Biol 2460 Chapter 4,5,6 Questions and Correct Answers
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Course
BIO 2460
Institution
BIO 2460
The term prokaryotes refers to which of the following? unicellular organisms that have no nucleus
The term microbiota refers to which of the following? all microorganisms in a certain region of the human body
Which of the following refers to the type of interaction between two prokaryotic populat...
Biol 2460 Chapter 4,5,6 Questions and
Correct Answers
The term prokaryotes refers to which of the following? ✅unicellular organisms that
have no nucleus
The term microbiota refers to which of the following? ✅all microorganisms in a certain
region of the human body
Which of the following refers to the type of interaction between two prokaryotic
populations in which one population benefits and the other is not affected?
✅commensalism
Which of the following describes Proteobacteria in domain Bacteria? ✅phylum
Which of the following Alphaproteobacteria is the cause of Rocky Mountain spotted
fever and typhus? ✅Bartonella
Class Betaproteobacteria includes all but which of the following genera?
✅Campylobacter.
Haemophilus influenzae is a common cause of which of the following? ✅upper
respiratory tract infections
Which of the following is the organelle that spirochetes use to propel themselves?
✅axial filament
Which of the following bacteria are the most prevalent in the human gut?
✅Bacteroides
Which of the following refers to photosynthesis performed by bacteria with the use of
water as the donor of electrons? ✅oxygenic
Which of the following bacterial species is classified as high G+C gram-positive?
✅Corynebacterium diphtheriae
The term "deeply branching" refers to which of the following? ✅the position in the
evolutionary tree of deeply branching bacteria
Which of these deeply branching bacteria is considered a polyextremophile?
✅Deinococcus radiodurans
, Archaea and Bacteria are most similar in terms of their ________. ✅unicellular
structure
Which of the following is true of archaea that produce methane? ✅They live in the
most extreme environments.
Among prokaryotes, there are some that can live in every environment on earth. ✅true
When prokaryotes live as interacting communities in which one population benefits to
the harm of the other, the type of symbiosis is called ________. ✅parasitism
The domain ________ does not include prokaryotes. ✅Eukarya
Pathogenic bacteria that are part of the transient microbiota can sometimes be
eliminated by ________ therapy. ✅antibiotic
Nitrogen-fixing bacteria provide other organisms with usable nitrogen in the form of
________. ✅ammonia
Rickettsias are ________ intracellular bacteria. ✅obligate
The species ________, which belongs to Epsilonproteobacteria, causes peptic ulcers of
the stomach and duodenum. ✅Helicobacter pylori
The genus Salmonella belongs to the class ________ and includes pathogens that
cause salmonellosis and typhoid fever. ✅Gammaproteobacteria
The bacterium that causes syphilis is called ________. ✅Treponema pallidum
pallidum
Bacteria in the genus Rhodospirillum that use hydrogen for oxidation and fix nitrogen
are ________ bacteria. ✅purple nonsulfur
Streptococcus is the ________ of bacteria that is responsible for many human
diseases. ✅genus
One species of Streptococcus, S. pyogenes, is a classified as a ________ pathogen
due to the characteristic production of pus in infections it causes. ✅pyogenic
Propionibacterium belongs to ________ G+C gram-positive bacteria. One of its species
is used in the food industry and another causes acne. ✅high
The length of the branches of the evolutionary tree characterizes the evolutionary
________ between organisms. ✅distance
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