MICROBIOLOGY 2420 EXAM 3 REVIEW (QUESTIONS
AND ANSWERS ) 2025/2026 RATED 100% CORRECT!!
Which one of the following microorganisms was once called blue-green algae?
Mycoplasmas
Cyanobacteria
Chlamydiae
Rickettsia Answer - Cyanobacteria
Which one of the following is a prokaryote without a cell wall?
Mycoplasmas
Virus
Rickettsia
Cyanobacterium Answer - Mycoplasmas
Which one of the following microorganisms has its own kingdom in the five-
kingdom of classification?
Viruses
Algae
Bacteria
,Fungi Answer - Fungi
All of the following are considered eukaryotes except:
Archea
Fungi
Protozoa
Humans Answer - -Archea
The binomial name of a microbe is composed of its _____.
kingdom and genus names
genus name and a species modifier
family and class names
genus and family names Answer - -Genus name and species modifier
The science of classification is generally known as _____.
nomenclature
taxonomy
morphology
dichotomy Answer - -Taxonomy
Classification is necessary to ______.
establish criteria for identifying organisms
, arrange related organisms into groups
provide information on how organisms evolved
All of the above Answer - -All of the above
In the name Escherichia coli, Escherichia refers to the ________ of the bacteria.
class
phylum
species
genus Answer - -Genus
Which of the following organisms shows the proper use of binomial
nomenclature?
escherichia coli
Escherichia Coli
Escherichia coli
escherichia Coli Answer - -Excherichia coli - Capital letter Genus and small
capital species
Which of the following levels of classification would contain the greatest
number of organisms?
Phylum
AND ANSWERS ) 2025/2026 RATED 100% CORRECT!!
Which one of the following microorganisms was once called blue-green algae?
Mycoplasmas
Cyanobacteria
Chlamydiae
Rickettsia Answer - Cyanobacteria
Which one of the following is a prokaryote without a cell wall?
Mycoplasmas
Virus
Rickettsia
Cyanobacterium Answer - Mycoplasmas
Which one of the following microorganisms has its own kingdom in the five-
kingdom of classification?
Viruses
Algae
Bacteria
,Fungi Answer - Fungi
All of the following are considered eukaryotes except:
Archea
Fungi
Protozoa
Humans Answer - -Archea
The binomial name of a microbe is composed of its _____.
kingdom and genus names
genus name and a species modifier
family and class names
genus and family names Answer - -Genus name and species modifier
The science of classification is generally known as _____.
nomenclature
taxonomy
morphology
dichotomy Answer - -Taxonomy
Classification is necessary to ______.
establish criteria for identifying organisms
, arrange related organisms into groups
provide information on how organisms evolved
All of the above Answer - -All of the above
In the name Escherichia coli, Escherichia refers to the ________ of the bacteria.
class
phylum
species
genus Answer - -Genus
Which of the following organisms shows the proper use of binomial
nomenclature?
escherichia coli
Escherichia Coli
Escherichia coli
escherichia Coli Answer - -Excherichia coli - Capital letter Genus and small
capital species
Which of the following levels of classification would contain the greatest
number of organisms?
Phylum
