Microbiology - chapter 11

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Microbiology
Chapter 11
Exam questions
updated 6 years ago by marciacaroline
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1

What is found primarily in the intestines of humans?

facultatively anaerobic gram negative rods

2

Which are some enteric gram negative bacteria?

a) Enterobacter

b) Erwinia

c) Klebsiella

d) Salmonella

e) Shigella

f) Escherichia

g) Proteus

h) Serratia

I) Yersinia

3

Characteristics of Pirochetes

a) possess an axial filament

b) gram negative

c) helical shape

d) found in the human oral cavity

4

Which bacteria is wall less or lack a cell wall

Mycoplasma

5

Which bacteria form conidiospores

Actinomycetes - anaerobic bacteria

Streptomayces - aerobic bacteria

6

Requeirements for X and V factors are used to identify

Haemophilus

7

What are the causative agent of Rocky Mountain spotted fever

a) it is an intracellular parasite

b) it is transmitted by ticks

c) it is in the genus Rickettsia

e) it is gram-negative

8

A primary difference between cyanobacteria and purple and green phototrophic bacteria is

electron donor for CO2 reduction

9

Which bacteria are responsible for more infections and more different kinds of infections

Streptococcus

10

The nonsulfur (photoheterothoph) use organic compound as

electron donors to reduce CO2

11

Streptomyces differs from Actinomyces because Streptomyces

is a strict aerobe

12

Salmonella, Shigella, Yersinia and Serratia are all

gram negative facultatively anaerobic rods

13

Thiobacillus oxidizes inorganic sulfur compounds and reduces CO2. This bacterium is

chemoautotroph

14

An aerobic gram positive, endospore-forming bacterium that grows well on nutrient agar is

Bacillales

15

Caulobacter are different from most bacteria because

They have stalks

16

Which bacterium is motile and does not have flagella

Spirochetes

17

Mycoplasmas differ from other bacteria because

They as well less or lack a cell wall

18

Two distinguishing factor of the epsilon proteobacteria that they are motile and microaerophilic

True

19

Gram stain is not suitable for identifying members of the Archaea

False