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Rhizobium is an organism typically used in the field of __________.

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Bacteria that use oxygen,but only at low concentration,are classified as


A) obligate aerobes.
B) microaerophiles.
C) obligate anaerobes.
D) aerotolerant anaerobes.

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

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Match the description below with the correct item from this list. -Rocky Mountain spotted fever


A) Rickettsia rickettsii
B) Chlamydia psittaci
C) Bordetella pertussis
D) Helicobacter pylori
E) Salmonella
F) Neisseria gonorrhoeae
G) Clostridium perfringens

H) C) and E)
I) A) and G)

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Bacteria whose overall shape is spherical or nearly spherical are referred to as __________.

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Legionella and Neisseria are examples of


A) facultative anaerobic gram-negative rods.
B) gram-negative aerobic rods and cocci.
C) spirochetes.
D) anaerobic gram-negative cocci.

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

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Staphylococci are _______________ facultative anaerobes.

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The time required for doubling of the population is called the________________ .

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Match the description below with the correct item from this list. -Bacteria with a spherical shape


A) Psychrotrophs
B) Thermophiles
C) Chemoautotrophs
D) Chemoheterotrophs
E) Sarcinae
F) Tetrads
G) Vibrios
H) Spirillium
I) Cocci

J) C) and F)
K) E) and G)

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Match the description below with the correct item from this list. -Whooping cough


A) Rickettsia rickettsii
B) Chlamydia psittaci
C) Bordetella pertussis
D) Helicobacter pylori
E) Salmonella
F) Neisseria gonorrhoeae
G) Clostridium perfringens

H) C) and D)
I) A) and G)

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Staphylococci and streptococci are best classified in the group of


A) gram-positive cocci.
B) gram-negative cocci.
C) gram-negative aerobic rods and cocci.
D) anaerobic gram-negative cocci.

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

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Bacteria that prefer high levels of salt in their growing environment are referred to as


A) calciphiles.
B) halophiles.
C) osmophiles.
D) mesophiles.

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

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Match the description below with the correct item from this list. -Gonorrhoea


A) Rickettsia rickettsii
B) Chlamydia psittaci
C) Bordetella pertussis
D) Helicobacter pylori
E) Salmonella
F) Neisseria gonorrhoeae
G) Clostridium perfringens

H) D) and E)
I) B) and D)

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Bacteria that use organic compounds as the source of both carbon and energy are referred to as


A) photoautotrophs.
B) chemoautotrophs.
C) photoheterotrophs.
D) chemoheterotrophs.

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

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Microorganisms that acquire energy from light are called __________.

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