Question 1

Explain the difference between a biotype and a serotype.

Accepted Answer

A)  A biotype is the living type of microorganism identified,while the serotype is an individual's type of blood serum.
B)  A biotype is the type of biological environment a microbe will grow in,while the serotype is the type of blood serum that the microbe can grow in.
C)  A biotype is the particular phenotypic traits and characteristic structures of a biological microorganism,while the serotype is the list of molecules the microbe is able to make and secrete into the serum of an infected individual.
D)  A biotype is the biochemical profile of a particular microorganism,while the serotype is the difference in its surface structures/antigens that will lead to separate immune responses from an organism (characterized by presence of different antibodies in the individual's serum) .E) A) and B)
F) None of the above

Question 2

The name Lactococcus (Streptococcus) lactis

Accepted Answer

A)  indicates that the subgenus is Streptococcus.
B)  indicates that the family is Lactococcus.
C)  indicates that Streptococcus is the old genus name.
D)  indicates that Lactococcus is the old class name.E) A) and D)
F) C) and D)

Question 3

Sequencing of rRNA is useful for

Accepted Answer

A)  determining evolutionary relationships.
B)  determining protein sequences.
C)  identification of unknown bacteria.
D)  serological relationships.
E)  determining evolutionary relationships AND identification of unknown bacteria.F) None of the above
G) C) and E)

Question 4

The more closely related two organisms are,

Accepted Answer

A)  the less they look alike.
B)  the more similar the nucleic acid sequence.
C)  the less similar the nucleic acid sequence.
D)  the more they are phenotypically similar.
E)  the more similar the nucleic acid sequence AND the more they are phenotypically similar.F) A) and B)
G) A) and C)

Question 5

In higher organisms,successful mating can occur between members of the same

Accepted Answer

A)  genus.
B)  species.
C)  class.
D)  order.E) B) and C)
F) All of the above

Question 6

The three domain classification scheme uses

Accepted Answer

A)  order,phylum,class.
B)  plants,animals,bacteria.
C)  Protista,Prokaryotae,Fungi.
D)  Archaea,Bacteria,Eukarya.E) A) and C)
F) None of the above

Question 7

Media that changes color as a result of the biochemical activity of growing bacteria

Accepted Answer

A)  usually contain a pH indicator in the media.
B)  usually contain blood.
C)  usually require the addition of various reagents before the color is evident.
D)  is due to a breakdown of a colorless reagent.E) B) and D)
F) All of the above

Question 8

Which of the rRNA molecules has proven the most useful in taxonomy/identification?

Accepted Answer

A)  5S
B)  16S
C)  23S
D)  80SE) None of the above
F) All of the above

Question 9

From most general to most specific,which is the correct order?

Accepted Answer

A)  Phylum,class,kingdom,order,family,genus,species
B)  Kingdom,phylum,class,order,family,genus,species
C)  Kingdom,phylum,family,class,order,genus,species
D)  Kingdom,order,family,genus,phylum,class,speciesE) All of the above
F) A) and B)

Question 10

Phage typing

Accepted Answer

A)  is useful for determining eukaryotic cell types.
B)  is used to extract DNA from cells.
C)  is used to distinguish bacterial strains.
D)  is dependent on the type of eukaryotic cell.
E)  is used to distinguish bacterial strains AND is dependent on the type of eukaryotic cell.F) D) and E)
G) C) and D)

Question 11

Size and shape may allow one to differentiate between a bacterium,fungus,or protozoan.

Accepted Answer

A) True 
 B)False

Question 12

Phenotypically identical bacteria

Accepted Answer

A)  look the same.
B)  are genetically exactly the same.
C)  may be told apart by DNA sequence analysis.
D)  may not be told apart by any means.
E)  look the same AND may be told apart by DNA sequence analysis.F) C) and D)
G) B) and E)

Question 13

Very often clinically relevant information may be obtained by examining

Accepted Answer

A)  a wet mount.
B)  the size and shape of the organism.
C)  the sequence of proteins.
D)  the transformation ability.
E)  a wet mount AND the size and shape of the organism.F) A) and C)
G) A) and E)

Question 14

Mycobacterium tuberculosis is one of the few species of bacteria that

Accepted Answer

A)  are encapsulated.
B)  stain Gram-negative.
C)  are acid fast.
D)  stain Gram-positive.E) A) and B)
F) All of the above

Exam 10: Identification and Classification of Prokaryotic Organisms

Very often clinically relevant information may be obtained by examining

Correct Answer
verified

Mycobacterium tuberculosis is one of the few species of bacteria that

Correct Answer
verified

Explain the difference between a biotype and a serotype.

Correct Answer
verified

Size and shape may allow one to differentiate between a bacterium,fungus,or protozoan.

Correct Answer
verified

Media that changes color as a result of the biochemical activity of growing bacteria

Correct Answer
verified

In higher organisms,successful mating can occur between members of the same

Correct Answer
verified

Sequencing of rRNA is useful for

Correct Answer
verified

The more closely related two organisms are,

Correct Answer
verified

Phenotypically identical bacteria

Correct Answer
verified

From most general to most specific,which is the correct order?

Correct Answer
verified

Phage typing

Correct Answer
verified

The name Lactococcus (Streptococcus) lactis

Correct Answer
verified

The three domain classification scheme uses

Correct Answer
verified

Which of the rRNA molecules has proven the most useful in taxonomy/identification?

Correct Answer
verified

Exam 10: Identification and Classification of Prokaryotic Organisms

Very often clinically relevant information may be obtained by examining

Correct AnswerverifiedShow Answer

Mycobacterium tuberculosis is one of the few species of bacteria that

Correct AnswerverifiedShow Answer

Explain the difference between a biotype and a serotype.

Correct AnswerverifiedShow Answer

Size and shape may allow one to differentiate between a bacterium,fungus,or protozoan.

Correct AnswerverifiedShow Answer

Media that changes color as a result of the biochemical activity of growing bacteria

Correct AnswerverifiedShow Answer

In higher organisms,successful mating can occur between members of the same

Correct AnswerverifiedShow Answer

Sequencing of rRNA is useful for

Correct AnswerverifiedShow Answer

The more closely related two organisms are,

Correct AnswerverifiedShow Answer

Phenotypically identical bacteria

Correct AnswerverifiedShow Answer

From most general to most specific,which is the correct order?

Correct AnswerverifiedShow Answer

Phage typing

Correct AnswerverifiedShow Answer

The name Lactococcus (Streptococcus) lactis

Correct AnswerverifiedShow Answer

The three domain classification scheme uses

Correct AnswerverifiedShow Answer

Which of the rRNA molecules has proven the most useful in taxonomy/identification?

Correct AnswerverifiedShow Answer

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