Question 1

A phylogenetic tree shows ________. (Select all that apply)

Accepted Answer

A)   a branching diagram
B)   evolutionary relationships between organisms
C)   proposed relatedness to a common ancestor
D)   groupings of organisms with similar physical features

Question 2

The image shown is ________-shaped bacteria.

Accepted Answer

A)   filamentous
B)   hyphal
C)   appendaged
D)   fusiform

Question 3

Which bacterial organelle is one circular strand of DNA?

Accepted Answer

A)   Nucleoid
B)   Peptidoglycan
C)   70S Ribosome
D)   Inclusion body

Question 4

How are species-specific arrangements of bacterial cells produced?

Accepted Answer

A)   Daughter cells dividing in different planes and remaining attached to each other
B)   Daughter cells dividing in the same plane and remaining attached to each other
C)   Daughter cells dividing in the same plane but separating
D)   Daughter cells dividing in the same plane but only partially separating

Question 5

Chemicals produced by the human body will destroy bacterial cell walls. An example of this is ________.

Accepted Answer

A)   vancomycin
B)   penicillin
C)   lysozyme
D)   lipopolysaccharide

Question 6

Internal structures of bacteria do not include ________.

Accepted Answer

A)   nucleoid
B)   ribosomes
C)   mitochondria
D)   cytoskeleton

Question 7

How does peptidoglycan in Gram-negative bacterial cells differ from that in Gram-positive bacterial cells? (Select all that apply)

Accepted Answer

A)   There are only 1 to 3 layers of glycan sheets
B)   Teichoic acids are present
C)   There is a direct crosslinkage between tetrapeptide side chains
D)   There is an outer membrane

Question 8

Glycogen granules in a bacterial cell ________.

Accepted Answer

A)   allow aquatic cyanobacteria to stay afloat
B)   provide phosphorus for synthesis of ATP
C)   store a carbohydrate source for synthesis of ATP
D)   converts CO2 into glucose

Question 9

Which of the following statements is not correct?

Accepted Answer

A)   The bacterial flagellum is made of a filament, hook and basal body.
B)   Internal flagella called axial filaments enable spirochetes to move through thick mucous.
C)   Bacteria with flagella are less pathogenic because they cannot invade host tissues.
D)   Flagella must be coated with special stains to increase their diameter if they are to be seen with a light microscope.

Question 10

Mycobacteria are ________.

Accepted Answer

A)   gram positive
B)   gram negative
C)   wall-less
D)   acid fast

Question 11

The literal translation of the term bacillus is ________.

Accepted Answer

A)   coil
B)   wave
C)   staff
D)   kernel

Question 12

The slime layer functions to ________.

Accepted Answer

A)   prevent phagocytosis
B)   enhance attachment to surfaces
C)   protect from desiccations
D)   prevent osmotic lysis

Question 13

________ use axial filaments for movement.

Accepted Answer

A)   Spirochetes
B)   Spirilla-shaped
C)   Fusiform-shaped
D)   Appendaged bacteria

Question 14

The term that describes either a single flagellum or tuft of flagella found at both ends of the cell is ________.

Accepted Answer

A)   monotrichous
B)   amphitrichous
C)   lophotrichous
D)   peritrichous

Question 15

Which of the following represents a mutualistic symbiotic relationship?

Accepted Answer

A)   Rhizobium and bean roots
B)   Enterococcus in colon
C)   Agrobacterium tumefaciens and plant cells
D)   Zika virus and mosquitos

Question 16

Ureaplasmas and Mycoplasmas ________.(Select all that apply)

Accepted Answer

A)   have no cell wall
B)   are intracellular pathogens
C)   can only live in hypotonic environments
D)   stain gram positive

Question 17

Which of the following statements about the bacterial chromosome is incorrect?

Accepted Answer

A)   It has between 0.5-10 million base pairs.
B)   It is contained in the nucleus.
C)   Transcription only occurs on the outer surface of the coiled chromosome.
D)   It contains about 800 genes are needed to produce essential cellular enzymes and structural components.

Question 18

Which bacterial term means kernel?

Accepted Answer

A)   Bacillus
B)   Vibrio
C)   Spirillum
D)   Coccus

Question 19

The image shown is ________-shaped bacteria.

Accepted Answer

A)   staphylococcus
B)   streptococcus
C)   tetrad
D)   sarcinae

Question 20

Clinical classification of bacteria uses these features to develop a dichotomous key for rapid identification of a pathogenic bacterium: ________. (Select all that apply)

Accepted Answer

A)   cell shape and arrangement
B)   gram staining and acid fast staining reactions
C)   oxygen utilization
D)   methane production

Exam 5: Prokaryote Organisms

How does peptidoglycan in Gram-negative bacterial cells differ from that in Gram-positive bacterial cells? (Select all that apply)

Correct AnswerverifiedShow Answer

Which bacterial term means kernel?

Correct AnswerverifiedShow Answer

Internal structures of bacteria do not include ________.

Correct AnswerverifiedShow Answer

How are species-specific arrangements of bacterial cells produced?

Correct AnswerverifiedShow Answer

Clinical classification of bacteria uses these features to develop a dichotomous key for rapid identification of a pathogenic bacterium: ________. (Select all that apply)

Correct AnswerverifiedShow Answer

________ use axial filaments for movement.

Correct AnswerverifiedShow Answer

The slime layer functions to ________.

Correct AnswerverifiedShow Answer

Which of the following statements about the bacterial chromosome is incorrect?

Correct AnswerverifiedShow Answer

The literal translation of the term bacillus is ________.

Correct AnswerverifiedShow Answer

Which bacterial organelle is one circular strand of DNA?

Correct AnswerverifiedShow Answer

Which of the following statements is not correct?

Correct AnswerverifiedShow Answer

The term that describes either a single flagellum or tuft of flagella found at both ends of the cell is ________.

Correct AnswerverifiedShow Answer

The image shown is ________-shaped bacteria.

Correct AnswerverifiedShow Answer

Glycogen granules in a bacterial cell ________.

Correct AnswerverifiedShow Answer

Mycobacteria are ________.

Correct AnswerverifiedShow Answer

Ureaplasmas and Mycoplasmas ________.(Select all that apply)

Correct AnswerverifiedShow Answer

Which of the following represents a mutualistic symbiotic relationship?

Correct AnswerverifiedShow Answer

Chemicals produced by the human body will destroy bacterial cell walls. An example of this is ________.

Correct AnswerverifiedShow Answer

A phylogenetic tree shows ________. (Select all that apply)

Correct AnswerverifiedShow Answer

The image shown is ________-shaped bacteria.

Correct AnswerverifiedShow Answer

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