Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 8, Problem 15TF
Exoenzymes are produced outside the cell.
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Beer is produced by yeast fermentation of grain to ethanol. Why must the process of beer production be anaerobic?
In fermentative metabolism, a microbe produces ATP by:
oxidizing NADH to form the proton motive force
more than one of the answers is correct
generation of a proton motive force by transfer of electrons to oxygen
substrate level phosphorylation
In anaerobic respiration, what will happen if a bacterium uses nitrates as the terminal electron
acceptors?
nitrogenlaxation
nitrification
denitrification
both nitrogen fixation and nitrification
Chapter 8 Solutions
Microbiology: A Systems Approach
Ch. 8.1 - Describe the relationship among metabolism,...Ch. 8.1 - Fully discuss the structure and function of...Ch. 8.1 - Differentiate between an apoenzyme and a...Ch. 8.1 - Differentiate between an endoenzyme and an...Ch. 8.1 - Diagram the four major patterns of metabolism.Ch. 8.1 - Describe how enzymes are controlled.Ch. 8.2 - Name the chemical in which energy is stored in...Ch. 8.2 - Create a general diagram of a redox reaction.Ch. 8.2 - Identify electron carriers used by cells.Ch. 8.3 - List three basic catabolic pathways and the...
Ch. 8.3 - Construct a paragraph summarizing glycolysis.Ch. 8.3 - Describe the Krebs cycle and compare the process...Ch. 8.3 - Discuss the significance of the electron transport...Ch. 8.3 - State two ways in which anaerobic respiration...Ch. 8.3 - Summarize the steps of microbial fermentation and...Ch. 8.3 - Prob. 16AYPCh. 8.4 - Prob. 17AYPCh. 8.4 - Define amphibolism.Ch. 8.5 - Summarize the overall process of photosynthesis in...Ch. 8.5 - Discuss the relationship between light-dependent...Ch. 8.5 - Explain the role of the Calvin cycle in the...Ch. 8 - Prob. 1MCQCh. 8 - An enzyme a. becomes part of the final products....Ch. 8 - An apoenzyme is where the ____ is located. a....Ch. 8 - Many coenzymes are a. metals. b. vitamins. c....Ch. 8 - Prob. 5MCQCh. 8 - Energy is carried from catabolic to anabolic...Ch. 8 - A product or products of glycolysis is/are a. ATP....Ch. 8 - Prob. 8MCQCh. 8 - Complete oxidation of glucose in aerobic...Ch. 8 - ATP synthase complexes can generate ______ ATP(s)...Ch. 8 - True-False Questions. If the statement is true,...Ch. 8 - An enzyme lowers the activation energy required...Ch. 8 - One cycle of fermentation yields more energy than...Ch. 8 - Energy in biological systems is primarily...Ch. 8 - Exoenzymes are produced outside the cell.Ch. 8 - Prob. 1CTQCh. 8 - Prob. 2CTQCh. 8 - Compare and contrast the processes of...Ch. 8 - Draw a bacterial cell and a eukaryotic cell side...Ch. 8 - Provide evidence in support of or refuting the...Ch. 8 - From chapter 4, figure 4.16. On the enlarged...Ch. 8 - Using the words that follow, please create a...
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- An enzyme requiring an inorganic cofactor (like Fe2+), which is only loosely attached to the apoenzyme, is properly referred to as: the metalloenzyme the metal-activated enzyme the cosubstrate the prosthetic group the coenzymearrow_forwardWhich type of enzyme is directly involved in causing cellular damage during the disease process? O Exoenzyme O None of the listed answers are correct. O Endoenzymearrow_forwardWhat is an apoenzyme?arrow_forward
- Substrate-level phosphorylation is a(n) ________ method of phosphorylation. reductive reductive direct direct indirectarrow_forwardWhich are considered exoenzymes? Choose all that apply. DNase OCoagulase Esculinase Hemolysinarrow_forwardWhat is the end product of fermentation? Lactic acid Oxygen Ethanol Two of the abovearrow_forward
- Bread making involves ethanol fermentation and typically uses yeast, sugar,flour, and water. Why are yeast and sugar used?arrow_forwardDenitrification occurs under: anaerobic conditions aerobic conditions both aerobic and anaerobic conditionsarrow_forwardWhy would you not expect an obligate aerobe to have a fermentative pathway?arrow_forward
- Select the correct answer from the parenthesis: Facultatively anaerobic bacteria undergoes a process of (fermentation, the citric acid cycle), that takes place in the absence of (oxygen, carbon dioxide) and begins with a molecule of (glucose, protein) and ends with molecules of (amino acids, an organic end product). These types of bacteria are considered as chemoheterotroph, which use energy from (light, organic compounds) to synthesize (carbohydrate, oxygen gas) and are typified by species of (Escherichia coli, Nitrosomonas)arrow_forwardWhich of the following is a useful application of lactate fermentation? Yogurt production Beer brewing Winemaking Breadmakingarrow_forwardYou are talking with a winemaker about yeast. "I know that yeast can survive under both aerobic and anaerobic conditions," he says, "but what I don't understand is why they seem to need so much more sugar under anaerobic conditions. I think they gobble a hundred times as much sugar." Can you explain to him why yeast might need more sugar under anaerobic conditions than under aerobic conditions? Is his estimation of a hundred times as much sugar reasonable?arrow_forward
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