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Microbiology, Fifth Edition
Microbiology, 5/e
Lansing M Prescott, Augustana College
Donald A Klein, Colorado State University
John P Harley, Eastern Kentucky University
Bacteria: The Low G + C Gram Positives

Multiple Choice Quiz

Choose the best answer



1

The low G + C gram-positive group contains
A)clostridia, bacilli and lactobacilli
B)clostridia and relatives only
C)bacilli and lactobacilli only
2

Staphylococcus grows on/in the ______________ of warm-blooded animals.
A)skin and mucus membranes
B)teeth
C)large intestines
3

Thermoactinomyces vulgaris is a causative agent for
A)cystic fibrosis
B)farmer's lung disease
C)primary atypical pneumonia
D)vaginitis
4

Which of the following is a normal skin resident?
A)Staphylococcus epidermidis
B)Staphylococcus aureus
C)Thermoactinomyces vulgaris
5

Which of the following is responsible for food spoilage even in canned foods?
A)Clostridium perfringens
B)Clostridium botulinum
C)Clostridium tetani
6

Which of the following is associated with dental caries?
A)Streptococcus pneumoniae
B)Streptococcus mutans
C)Lactococcus lactis
D)Staphylococcus aureus
7

Which of the following is used in the production of buttermilk and cheese?
A)Streptococcus mutans
B)Streptococcus faecelis
C)Lactococcus lactis
8

Which of the following is true of the genus Lactobacillus?
A)They are used in the production of fermented vegetable foods, beverages, sourdough, hard cheeses, yogurt, and sausages.
B)They are responsible for spoilage of beer, milk, and meat.
C)Many species are pathogenic in humans.
D)All of these are true about the genus Lactobacillus.
E)Only a and b are true
9

Members of the genus Lactobacillus are normal microflora of the
A)mouth
B)skin
C)hair
D)all of the above
10

Which of the following genera produce useful antibiotics?
A)Clostridium
B)Leuconostoc
C)Bacillus
D)All of these
11

Spore-forming bacteria are found mainly in
A)freshwater environments
B)marine environments
C)soil environments








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