UTA Microbiology Exam 2 Questions and
Answers | Study Guide | Grade A+
• Mutualism CORRECT ANSWER: A relationship between two species in which
both species benefit
ex. gut nutrient metabolism
• Amensalism CORRECT ANSWER: a relationship in which one organism is
harmed and the other is unaffected
ex. antimicrobial defense on skin
• Commensalism CORRECT ANSWER: A relationship between two organisms in
which one organism benefits and the other is unaffected
ex. skin cells as food source
• Nuetralism CORRECT ANSWER: When neither organism is affected
ex. spores in soil
• Parasitism CORRECT ANSWER: A relationship between two organisms in
which one benefits and the other is harmed
ex. TB, Leprosy
• microbial ecology CORRECT ANSWER: the study of the relationship between
microorganisms and their environment
• polymicrobial CORRECT ANSWER: Involving multiple distinct
microorganisms.
,• Microbiome CORRECT ANSWER: all of the microorganisms that live in a
particular environment, such as a human body
• Gram-negative phyla CORRECT ANSWER: •Proteobacteria
•Spirochete
•CFB group
•Planctomycetes
•Phototrophic bacteria
• gram postive phyla CORRECT ANSWER: •Actinobacteria
•Firmicutes
• Atypical bacteria CORRECT ANSWER: •Tenericutes
• alphproteobacteria CORRECT ANSWER: •Chlamydia & Rickettsia - Obligate
intracellular and must have host to be metabolically active
• Oligotrophs CORRECT ANSWER: Require low nutrient levels
• Rickettsia CORRECT ANSWER: -gram negative, highly pleomorphic
-Obligate intracellular bacteria; transmitted by ticks; may cause Rocky Mountain
spotted fever and typhus
• Chlamydia CORRECT ANSWER: -Gram-negative, coccoid or ovoid bacterium
-Obligatory intracellular bacteria; some cause chlamydia, trachoma, and
pneumonia
, • Betaproteobacteria CORRECT ANSWER: -Bordetella & Neisseria
-eutrophs- require many nutrients
• Eutrophs CORRECT ANSWER: require many nutrients
• Bordetella CORRECT ANSWER: -A small, gram-negative coccobacillus
-Aerobic, very fastidious; B. pertussis causes pertussis (whooping cough)
• Neisseria CORRECT ANSWER: -Gram-negative, coffee bean-shaped coccus
forming pairs
-Require moisture and high concentration of carbon dioxide; oxidase positive,
grow on chocolate agar; pathogenic species cause gonorrhea and meningitis
• Gammaproteobacteria CORRECT ANSWER: -Largest and most diverse class of
proteobacteria
-Pseudomonas, Pasteurella, Haemophilus, Vibrio, Legionella, Enterobacter family
• Pseudomonas aeruginosa CORRECT ANSWER: -Gram-negative bacillus
-Aerobic; versatile; produce yellow and blue pigments, making them appear green
in culture; opportunistic, antibiotic-resistant pathogens may cause wound
infections, hospital-acquired infections, and secondary infections in patients with
cystic fibrosis
• Pasteurella haemolytica CORRECT ANSWER: causative agent for severe
pneumonia in animals
• Haemophilus influenzae CORRECT ANSWER: -Gram-negative bacillus
-causative agent for upper & lower respiratory infections (does not cause influenza
Answers | Study Guide | Grade A+
• Mutualism CORRECT ANSWER: A relationship between two species in which
both species benefit
ex. gut nutrient metabolism
• Amensalism CORRECT ANSWER: a relationship in which one organism is
harmed and the other is unaffected
ex. antimicrobial defense on skin
• Commensalism CORRECT ANSWER: A relationship between two organisms in
which one organism benefits and the other is unaffected
ex. skin cells as food source
• Nuetralism CORRECT ANSWER: When neither organism is affected
ex. spores in soil
• Parasitism CORRECT ANSWER: A relationship between two organisms in
which one benefits and the other is harmed
ex. TB, Leprosy
• microbial ecology CORRECT ANSWER: the study of the relationship between
microorganisms and their environment
• polymicrobial CORRECT ANSWER: Involving multiple distinct
microorganisms.
,• Microbiome CORRECT ANSWER: all of the microorganisms that live in a
particular environment, such as a human body
• Gram-negative phyla CORRECT ANSWER: •Proteobacteria
•Spirochete
•CFB group
•Planctomycetes
•Phototrophic bacteria
• gram postive phyla CORRECT ANSWER: •Actinobacteria
•Firmicutes
• Atypical bacteria CORRECT ANSWER: •Tenericutes
• alphproteobacteria CORRECT ANSWER: •Chlamydia & Rickettsia - Obligate
intracellular and must have host to be metabolically active
• Oligotrophs CORRECT ANSWER: Require low nutrient levels
• Rickettsia CORRECT ANSWER: -gram negative, highly pleomorphic
-Obligate intracellular bacteria; transmitted by ticks; may cause Rocky Mountain
spotted fever and typhus
• Chlamydia CORRECT ANSWER: -Gram-negative, coccoid or ovoid bacterium
-Obligatory intracellular bacteria; some cause chlamydia, trachoma, and
pneumonia
, • Betaproteobacteria CORRECT ANSWER: -Bordetella & Neisseria
-eutrophs- require many nutrients
• Eutrophs CORRECT ANSWER: require many nutrients
• Bordetella CORRECT ANSWER: -A small, gram-negative coccobacillus
-Aerobic, very fastidious; B. pertussis causes pertussis (whooping cough)
• Neisseria CORRECT ANSWER: -Gram-negative, coffee bean-shaped coccus
forming pairs
-Require moisture and high concentration of carbon dioxide; oxidase positive,
grow on chocolate agar; pathogenic species cause gonorrhea and meningitis
• Gammaproteobacteria CORRECT ANSWER: -Largest and most diverse class of
proteobacteria
-Pseudomonas, Pasteurella, Haemophilus, Vibrio, Legionella, Enterobacter family
• Pseudomonas aeruginosa CORRECT ANSWER: -Gram-negative bacillus
-Aerobic; versatile; produce yellow and blue pigments, making them appear green
in culture; opportunistic, antibiotic-resistant pathogens may cause wound
infections, hospital-acquired infections, and secondary infections in patients with
cystic fibrosis
• Pasteurella haemolytica CORRECT ANSWER: causative agent for severe
pneumonia in animals
• Haemophilus influenzae CORRECT ANSWER: -Gram-negative bacillus
-causative agent for upper & lower respiratory infections (does not cause influenza
