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1

True or false. Nearly 94% of all bacteria live in the top layers of the soil.
A)True
B)False
2

What structure of prokaryotes enables them to endure harsh conditions?
A)endospore
B)plasmid
C)glycocalyx
D)pilus
3

What structure allows prokaryotic cells to attach to objects?
A)flagellum
B)ribosome
C)pilus
D)nucleoid
4

______________ are small circles of double-stranded DNA that are exchanged between prokaryotic cells.
A)Endospores
B)Plasmids
C)Glycocalyces
D)Pili
5

The criteria that have traditionally been most important in classifying prokaryotes include:
A)structure
B)mode of energy metabolism
C)disease caused
D)evolutionary relationship
E)Both a and b are correct.
F)Both c and d are correct.
6

True or false. Today, molecular data are leading to a reevaluation of prokaryote classification.
A)True
B)False
7

Rod-shaped bacterial cells are called _____________.
A)cocci
B)bacilli
C)spirilla
8

True or false. Distinguishing between prokaryotes based on cell wall staining responses may not accurately reflect evolutionary relationships.
A)True
B)False
9

In gram-positive bacteria, the cell wall is primarily ________________.
A)a thin wall of cellulose
B)a thin wall of polysaccharide and lipid
C)protein
D)a thick wall of peptidoglycan
10

_____________ require oxygen for generating ATP.
A)Obligate aerobes
B)Obligate anaerobes
C)Chemotrophic prokaryotes
D)Methanogens
11

_____________ can either use oxygen or can survive without it.
A)Obligate aerobes
B)Obligate anaerobes
C)Facultative anaerobes
D)Methanogens
12

_________________ prokaryotes can be expected in an environment characterized by extreme heat.
A)Halophilic
B)All
C)Methanogenic
D)Thermophilic
13

____________ provides vertical gene transfer between prokaryotic cells.
A)Horizontal gene transfer
B)Mitosis
C)Binary fission
D)Meiosis
14

During _____________, a live bacterial cell can take up the DNA released from a dead bacterium.
A)vertical gene transfer
B)transduction
C)conjugation
D)transformation
15

True or false. Horizontal gene transfer is rare among bacteria.
A)True
B)False
16

What is one example of a bacterial illness carried by an arthropod?
A)Legionnaire’s disease
B)Lyme disease
C)Anthrax
D)Cholera
17

True or false. Incidences of food poisoning in the United Stated are rare.
A)True
B)False
18

What is one way that industry uses prokaryotes or their products?
A)bioremediation
B)making cheese
C)producing proteins for medicinal purposes
D)All of these are correct.
19

True or false. It is possible to culture every kind of prokaryote in a petri dish.
A)True
B)False





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