Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 20, Problem 8SQ
Bacteria that serve as decomposers are ___ .
- a. photoautotrophs
- b. photoheterotrophs
- c. chemoautotrophs
- d. chemoheterotrophs
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Bacteria that serve as decomposers are______ . a. photoautotrophs c. chemoautotrophs b. photoheterotrophs d. chemoheterotrophs
Analogies
Photosythetic bacteria: sulfur compoinds::
A. Chemoautotropic bacteria: sulfur compound
B.Chemoautotropic bacteria: organic material
C.hetrotrophic bacteria: organic material
D.photosynthetic bacteria: ammonia
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…
Chapter 20 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 20 - Prob. 1SQCh. 20 - Prob. 2SQCh. 20 - Prob. 3SQCh. 20 - Prob. 4SQCh. 20 - __________ do not reproduce sexually. a....Ch. 20 - Prob. 6SQCh. 20 - Adapting to Host Defenses Surface proteins called...Ch. 20 - Prob. 2DAACh. 20 - Prob. 3DAACh. 20 - Adapting to Host Defenses Surface proteins called...
Ch. 20 - Prob. 7SQCh. 20 - Bacteria that serve as decomposers are ___ . a....Ch. 20 - Prob. 9SQCh. 20 - Formation of a(n) ___ allows some soil bacteria to...Ch. 20 - Prob. 11SQCh. 20 - Prob. 12SQCh. 20 - Which of these diseases is caused by bacteria? a....Ch. 20 - Prob. 14SQCh. 20 - Prob. 15SQCh. 20 - If a cut or scrape becomes infected,...Ch. 20 - The adenoviruses that cause colds do not have a...Ch. 20 - Prob. 3CTCh. 20 - Prob. 4CT
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