Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Textbook Question
Chapter 27, Problem 1MCQ
Activated sludge system
- a. the process takes place under aerobic conditions
- b. the process takes place under anaerobic conditions.
- c. the amount of oxygen doesn’t make any difference
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During plasmolysis, the volume of water will__________. During lysis, the volume of water will__________.
A. decrease; increase
B. increase; stay the same
C. increase; decrease
D. decrease; stay the same
Choose pne of these choices:
A. Water molecules will still be able to move across the cell membrand but at a slkwer rate.
B. Water moleces will no longer be able to move across the cell membrane.
C. Water molecules will move across the cell membrand at a faster rate without the aquaporin regulating their flow.
D. Water molecules will only be able to enter the cell by active transport.
DNP is a chemical that inserts proton channels in bacterial plasma membranes. Addition of DNP to obligate aerobes results in _____.
Group of answer choices
A. growth as a facultative anaerobe
B. death of all microbes in the culture
C. no effect on microbes that do not use an ETS for anaerobic metabolism
D. growth only in anaerobic conditions
E. growth only in aerobic conditions
Chapter 27 Solutions
Microbiology: An Introduction
Ch. 27 - The koala is a leaf-eating animal. What can you...Ch. 27 - Give one possible explanation of why Penicillium...Ch. 27 - In the sulfur cycle, microbes degrade organic...Ch. 27 - Why is the phosphorus cycle important?Ch. 27 - DRAW IT 5. Identify where the following processes...Ch. 27 - Prob. 6RCh. 27 - Outline the treatment process for drinking water.Ch. 27 - Prob. 8RCh. 27 - Bioremediation refers to the use of living...Ch. 27 - NAME IT 10. These nitrogen-fixing prokaryotes...
Ch. 27 - Activated sludge system a. the process takes place...Ch. 27 - Prob. 2MCQCh. 27 - Nitrogen fixation a. the process takes place under...Ch. 27 - Prob. 4MCQCh. 27 - The water used to prepare intravenous solutions in...Ch. 27 - CO2+H2SLightLightC6H12O6+S0 a. aerobic respiration...Ch. 27 - Prob. 7MCQCh. 27 - CO2+8H++8eCH4+2H2O a. aerobic respiration b....Ch. 27 - Prob. 9MCQCh. 27 - Coliforms are used as indicator organisms of...Ch. 27 - Prob. 1ACh. 27 - Explain the effect of dumping untreated sewage...Ch. 27 - Flooding after two weeks of heavy rainfall in...Ch. 27 - The bioremediation process shown in the photograph...
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- c. Microbes getting busy... Due to respiration, bacteria can increase the concentration of CO₂ in their local environment. Suppose a soil solution has a pH of 6.5 and CTOTAL Of 10-2 M.) i. Assuming a closed system, what is the alkalinity of this solution?arrow_forwardExplain the term plasmolysis. Give one application of this phenomenon in our daily lives.arrow_forwardM17.arrow_forward
- Diffusiona. is always facilitated.b. occurs by active transport.c. is increased when temperature increases.d. requires aquaporin proteins.arrow_forwardDenitrification occurs under: anaerobic conditions aerobic conditions both aerobic and anaerobic conditionsarrow_forwardAn acidophile would grow best at a pH of: A.6 b.2 c.12 d.7 e 9arrow_forward
- When my environment dries out, i am capable of losing all the water from my body and surviving in this dormant state for many years in the chance that water may someday return. This unique truck I preform is called... 1.) Autohydro resuscitation 2.) Torpor 3.) Dessication 4.) Bioaqueous estivation 5.) Anhydrobiosisarrow_forwardImagine you are a doctor treating a patient with a skin infection caused by a facultative anaerobic bacteria. You have tried several rounds of topical antibiotics, but the infection keeps returning. One of your interns suggests that you try hyperbaric chamber treatment – how would you respond? 1. “Hyperbaric chamber treatment might work because these bacteria won’t be able to obtain energy under low-oxygen conditions. Let’s give it a shot.” 2. “Hyperbaric chamber treatment won’t work because these bacteria can undergo anaerobic fermentation when oxygen levels are low. I’m prescribing oral antibiotics.” 3. “Hyperbaric chamber treatment won’t work because these bacteria can undergo aerobic respiration when oxygen is abundant. I’m going to prescribe oral antibiotics.” 4. “Hyperbaric chamber treatment might work because these bacteria won’t be able to obtain energy under high-oxygen conditions. Let’s give it a shot.”arrow_forwardCompare and contrast granular and bulking sludge. Why is granular sludge desirable?arrow_forward
- 22. Acidophilic bacteria: high concentrations of hydrogen ions are required for cell wall stability: A. True. B. False. 10arrow_forwarda. Name four categories that blood agar fits.b. Name four differential reactions that TSIA shows.c. Observe figure 2 . Suggest what causes the difference in growthpattern between nonmotile and motile bacteria. d.Explain what a medium that is both selective and differential does,using figure1 .arrow_forwardPlease answer this question Define Anaerobic thresholdarrow_forward
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