram that fills in all possible regulation points.arrow_forwardComplete the paragraph describing the fate of glutamate, labeled at the Cγ position with 14C, once it has been introduced to the TCA cycle. In the second round (A.) 50%,B.) 25%, C.)or NONE of the label is lost) , however, in each subsequent cycle (25%,50%, or NONE of the label is lost). This occurs becuase at the end of the second round the label is (A.)Equally dsitributed among all carbons B.) part of the carboxylate group C.) Positioned on the erminal Carbon) of oxaloacetate and each cycle (A.) releases a carbon B.) Releases two carbons C.) adds a carbon) from oxaloacetate.arrow_forward
- Referring to figure 5 and 8 which substrate molecule serves as the phosphate donor during substrate-level phosphorylation in step 10 of glycosis and the succinyl CoA-succinate step of the Krebs Cycle?arrow_forwardThe steps of the chymotrypsin mechanisms are listed below (1-7). Put the steps of chymotrypsin mechanism in the correct order. Figure representing chymotrypsin mechanism is given for reference. a.The portion (N-terminal end) of original substrate with the new C terminus diffuses away b. Substrate binding c. His 57 catalyzes removal of H from Ser 195 hydroxyl; Ser 195’s nucleophilic O attacks carbonyl C of substrate; tetrahedral intermediate is formed d. Water binding; water is deprotonated by His 57; resulting OH nucleophilically attacks carbonyl of remaining substrate; tetrahedral intermediate is formed e. His 57 donates H to N of…arrow_forwardSome are unable to taste thiourea and PTC. DNA sequence results for these individuals show a normal predicted amino acid sequence for the TAS2R38 gene. Provide an explanation that can account for insensitivity to thiourea. (a) First assuming a mutation involving the TAS2R38 gene (b) Then assuming a mutation in a gene other than TAS2R38arrow_forward
- Identify the two components of the nitrogenase complex and describe their specific tasks.arrow_forwarda) Based on the mechanism shown in Figure 2A, what type of enzyme is transpeptidase? : Lyase Isomerase Ligase Hydrolase Oxidoreductase Transferase b) Transpeptidases have two substrates. From Figure 2A, what type of mechanism do they most likely adopt in processing the two substrates? sequential or ping-pong c) β-lactams inactivate transpeptidases by forming a covalent bond with the serine residue in the active site. Based on this description and Figure 2B caption, what type of inhibitor are β-lactams? _________________________________________ d) Based on the mechanism for lactamase shown in Figure 3, what type of enzyme is lactamase? Lyase Isomerase Ligase Hydrolase Oxidoreductase Transferase e) Based on your answer in d, what other reactant, in addition to the antibiotic substrate, needs to be in the active site of lactamase for the hydrolysis reaction to proceed? ____________________arrow_forwardIn acute lymphoblastic leukemia, the cancerous white blood cells typically lack the enzyme asparagine synthetase. Why is the administration of asparaginase an eff ective therapy for this type of cancer?arrow_forward
- Honey bees have a well characterized gut microbiome. One of the species identified carries a gene for a protein called acetate:succinate CoA-transferase (ASCT) which catalyzes the reaction : acetate + Succinyl-CoA acetylCoA and succinate. What step in the TCA cycle is bypassed by this enzyme? How does that affect the yield of NTPs in the TCA cycle? What is the advantage of having this enzyme? Under what conditions would it be useful Would this enzyme allow the bacteria to synthesize glucose from 2 carbon precursors?arrow_forwardHbA1c is used to monitor blood glucose levels because hemoglobin is the only protein in blood that is covalently modified by glucose. True False Insulin Glargine is a long-acting form of insulin that is synthesized with several D-amino acids that slow its proteolytic degradation and extend the half-life of the insulin Glargine molecule. True Falsearrow_forward. The mechanism for lysozyme cleavage of its polysaccharide substrate requires Glu35 in its nonionized form, whereas the nearby Asp52 must be ionized (see the figure below). The pK values for the side-chain carboxyl groups on the two amino acids in solution are virtually identical. a) How can one carboxyl group be charged and the other uncharged in the active site of lysozyme? b) The pH optimum for lysozyme is about 5. Why do you suppose that the activity decreases above and below this optimum? Glu3s NAG Asp52 0-H Glu35 -C Asp52 tri-NAG NAGarrow_forward
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