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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Textbook Question
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
Why are bacterial decomposers important?
a.
They produce spores.
b.
Common in biotechnology.
c.
They fix nitrogen.
d.
They break down complex organic molecules in wastes and remains.
e.
Most cause disease.
Heterotrophs that harvest energy from organic molecules are called
A.
photoautotrophs
B.
chemoautotrophs
C.
photohetrotrophs
D.
Chemoheterotrophs
E.
nitrogen fixers.
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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Which microbe is NOT found present in water with eutrophication events(s)?
A. Nitromonas sp.
B. Bacteroides sp.
C. Anabaena sp.
D. Cyanobacteria
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Bacteria that thrive in puncture wounds are likely to be (a) aerobes (b) photoautotrophs (c) chemoautotrophs (d) endospores (e) obligate anaerobes
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When conditions are unfavorable, some bacteria:
a. Become non pathogenic
b formspores, a resting stage
c switch to photosynthesis
d Become pathogenic
e engage in conjugation
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Atmospheric nitrogen can be useda) directly by all living organisms.b) only by aerobic bacteria.c) only by anaerobic bacteria.d) in symbiotic relationships between rhizobia and plants.e) in photosynthesis.
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Bacteria that are autotrophs (a) do not require atmospheric oxygen for cellular respiration (b) must obtain organic compounds from other organisms (c) manufacture their own organic molecules from simple raw materials (d) get their nourishment from dead organisms (e) produce endospores when oxygen levels are too low for active growth
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The majority of heterotrophic bacteria are (a) free-living chemoheterotrophs (b) photoautotrophs (c) chemo-autotrophs (d) facultative anaerobes (e) obligate anaerobes
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What microbes is highest in agricultural lands?
A. Aerobic nitrogen fixing bacteria
B. Anaerobic nitrogen fixing bacteria
C. Aerobic heterotrophic bacteria
D. Anaerobic heterotrophic bacteri
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Rhizobium and Azotobacter are examples of nitrogen-fixing soil bacteria that are classified as a. chemolithotrophs. b. chemoorganotrophs. c. photoautotrophs. d. photoheterotrophs.
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organisms that use light energy as carbon source is known as
Select one:
a. chemoHeterotrophs
b. photoheterotrophs
c. photoautotrophs
d. chemoautotrophs
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Farmers often spray spores of which bacterial species that make a protein toxic only to some insect larvae?
a.
Bacillus thuringiensis
b.
Proteobacteria
c.
Agrobacterium tumefaciens
d.
Aspergillus niger
e.
Verticillium
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In a dark cave, you discover a microscopic creature growing by stripping electrons from Cu+ (cuprous copper) and fixing atmospheric carbon. Your new pet, "Little Blue", is a:
a) Chemoautotroph
b) Chemoheterotroph
c) Photoautotroph
d) Photoheterotroph
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What is the difference in microbial population from water sediment and neustonic source?
A. Ratio of phototrophic and heterotrophic microbes.
B. Ratio of anaerobic microbes to aerobic microbes.
C. Ratio of heterotrophic and cellulolytic microbes.
D. All statements are acceptable descriptions.
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