Question 1

Which of the following is not true of the outer membrane?

Accepted Answer

A)   The uppermost layer is made of lipopolysaccharide.
B)   The lipid portion of the lipopolysaccharide layer is termed endotoxin.
C)   Gram-positive bacteria have an outer membrane.
D)   The innermost layer is a phospholipid bilayer.
E)   Porins create channels through the outer membrane.F) All of the above
G) A) and B)

Question 2

A patient has a serious respiratory infection.A sputum sample yielded a bacterium that did not have any peptidoglycan.You hypothesize that the identity of this microbe could possibly be ______.

Accepted Answer

A)   Streptococcus pneumoniae
B)   Mycobacterium tuberculosis
C)   Borrelia burgdorferi
D)   Staphylococcus aureus
E)   Mycoplasma pneumoniaeF) B) and C)
G) A) and E)

Question 3

All bacterial cells have ______.

Accepted Answer

A)   an S-layer
B)   flagella
C)   the ability to produce endospores
D)   capsules
E)   a chromosomeF) A) and B)
G) A) and C)

Question 4

The division of microbes termed the Firmicutes have a cell wall type best described as ______.

Accepted Answer

A)   gram-positive
B)   archaeal
C)   lacking a cell wall
D)   gram-negativeE) None of the above
F) A) and B)

Question 5

Both gram-positive and gram-negative cells have outer membranes.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following bacteria is not closely related to the others?

Accepted Answer

A)   Salmonella enterica subsp. enterica
B)   Salmonella enterica subsp. indica
C)   Salmonella bongori
D)   Salmonella enterica subsp. ArizonaeE) A) and B)
F) A) and C)

Question 7

Which external structure protects bacteria from phagocytosis?

Accepted Answer

A)   Cell membrane
B)   Capsule
C)   Fimbriae
D)   Slime layerE) C) and D)
F) A) and B)

Question 8

If you observe rod-shaped,pink cells on a slide that had just been Gram stained,you can assume that their cell envelope contains endotoxin.
2-20-13

Accepted Answer

A) True 
 B)False

Question 9

The chromosome in bacteria and archaea

Accepted Answer

A)   contains all the cell's plasmids.
B)   is located in the cell membrane.
C)   forms a single linear strand of DNA.
D)   is part of the nucleoid.E) A) and C)
F) B) and C)

Question 10

Which of the following properties are shared by both bacteria and archaea?

Accepted Answer

A)   Single, circular chromosome
B)   Method of DNA compaction
C)   Cell wall polysaccharides
D)   Ester linkages in fatty acidsE) A) and B)
F) None of the above

Question 11

Lipopolysaccharide is an important cell envelope component of ______.

Accepted Answer

A)   acid-fast bacteria
B)   gram-positive bacteria
C)   gram-negative bacteria
D)   mycoplasmas
E)   protoplastsF) A) and E)
G) C) and E)

Question 12

Halobacterium salinarum lives in and requires a high salt concentration.This is an example of an archaeon described as a ______.

Accepted Answer

A)   barophile
B)   halophile
C)   thermophile
D)   psychrophileE) C) and D)
F) B) and C)

Question 13

Two functions of bacterial appendages are ______ and ______.

Accepted Answer

A)   attachment; motility
B)   motility; energy production
C)   antibiotic resistance; motility
D)   attachment; energy productionE) B) and C)
F) None of the above

Question 14

Magnetosomes are

Accepted Answer

A)   infoldings of the cell membrane.
B)   found in all bacteria and some archaea.
C)   responsible for the heat resistance of endospores.
D)   also termed metachromatic granules.
E)   composed of magnetic iron oxide particles.F) A) and B)
G) B) and D)

Exam 4: Bacteria and Archaea

Which of the following properties are shared by both bacteria and archaea?

Correct Answer
verified

Lipopolysaccharide is an important cell envelope component of ______.

Correct Answer
verified

Both gram-positive and gram-negative cells have outer membranes.

Correct Answer
verified

Which of the following is not true of the outer membrane?

Correct Answer
verified

Two functions of bacterial appendages are and .

Correct Answer
verified

All bacterial cells have ______.

Correct Answer
verified

Which external structure protects bacteria from phagocytosis?

Correct Answer
verified

Halobacterium salinarum lives in and requires a high salt concentration.This is an example of an archaeon described as a ______.

Correct Answer
verified

If you observe rod-shaped,pink cells on a slide that had just been Gram stained,you can assume that their cell envelope contains endotoxin. 2-20-13

Correct Answer
verified

Magnetosomes are

Correct Answer
verified

The chromosome in bacteria and archaea

Correct Answer
verified

A patient has a serious respiratory infection.A sputum sample yielded a bacterium that did not have any peptidoglycan.You hypothesize that the identity of this microbe could possibly be ______.

Correct Answer
verified

Which of the following bacteria is not closely related to the others?

Correct Answer
verified

The division of microbes termed the Firmicutes have a cell wall type best described as ______.

Correct Answer
verified

Exam 4: Bacteria and Archaea

Which of the following properties are shared by both bacteria and archaea?

Correct AnswerverifiedShow Answer

Lipopolysaccharide is an important cell envelope component of ______.

Correct AnswerverifiedShow Answer

Both gram-positive and gram-negative cells have outer membranes.

Correct AnswerverifiedShow Answer

Which of the following is not true of the outer membrane?

Correct AnswerverifiedShow Answer

Two functions of bacterial appendages are ______ and ______.

Correct AnswerverifiedShow Answer

All bacterial cells have ______.

Correct AnswerverifiedShow Answer

Which external structure protects bacteria from phagocytosis?

Correct AnswerverifiedShow Answer

Halobacterium salinarum lives in and requires a high salt concentration.This is an example of an archaeon described as a ______.

Correct AnswerverifiedShow Answer

If you observe rod-shaped,pink cells on a slide that had just been Gram stained,you can assume that their cell envelope contains endotoxin. 2-20-13

Correct AnswerverifiedShow Answer

Magnetosomes are

Correct AnswerverifiedShow Answer

The chromosome in bacteria and archaea

Correct AnswerverifiedShow Answer

A patient has a serious respiratory infection.A sputum sample yielded a bacterium that did not have any peptidoglycan.You hypothesize that the identity of this microbe could possibly be ______.

Correct AnswerverifiedShow Answer

Which of the following bacteria is not closely related to the others?

Correct AnswerverifiedShow Answer

The division of microbes termed the Firmicutes have a cell wall type best described as ______.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Two functions of bacterial appendages are and .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified