Microbiology Test Bank Exam Questions With Correct Answers
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Course
Microbiology
Institution
Microbiology
Microbiology Test Bank Exam Questions
With Correct Answers
Penicillin controls bacterial growth by:
A) preventing synthesis of the lipopolysaccharide layer
B) inhibiting protein synthesis
C) preventing cross-link formation in peptidoglycan
D) preventing generation of the proton motive force -...
Microbiology Test Bank Exam Questions
With Correct Answers
Penicillin controls bacterial growth by:
A) preventing synthesis of the lipopolysaccharide layer
B) inhibiting protein synthesis
C) preventing cross-link formation in peptidoglycan
D) preventing generation of the proton motive force - answer✔✔preventing cross-link formation
in peptidoglycan
Reproduction via binary fission leads to what type of growth under optimal conditions:
A) linear
B) mixed
C) exponential
D) uptake-limited - answer✔✔exponential
Protection against osmotic lyses is provided by:
A) lysosomes
B) the cellular plasma membrane
C) the cell's capsule
D) the cell wall - answer✔✔the cell wall
Name associated with the presense of a cell wall and a capsule together in a bacterial cell wall:
A) the envelope
B) the capsule
C) the cytoplasmic membrane D) the cell wall - answer✔✔the envelope
, THEBRIGHT EXAM SOLUTIONS 8/20/2024 8:37 PM
Which of the following is true about the lag phase:
A) cells adapt to a new medium B) in some cases it may be very short
C) cells replenish spent materials
D) all of the above - answer✔✔all of the above
A student is asked by the professor to sub-culture a bacterial organism onto fresh media for
future studies. However during sub-culturing the students lock the test tube preventing oxygen
flow into the media. After days the culture dyes. What type of culture did the student have at
hand:
A) obligate aerobe
B) strict anaerobe
C) facultative anaerobe
D) none of the above - answer✔✔obligate aerobe
Staining procedure designed for bacterial families with high lipid content and resistant to
standard staining:
A) gram stain
B) negative staining
C) acid fast staining
D) simple stain - answer✔✔acid fast staining
Which of the following is not considered a starvation response?
A) endospore formation
B) synthesis of starvation proteins
C) cell death at a logrtihmic rate D) a decrease in cellular size and nucleoid condensation -
answer✔✔cell death at a logrtihmic rate
Organelle responsible for the synthesis of protein in a eukaryotic cell:
A) the smooth ER
B) the rough ER
C) the Golgi complex
D) the nucleus - answer✔✔the rough ER
, THEBRIGHT EXAM SOLUTIONS 8/20/2024 8:37 PM
Which of the following is the most important structure related to microbial attachment to cells?
A) flagellum
B) plasmid
C) peptidoglycan
D) glycocalix - answer✔✔glycocalix
Which of the following statement(s) is/are correct when comparing prokaryotic and eukaryotic
genome?
A) bacteria mostly have one circular DNA molecule
B) Eukaryotes have linear DNA C) Both A and B
D) None of the above - answer✔✔Both A and B
___________ membranes allow some molecules to pass but not all.
A) Permeable
B) Inverted Membrane
C) Selectively Membrane
D) Impermeable - answer✔✔Selectively Membrane
The ribosome binding site
A) forms a stem-loop structure in the RNA
B) is located upstream of the promoter sequence
C) is located immediately upstream of the start codon
D) is more likely to be associated with an operon than with a gene encoding a single protein -
answer✔✔is located immediately upstream of the start codon
The nucleus of a eukaryote does not contain
A) nuclear membrane
B) nucleoid
C) nuclear pores
D) nucleolus - answer✔✔nucleoid
The protein coat and lipid envelopes are components that help to protect the viral
A) capsid
, THEBRIGHT EXAM SOLUTIONS 8/20/2024 8:37 PM
B) genome
C) tegument
D) spikes - answer✔✔genome
Which of the following helps protect bacteria from lysis in dilute solution and helps to determine
cellular morphology?
A) plasma membrane
B) capsule
C) gas vacuoles
D) cell wall - answer✔✔cell wall
Chapter 35 Questions Parasite are organisms that
A. Live in a host
B. Depend metabolically on the host
C. Can cause disease
D. All of the above - answer✔✔All of the above
Opportunistic pathogens are different from primary pathogens because
A. Opportunistic pathogens causes disease by direct interaction with the healthy host
B. Opportunistic pathogens are part of a normal flora that can causes disease when it gains
access to other sites or the host is immunocompromised
C. There are no differences between primary and opportunistic pathogens
D. Primary pathogens only cause disease in an immunocompromised host -
answer✔✔Opportunistic pathogens are part of a normal flora that can causes disease when it
gains access to other sites or the host is immunocompromised
Pathogenicity is the ability to
A. Ability of a parasite to cause disease
B. The ability of a parasite to generate a pathway
C. The ability of a parasite to grow rapidly in a short amount of time
D. None of the above - answer✔✔Ability of a parasite to cause disease
Which of these are part of the chain of infection?
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