Microbiology with Diseases by Body System (5th Edition)
5th Edition
ISBN: 9780134477206
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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Textbook Question
Chapter 26, Problem 6MC
Nitrification converts _____.
a. organic nitrogen to NH3
b. NH3 to NH4+
C. NH4+ or NH3 to NO3–
d. NO3– to N2
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4. Most human pathogens are ______ with regard to temperature range of tolerance for optimum growth. *
A. thermophiles
B. mesophiles
C. psychrophiles
D. xerophiles
5. Which adaptations are developed by thermophiles to withstand extremely high temperature? Check all that apply. *
( ) high proportion of unsaturated fatty acids in the cell membrane
( ) high cytosine-guanine nitrogenous bases
( ) more saturated fatty acids in cytoplasmic membrane
( ) heat-stable enzymes
6. Which microbial group has relatively low moisture requirement for cell metabolism and growth? *
A. actinomycetes
B. fungi
C. bacteria
D. protozoa
7. How much oxygen gas (O2) must be present in a microenvironment for the microaerophilic microorganisms to grow at optimum? *
A. 21% oxygen gas (1 atmosphere)
B. completely absent
C. minimal amount
D. abundance or absence of O2 does not matter
8. Which microbial group can't survive in the presence of oxygen gas (O2)? *
A. obligate aerobes
B. facultative…
4/variants/410004/take/12/
MULTIPLE CHOICE
Question 18
Why are bacteria essential to the nitrogen cycle?
Bacteria break down rocks to release nitrogen into the soil.
B.
Bacteria convert nitrogen gas into a form that living things can use.
C.
Bacteria attract animals to the plants they eat for food.
D.
Bacteria kill off weak plants by giving them diseases.
MULTIPLE CHOICE
Question 19
The diagram below depicts the phosphorus cycle. Which of the processes from the dia-
gram releases phosphorus for living things to use?
ed
Chapter 26 Solutions
Microbiology with Diseases by Body System (5th Edition)
Ch. 26 - A blogger stated that germs (microorganisms) are...Ch. 26 - Compare human, animal, and plant pathogens that...Ch. 26 - Bioterrorism in the Mail? Of course, John had had...Ch. 26 - A microbiome is composed of _____. a. single, pure...Ch. 26 - Prob. 2MCCh. 26 - In the environment, nutrients are generally _____....Ch. 26 - Prob. 4MCCh. 26 - Prob. 5MCCh. 26 - Nitrification converts _____. a. organic nitrogen...Ch. 26 - Prob. 7MC
Ch. 26 - Which of the following diseases is not caused by...Ch. 26 - Of the following characteristics, which would...Ch. 26 - Anammox reactions are ____. a. anaerobic and pan...Ch. 26 - Modified True/False 1. _____ Biofilms of...Ch. 26 - Prob. 2MTFCh. 26 - Modified True/False 3. __________ Aquatic...Ch. 26 - Prob. 4MTFCh. 26 - Prob. 5MTFCh. 26 - Fill in the Blanks 1. Leaching of compounds from...Ch. 26 - Prob. 2FIBCh. 26 - Prob. 3FIBCh. 26 - Prob. 4FIBCh. 26 - Prob. 5FIBCh. 26 - Prob. 1VICh. 26 - Prob. 2VICh. 26 - Prob. 1CTCh. 26 - Microbes are found mostly in topsoil, but some are...Ch. 26 - Prob. 3CTCh. 26 - Prob. 4CTCh. 26 - Prob. 5CTCh. 26 - Using the following terms, fill in the following...
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- Methanogens are classified as ____. a. chemoautotrophs b. photoautotrophs c. photoheterotrophs d. chemoheterotrophs e. chemotrophsarrow_forwardPotato Dextrose agar (PDA), used for the enumeration of molds and yeasts, is selective because it: O A. None of the answers are correct O B. Contains lithium chloride O C. All of the answers are correct O D. Contains potato infusion and dextrose E. Has a pH that was lowered to pH 3.00 by the addition of concentrated HCIarrow_forwarde novo synthesis of building blocks always requires Group of answer choices A and B A. precursor metabolites C. nitrogen assimilation A and C B. CO2 fixationarrow_forward
- At equivalence point in a precipitation titration of Br- with AgNO3, pAg _____ pBr. Group of answer choices > < =arrow_forwardacid rain appear nutrient deficient. How čân you explain this 3. Your instructor challenges you to design an experiment to test the mutualistic relationship between Rhizobium and its legume pea- plant partner. He provides you with radioisotopes of N2 and CO2 gases. What experiment can your group design that would show the relationship between the pea-plant host and the bacterium partner is mutualistic? Search entries or author Unreadarrow_forward23arrow_forward
- The term psychrophile? a. refers to an organism that has an optimum growth within the range of -5 to 20oC b. refers to an organism that has an optimum growth at near neutral pHc. refers to an organism that has an optimum growth between 50 and 80oCarrow_forwardWhat is the proper term for an organism whose optimum growth range is between 20 and 50C but can grow well at refrigerator temperatures? a. psychrophile b. psychrotroph c. hypophiles d. psychrobotarrow_forwardFigure 22.19 Which of the following statements about the nitrogen cycle is false? Nitrogen fixing bacteria exist on the root nodules of legumes and in the soil. Denitrifying bacteria convert nitrates (NO3 ) into nitrogen gas (N2). Ammonification is the process by which ammonium ion (NH4+) is released from decomposing organic compounds. Nitrification is the process by which nitrites (NO2-) are converted to ammonium ion (NH4+).arrow_forward
- Chemoautotrophs can survive on ____________ alone.a. minerals b. CO2 c. minerals and CO2 d. methanearrow_forwardNumber 7 and 8 onlyarrow_forwardOlder people have a higher concentration of PFOAs bio-accumulate. Explain why bioaccumulation is observed if the half-life of PFOAs in the human body is about 3 years.arrow_forward
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