Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 21.2, Problem 1TQ
Summary Introduction
To review:
The examples of microbial
Introduction:
Assimilation describes the process through which an organism acquires an element like carbon from its available sources in the environment and converts them into
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Chapter 21 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 21.1 - Prob. 1TQCh. 21.1 - Prob. 2TQCh. 21.1 - Prob. 3TQCh. 21.2 - Prob. 1TQCh. 21.4 - Prob. 1TQCh. 21.4 - Prob. 2TQCh. 21.4 - Prob. 3TQCh. 21.5 - Prob. 1TQCh. 21.6 - Prob. 1TQCh. 21.6 - Prob. 2TQ
Ch. 21.6 - Prob. 3TQCh. 21.6 - Prob. 4TQCh. 21 - Prob. 1RQCh. 21 - Prob. 2RQCh. 21 - Prob. 3RQCh. 21 - Prob. 4RQCh. 21 - Prob. 5RQCh. 21 - Prob. 6RQCh. 21 - Prob. 7RQCh. 21 - Prob. 8RQCh. 21 - Prob. 9RQCh. 21 - Prob. 10RQCh. 21 - Prob. 11RQCh. 21 - Prob. 12RQCh. 21 - Prob. 13RQCh. 21 - Prob. 14RQCh. 21 - Prob. 1TQCh. 21 - Prob. 2TQCh. 21 - Prob. 3TQ
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- Select only the exclusive aerobic 4microbial pathways ahead: -Nitrate assimilation O Nitrification -Disproportionation of thiosulfate -Denitrification -Ammonium asimilation -Ammonification -Respiration -Dissimilatory sulfate reduction -Metanogenesis -Methanotrophy -ANAMOX -Assimilatory sulfate reduction -Methylotrphy -Chemolithotrophic CO2 reduction -Photossyntesis -Desulfurylation -Dissimilatory Nitrate Reduction to Ammonium -Atmospheric Nitrogen fixation -Sulfide oxidation by colorless bacteriaarrow_forwardDescribe the importance of the nitrogen and carbon cycles and the role of microbes in their maintenance. Discuss biofilms and their relevance to infectious diseases. Discuss population growth and the phases of a typical bacterial growth curve. Describe generation time for a bacterial population Explain how bacterial growth correlates to disease. Describe how environmental changes can alter the shape of a growth curve. Categorize microbes based on their preferred environmental niches (pH, temperature, oxygen and salt). Identify the biological properties that allow different classes of microbes to grow in extreme environments.arrow_forwardA microbiologist used the concept of enrichment culture to isolate aerobic and anaerobic nitrogen-fixing bacteria, sulfate-reducing bacteria, and sulfur-oxidizing bacteria. What kind of selective media could he haveused for isolating each of these four classes of microbes?arrow_forward
- Listen Which of the following regarding controlling microbial growth is true? a) Microbial death rate increases with an increase in temperature b) The more microbes present, the shorter amount of time it will take to kill the population E c) Gram-positive bacteria tend to be more resistant to chemicals than gram- negative bacteria d) Microbial death rate increases as pH approaches 7 (neutral) Previous Page Submit Quiz $ R Next Page 5 of 10 questions saved % H K Page 4 of 10arrow_forwardTOPIC : MICROBIAL GROWTH Classify the bacteria that is most likely involved in each situation provided according to their classification (as to microbial growth requirements). CHOICES: A. Obligate aerobe ,B. Obligate anaerobe, C. Microaerophile, D. Aerotolerant anaerobe, E. Mesophile, F. Thermophiles 1.The bacteria under study thrives at the alveolar ducts in the lungs causing respiratory disease. 2.In the experiment, the agar plate containing an axenic culture was originally incubated inside a candle jar for one day and then transferred to an oxygen-rich incubator for another day. Findings: the microbial growth persisted and stayed the same regardless of the specific type of incubation employed. 3.A microorganism that can survive pickling and refrigeration was discovered when a tightly-sealed jar of pickles grew several colonies despite following the correct recipe, tight closure seal, and proper refrigeration. 4.The spoiled bottle of wine that was stored at standard room temperature…arrow_forwardThe followings list the false statements about microbial growth curves EXCEPT* Log phase indicates that microbes need to adjust to a new environment of food Microbes grow exponentially when they are in the stationary phase Microbes grow exponentially when the conditions of the food are favorable for multiplication O Microbes start to die when they are in the lag phase O Lag phase indicates that microbes does not have enough time to growarrow_forward
- What physical and chemical conditions are necessaryfor the rapid microbial degradation of oil in aquaticenvironments?arrow_forwardWhat roles do bacteria play in nitrogen fixation, ammonification, nitrification, and denitrification? (Be detailed in this response and be sure to address all four reactions.)arrow_forwardAll of the following are ways microorganisms adapt to limited nutrients except: synthesize increased amount of enzymes for uptake and metabolism of limited nutrients form metabolically active highly resistant endospores synthesize enzymes needed to use a different nutrient acetic acid adjust the rate at which they metabolize nutrientsarrow_forward
- What novel strategies can be explored for the control of microbial growth, considering the emerging challenges of antimicrobial resistance and environmental sustainability?arrow_forwardDiscuss a selected local fermented food or drink in Ghana giving particular attention to the fermentation procedure (natural or controlled culture),desired products,byproducts and the key fermentative microbes involved.arrow_forwardDiscuss the importance of some bacteria to undergo starvation during stationary phase and importance of knowing the right culture media for specific microorganism.arrow_forward
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