Microbiology 020 - General Microbiology » Spring 2022 » Review Quiz 4

Need help with your exam preparation?

Existing Quiz Clients Login here
Question #1
Which element is required in very small (trace) amounts and could be deadly when consumed in large amounts?
A.   nitrogen
B.   hydrogen
C.   iron
D.   carbon
E.   oxygen
Question #2
In what phase of bacterial growth are cells are growing the fastest?
A.   stationary
B.   log
C.   decline
D.   lag
Question #3
A bacterial cell with a generation time of 1 hour was inoculated into a culture medium. How many cells are there after 3 hours? Assume no death occurred and they are growing to their potential.
A.   8
B.   4
C.   32
D.   16
E.   2
Question #4
Which type of bacteria grows best in our body?
A.   mesophiles
B.   thermophiles
C.   psychrophiles
D.   halophiles
Question #5
Bacteria thriving at the bottom of stagnant water where there is extremely low concentration of oxygen gas tend to be __________________.
A.   facultative anerobes
B.   obligate anaerobes
C.   obligate aerobes
D.   dead
Question #6
_________________media have ingredients that are not precisely defined.
A.   Enrichment
B.   Complex
C.   Selective
D.   Differential
Question #7
Biofilms have the potential to destroy materials on surfaces where they form.
A.   True
B.   False
Question #8
A microbe that benefits from an association with a host but the host is unaffected by the presence of the microbe is the host's ________________.
A.   parasite
B.   competitor
C.   commensal
D.   predator
Question #9
Which solid culture medium has the smallest surface? Nutrient agar ___________.
A.   plate
B.   slant
C.   deep
Question #10
Bacterial cells divide by mitosis and cytokinesis.
A.   True
B.   False

Need help with your exam preparation?

Existing Quiz Clients Login here