Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
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 - Bacteriophage-Inspired Antibiotics Although...Ch. 20 - Bacteriophage-Inspired Antibiotics Although...Ch. 20 - Bacteriophage-Inspired Antibiotics Although...Ch. 20 - The genome of ___ can be either RNA or DNA. a. a...Ch. 20 - The capsid of a virion consists of ___ . a. DNA b....Ch. 20 - Bacteriophages kill their host quickly by ______ ....Ch. 20 - The genetic material of HIV (a retrovirus) is...Ch. 20 - Prob. 5SQCh. 20 - Prob. 6SQCh. 20 - Prob. 7SQ
Ch. 20 - Bacteria that serve as decomposers are ___ . a....Ch. 20 - Prob. 9SQCh. 20 - Formation of a(n) ___ allows some soil bacteria to...Ch. 20 - _____ in the stomach of a cow release methane. a....Ch. 20 - A plasmid is a circle of ___ . a. RNA b. DNA c....Ch. 20 - Prob. 13SQCh. 20 - Prob. 14SQCh. 20 - Prob. 15SQCh. 20 - Prob. 1CTCh. 20 - Adenoviruses that cause colds do not have a lipid...Ch. 20 - The antibiotic penicillin acts by interfering with...Ch. 20 - Raw red alga of the genus Porphyra is part of a...
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