UTA MICROBIOLOGY EXAM 2 (CH. 4,5,6) PRACTICE TEST QUESTIONS AND ANSWERS 2026 UPDATED VERSION VERIFIED A+

UTA MICROBIOLOGY EXAM 2 (CH.
4,5,6) PRACTICE TEST QUESTIONS
AND ANSWERS 2026 UPDATED
VERSION VERIFIED A+
◉ Describe mutualism
Answer: Both organisms benefit


◉ Describe amensalism
Answer: One organism is harmed, the other is unaffected


◉ Describe commensalism
Answer: one organism benefits and the other is unaffected


◉ Describe neutralism
Answer: both organisms are unaffected


◉ Describe parasitism
Answer: One organism benefits and the other is harmed


◉ What is the difference between a resident and transient microbe?
Answer: A resident microbe

,◉ What does the gram negative phyla include?
Answer: -proteobacteria
-spirochete
-FCB group
-planctomycetes


◉ What does the gram postivie phylum include?
Answer: -actinobacteria
-firmicutes


◉ What makes up the bulk of all gram negative bacteria?
Answer: Proteobacteria
-alpha
-beta
-gamma
-delta
-epsilon


◉ Define oligotrophs
Answer: organisms that live in a low nutrient environment


◉ What does it mean for a microbe to be an obligate intracellular
organism?

, Answer: the microbe MUST BE in a host cell for metabolic function to
occur


◉ What is the causative agent of Rocky Mountain spotted fever and
typhus fever?
Answer: Rickettsia spp.


◉ What is the causative agent for lymphogranuloma venereum (STD)?
Answer: Chlamydia spp.


◉ What is the class of the Rickettsia spp.?
Answer: Alphaproteobacteria


◉ What is the class of Chlamydia spp.?
Answer: Alphaproteobacteria


◉ Which class is full of oligotrophs?
Answer: Alphaproteobacteria


◉ What is the causative agent for bacterial meningitis?
Answer: Neisseria meningitides


◉ What is the causative agent for gonorrhea (STD)?
Answer: Neisseria gonnorhea