Deck 1: Microbial Taxonomy

Question 1

An example of an organism's genotypic characteristic is its:

A)macroscopic morphologic structure.
B)microscopic morphologic structure.
C)nucleic acid composition.
D)antigenic properties.

Answer 1

C
The organism's nucleic acid composition-deoxyribonucleic acid (DNA)and ribonucleic acid (RNA)-is a genotypic characteristic.All of the other choices are phenotypic characteristics.

Question 2

The taxon that is composed of similar species that have several important features in common but differ sufficiently to still maintain their status as individual species is which one of the following?

A)Class
B)Order
C)Family
D)Genus

Answer 2

D
The genus is composed of similar species.

Question 3

An organism is serologically identified in the clinical laboratory.This is an example of which phenotypic property?

A)Subcellular properties
B)Antigenic properties
C)Resistant profiles
D)Nucleic acid sequence analysis

Answer 3

B
Serologic methods examine the organism's antigenic properties.

Question 4

The most basic taxonomic group that can be defined as a collection of bacterial strains that share many common physiologic and genetic features is:

A)genus.
B)species.
C)class.
D)kingdom.

Question 5

Which binomial name is correctly written?

A)Staphylococcus Aureus
B)staphylococcus aureus
C)Staphylococcus aureus
D)Staphylococcus aureus

Question 6

Taxonomy can be described as a system that:

A)classifies,names,and identifies microorganisms in a consistent manner.
B)classifies microorganisms,based on their genetic makeup.
C)classifies microorganisms,based on their phenotypic makeup.
D)classifies microorganisms,based on their cellular and colonial traits.

Question 7

Which binomial name is correctly written?

A)Escherichia coli
B)Escherichia coli
C)Escherichia coli
D)Escherichia Coli

Question 8

Species identification is based on all of the following except:

A)DNA-DNA Hybridization.
B)16sRNA sequencing.
C)Cell wall composition.
D)Colonial pigmentation.

Question 9

The use of a double genus in a microorganism's label,such as Burkholderia (Pseudomonas),indicates that the bacterium:

A)does not fit well in either group but has some characteristics of both groups.
B)is a genetic cross between the two groups.
C)has been moved from one genus (Pseudomonas)to another genus (Burkholderia).
D)has been moved from one genus (Burkholderia)to another genus (Pseudomonas).

Question 10

Colonial and microscopic morphologic properties,along with the pigmentation of colonies,would belong to a microorganism group of ________ characteristics.

A)genotypic
B)taxonomic
C)phenotypic
D)subspecies

Question 11

A bacterium that has been moved from one genus (Pseudomonas)to another genus (Burkholderia)would be correctly noted as which one of the following?

A)Pseudomonas (Burkholderia)
B)Burkholderia (Pseudomonas)
C)Pseudomonas,formerly Burkholderia
D)Burkholderia,formerly Pseudomonas

Question 12

The difference between a subspecies and biotype is:

A)a subspecies has the same genetic makeup.
B)a subspecies has a differential expression of the same genes.
C)a subspecies is genetically different than the type species.
D)a biotype and subspecies are the same.