Which of the following are found primarily in the intestines of humans?
A) gram-negative aerobic rods and cocci
B) aerobic, helical bacteria
C) facultatively anaerobic gram-negative rods
D) gram-positive cocci
E) endospore-forming rods - correct answer facultatively anaerobic gram-negative rods
What is group "c." in the key shown in Figure 11.1?
A) bacteroidetes
B) chlamydiae
C) fusobacteria
D) planctomycetes
E) spirochaetes - correct answer spirochaetes
Which of the following is NOT a characteristic inherent of the non-endospore-forming gram-positive
rods?
A) are aerotolerant
B) carry out fermentative metabolism
C) display a branched filamentous morphology
D) nonpathogenic
E) lack cell walls - correct answer nonpathogenic
Which of the following is NOT a characteristic of Neisseria?
A) requires X and V factors
B) cocci
C) gram-negative
D) oxidase-positive
E) Some species are human pathogens. - correct answer requires X and V factors
, Microbiology Chapter 11 Test Bank
Staphylococcus and Streptococcus can be easily differentiated in a laboratory by which one of the
following?
A) cell shape
B) Gram stain reaction
C) growth in high salt concentrations
D) ability to cause disease
E) glucose fermentation - correct answer growth in high salt concentrations
Which of the following genera is an anaerobic gram-negative rod?
A) Escherichia
B) Staphylococcus
C) Bacteroides
D) Treponema
E) Neisseria - correct answer bacteroides
Which of the following do you expect to be MOST resistant to high temperatures?
A) Bacillus subtilis
B) Eschericia coli
C) Neisseria gonorrhoeae
D) Staphylococcus aureus
E) Streptococcocus pyogenes - correct answer bacillus subtilis
Which of the following is NOT an enteric?
A) Salmonella
B) Shigella
C) Escherichia
D) Enterobacter
E) Campylobacter - correct answer campylobacter