MICROBIOLOGY 2460 EXAM 2 LATEST 2026 UPDATED
QUESTIONS AND VERIFIED 100% SOLUTIONS (2026/2027) |A+
GRADED |GUARANTEED PASS
____, _____, and ______ are classified together as a phylum called the ____ group - Answers -
Cytophaga, Fusobacterium and Bacteroids/ CFB
What is cytophaga? - Answers -Aquatic bacteria with the gliding motility
What is fusobacteria? - Answers -inhabit the human mouth and may cause severe infectious
diseases
What is bacteriods? - Answers -present in vast numbers in the human gut, most of them being
mutualistic but some are pathogenic
_____ are aquatic bacteria that reproduce by budding; they may form large colonies, and
develop a holdfast. - Answers -Phototrophic
phototropic bacteria are not a taxon but, rather, a group categorized by their ability to use the
energy of _____. - Answers -sunlight
___ bacteria perform anoxygenic photosynthesis, using sulfur compounds as donors of
electrons, whereas ____ bacteria use organic compounds as donors of electrons - Answers -
sulfur/nonsulfur
1|Page
,some phototrophic bacteria are able to fix ____, providing the usable forms of ____ to other
organisms - Answers -nitrogen/nitrogen
_____ are oxygen-producing bacteria thought to have played a critical role in the forming of the
earth's atmosphere. - Answers -cyanobacteria
_____ ____ ____ are a very large and diverse group microorganisms. - Answers -gram positive
bacteria
gram positive bacteria are classified into ___ based on the prevalence of guanine and cytosine
in their genome - Answers -high G+C gram positive and low G+C gram positive bacteria
actinobacteria is the ____ ____ of the class of high G+C - Answers -taxonomic name
Actinomyces, Arthrobacter, Corynebacterium, Frankia, Gardnerella, Micrococcus,
Mycobacterium, Nocardia, Propionibacterium - Answers -High G+C
examples of high g+c - Answers -Mycobacterium tuberculosis, which causes tuberculosis; M.
leprae, which causes leprosy (Hansen's disease); and Corynebacterium diphtheriae, which
causes diphtheria.
2|Page
, low g+c are generally obligate anaerobes and can form endospores, examples are : - Answers -C.
perfringens (gas gangrene), C. tetani (tetanus), and C. botulinum (botulism).
lactobacillales include - Answers -Enterococcus, Lactobacillus, Leuconostoc, and Streptococcus.
Bacilli is a taxonomic class of ____ G+C gram positive bacteria. - Answers -low
B.anthracis causes ____
C.cereus cases____
both are highly resistant to ____ - Answers -anthrax/infections in GI tract
antibiotics
Mycoplasma spp. are very small, ____ low g+c gram positive bacteria that lack cell walls. -
Answers -pleomorphic
____ ___ causes atypical pneumonia - Answers -M.pneumonia
___ ____ _____ are photogenically the most ancient forms of life, being the closest to the last
universal common ancestor - Answers -deeply branching bacteria
3|Page
QUESTIONS AND VERIFIED 100% SOLUTIONS (2026/2027) |A+
GRADED |GUARANTEED PASS
____, _____, and ______ are classified together as a phylum called the ____ group - Answers -
Cytophaga, Fusobacterium and Bacteroids/ CFB
What is cytophaga? - Answers -Aquatic bacteria with the gliding motility
What is fusobacteria? - Answers -inhabit the human mouth and may cause severe infectious
diseases
What is bacteriods? - Answers -present in vast numbers in the human gut, most of them being
mutualistic but some are pathogenic
_____ are aquatic bacteria that reproduce by budding; they may form large colonies, and
develop a holdfast. - Answers -Phototrophic
phototropic bacteria are not a taxon but, rather, a group categorized by their ability to use the
energy of _____. - Answers -sunlight
___ bacteria perform anoxygenic photosynthesis, using sulfur compounds as donors of
electrons, whereas ____ bacteria use organic compounds as donors of electrons - Answers -
sulfur/nonsulfur
1|Page
,some phototrophic bacteria are able to fix ____, providing the usable forms of ____ to other
organisms - Answers -nitrogen/nitrogen
_____ are oxygen-producing bacteria thought to have played a critical role in the forming of the
earth's atmosphere. - Answers -cyanobacteria
_____ ____ ____ are a very large and diverse group microorganisms. - Answers -gram positive
bacteria
gram positive bacteria are classified into ___ based on the prevalence of guanine and cytosine
in their genome - Answers -high G+C gram positive and low G+C gram positive bacteria
actinobacteria is the ____ ____ of the class of high G+C - Answers -taxonomic name
Actinomyces, Arthrobacter, Corynebacterium, Frankia, Gardnerella, Micrococcus,
Mycobacterium, Nocardia, Propionibacterium - Answers -High G+C
examples of high g+c - Answers -Mycobacterium tuberculosis, which causes tuberculosis; M.
leprae, which causes leprosy (Hansen's disease); and Corynebacterium diphtheriae, which
causes diphtheria.
2|Page
, low g+c are generally obligate anaerobes and can form endospores, examples are : - Answers -C.
perfringens (gas gangrene), C. tetani (tetanus), and C. botulinum (botulism).
lactobacillales include - Answers -Enterococcus, Lactobacillus, Leuconostoc, and Streptococcus.
Bacilli is a taxonomic class of ____ G+C gram positive bacteria. - Answers -low
B.anthracis causes ____
C.cereus cases____
both are highly resistant to ____ - Answers -anthrax/infections in GI tract
antibiotics
Mycoplasma spp. are very small, ____ low g+c gram positive bacteria that lack cell walls. -
Answers -pleomorphic
____ ___ causes atypical pneumonia - Answers -M.pneumonia
___ ____ _____ are photogenically the most ancient forms of life, being the closest to the last
universal common ancestor - Answers -deeply branching bacteria
3|Page
