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Groups of cells derived from a single parent cell by successive cell divisions are known as________and which live in environments known as________ .

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(microbial...

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Cyanobacteria and purple bacteria both obtain energy from light, however only the________are capable of releasing ________.

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cyanobacte...

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Without microorganisms, all higher life forms on Earth would cease to exist.

A) True
B) False

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Microbial control in wastewaters would most logically be a part of


A) microbial technology.
B) bacterial energetics.
C) aquatic microbiology.
D) microbial genetics.

E) A) and D)
F) All of the above

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Martinus Beijerinck was the first to isolate


A) certain nitrogen- fixing root nodule bacteria.
B) green algae.
C) certain sulfate- reducing bacteria.
D) all of the above.

E) A) and B)
F) C) and D)

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Microorganisms play key roles in the cycling of important nutrients in plant nutrition, particularly those of


A) sulfur.
B) carbon.
C) carbon, nitrogen, and sulfur.
D) nitrogen.

E) None of the above
F) A) and C)

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The three major bioenergy products of microorganisms are________ , _________, and________.

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biodiesel / methane / ethanol (any order)

DNA sequencing to study organisms' entire nucleotide sequences initially brought about the field of________ , which has itself spawned the subdisciplines of _________ and ________that represent more functional- based approaches.

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genomics / proteomic...

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Mycobacterium tuberculosis is very difficult to stain because of the


A) presence of ribosomes in the cytoplasm.
B) large amounts of a waxy lipid present in its cell wall.
C) location of the DNA within the cell.
D) lack of a cell wall.

E) A) and D)
F) A) and C)

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The text states that antibiotics are derived from microorganisms. What is the benefit to an antibiotic- producing microorganism of producing an antibiotic in its natural habitat?

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Answers will vary, but it must first be stated the antibiotic- producing microbe would need to be resistant to the antibiotic. This should then follow into a discussion on how antibiotic production could be viewed as a way to persist in the environment, such as maintaining dominance in a community over others.

A pure culture


A) is a population of identical cells.
B) was cultured for a certified stock culture.
C) is sterile.
D) is made of a clearly defined chemical medium.

E) All of the above
F) A) and B)

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Chemolithotrophy involves


A) metabolic autotrophy.
B) oxidation of inorganic compounds.
C) oxidation of organic compounds.
D) reduction of organic compounds.

E) A) and B)
F) A) and C)

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The disease anthrax is caused by the pathogenic bacterium , which produces heat- resistant structures known as________ .

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Bacillus a...

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In what/which domain(s) of life is/are microorganisms represented?


A) Bacteria
B) Eukarya
C) Archaea
D) all of the above

E) All of the above
F) A) and D)

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A Pasteur flask has a(n)


A) secondary opening at the base to allow for drainage.
B) swan neck to prevent particulate matter from getting into the main body of the flask.
C) double neck so two substances may be added at the same time.
D) inverted upper edge to prevent spillage while swirling.

E) A) and C)
F) A) and D)

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The discipline of microbiology is intimately associated with biochemistry and genetics, because cells are both biochemical catalysts and genetic coding devices.

A) True
B) False

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________produced by microbial fermentation of glucose from sugarcane or cornstarch is becoming a more important component of biofuels in the United States, and ________microbiologists are needed to make this a commercially available product.

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Ethanol / ...

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Louis Pasteur developed the vaccine(s) for


A) anthrax.
B) rabies.
C) fowl cholera.
D) all of the above.

E) A) and C)
F) B) and C)

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Basic microbiology can be used to


A) study characteristics of cells of multicellular organisms.
B) probe the fundamental processes of life.
C) model our understanding of cellular processes in multicellular organisms, including humans.
D) do all of the above.

E) None of the above
F) A) and B)

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D

Robert Koch received the 1905 Nobel Prize for Physiology or Medicine for ________.

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his contri...

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