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Biology, 6/e
Author Dr. George B. Johnson, Washington University
Author Dr. Peter H. Raven, Missouri Botanical Gardens & Washington University
Contributor Dr. Susan Singer, Carleton College
Contributor Dr. Jonathan Losos, Washington University
Bacteria

Multiple Choice Quiz

Please answer all questions



1

A gliding motion, the mechanism of which is not understood, is a characteristic of
A)spirilla
B)streptococci
C)filamentous bacteria
D)bacilli
2

Bacterial flagella
A)undulate
B)are of a 9+2 structure
C)occur mostly on cocci
D)are made of a single protein fiber
3

Bacterial ribosomes
A)are unable to synthesize proteins in the presence of tetracycline
B)are larger than eukaryotic ribosomes
C)have the same RNA contents as in eukaryotic ribosomes
D)contain the same forms of proteins as in eukaryotic ribosomes
4

Plasmids are best thought of as
A)escaped fragments of eukaryotic DNA
B)excised portions of bacterial chromosomes
C)self replicating RNA
D)escaped pieces of mitochondrial DNA
5

Bacterial flagella are powered by
A)the sodium-potassium pump
B)a proton pump
C)degradation of ATP
D)changes in osmotic pressure
6

The first stage of _______________ is characterized by the appearance of a chancre.
A)gonorrhea
B)genital herpes
C)syphilis
D)chlamydia
E)HIV
7

Rod shaped bacteria are called
A)bacilli
B)streptococci
C)cocci
D)staphylobacilli
E)spirilla
8

Some bacteria form a thick-walled _______________ in response to poor nutrient conditions.
A)endospore
B)capsule
C)sheath
D)pilus
E)autospore
9

The disease caused by _______________ is sometimes called the "silent STD."
A)Herpes simplex type 2
B)Chlamydia trachomatis
C)Neisseria gonorrheae
D)Treponema pallidum
E)Streptococcus mutans
10

Bacteria normally contain their genome in
A)a nucleoid region
B)an endospore
C)a plasmid
D)a pilus
E)a heterospore
11

Which of the following is a product for which bacteria are not employed?
A)bread
B)cheese
C)lactic acid
D)antibiotics
E)turpentine
12

Chemoautotrophic bacteria include
A)halophiles
B)myxobacteria
C)spirochetes
D)sulfur bacteria
E)cyanobacteria
13

Nitrifying bacteria are an example of
A)photoautotrophs
B)photoheterotrophs
C)chemoheterotrophs
D)chemoautotrophs
E)none of the above
14

Plant diseases such as citrus canker are caused by
A)Enterobacteria
B)Actinomyces
C)Rickettsia
D)Spirochaetes
E)Pseudomonads
15

A major portion of the world's natural gas reserves were produced by
A)primitive protists
B)anaerobic fungi
C)Actinomyces
D)ancient viruses
E)Archaebacteria
16

We can expect that one out of every _______________ bacteria have a mutant characteristic.
A)100
B)200
C)500
D)1000
E)5000
17

Which of the following belong to the Eubacteria?
A)methanogens
B)halophiles
C)thermophiles
D)cyanobacteria
E)sulfur reducing bacteria
18

All bacteria listed below are heterotrophic bacteria except
A)Actinomyces
B)Enterobacteria
C)Cyanobacteria
D)Pseudomonads
E)Spirochaetes
19

Pelvic inflammatory disease (PID) in women is caused by
A)Leptotrichia buccalis
B)Treponema pallidum
C)Chlalmydia trachomatis
D)Bacillus anthracis
E)Borelia bergdorferi
20

The _______________ form a colony that approaches but does not reach true multicellularity.
A)Enterobacteria
B)Rickettsia
C)Pseudomonads
D)gliding bacteria
E)Spirochaetes
21

In 1997 _______________ was the leading cause of death by a single infectious agent world-wide.
A)TB
B)smallpox
C)cholera
D)diphtheria
E)plague
22

Genetic recombination occurs in bacteria through the transfer of
A)pili
B)plasmids
C)endospores
D)autospores
E)gametes
23

Gram-negative bacteria are resistant to the gram stain because of the presence of a large _______________ in an outer membrane layer.
A)glycoprotein
B)polymer
C)lipopolysaccharide
D)polysaccharide
E)lipoprotein
24

Cell division in bacteria takes place mainly by
A)conjugation
B)binary fission
C)sporulation
D)fragmentation
E)mitosis
25

Organisms that obtain their energy by oxidizing inorganic chemical sources are called __________________.
A)photoautotrophs
B)chemoautotrophs
C)detritivores
D)heterotrophs
26

Which of the following statements is(are) true about the cyanobacteria?
A)Cyanobacteria appeared about 3 billion years ago.
B)Cyanobacteria produce methane.
C)The presence of cyanobacteria increased the concentration of free oxygen.
D)Both a and c are correct.
E)Both a and b are correct.
27

Bacteria are responsible for:
A)cycling minerals within the ecosystem
B)introducing oxygen into the atmosphere
C)deadly diseases
D)all of the above
E)none of the above
28

Which of the following are characteristics of bacterial cells?
A)Bacterial cells are prokaryotes.
B)Bacterial cells do not have an organized nucleus.
C)Bacterial cells have a cell wall.
D)Bacterial cells have a ring of double-stranded of DNA.
E)All of the above are true.
29

When exposed to harsh conditions, some bacteria form:
A)capsules
B)endospores
C)pili
D)flagella
E)a cell wall
30

Which one of the following statements is not true about bacteria and eukaryotes?
A)Eukaryotes generally are larger than bacteria.
B)Bacteria lack internal compartmentalization.
C)Both types of organisms reproduce by mitosis.
D)Bacteria are fundamentally single-celled.
E)The flagella of bacteria are less complex than those of eukaryotes.
31

All of the following diseases are caused by bacteria except:
A)plague
B)yellow fever
C)typhus
D)cholera
E)tuberculosis
32

Gram-positive bacteria have an outer membrane that stains purple.
A)True
B)False
33

Because the peptidoglycans wall of gram-positive bacteria is covered by an outer (lipopolysaccharide) membrane, they are more resistant to the action of most antibiotics than gram-negative bacteria.
A)True
B)False
34

Actinomycetes are flexible, helical bacteria which use axial filaments to move.
A)True
B)False








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