What does growth refer to in terms of a growth plate ?
A. The growth of individual cells
B. The growth of the plate
C. The growth of a microbial population
D. All of these - ANSWER>>The growth of a microbial population
What are protective enzymes against toxic reactive oxygen species?
A. Peroxide and phosphatase
B. Catalase and oxygenase
C. Peroxidase and Catalase
D. None of the above - ANSWER>>Peroxidase and Catalase
Cells that are persister cells have
A. Long term survival characteristics
B. Increased virulence
C. Decreased virulence
D. A and B - ANSWER>>A and B
What is the purpose of carotenoid pigments
A. To aid in photooxidation
B. To prevent photooxidation
C. To create free radicals
D. To cause radiation damage - ANSWER>>To prevent photooxidation
,Bacterial cells in biofilms communicate in a density dependent manner called
A. Quantitative Sensing
B. Quorum Sensing
C. Quintessential Sensing
D. None of the above - ANSWER>>Quorum Sensing
Reproduction via binary fission leads to what type of growth under optimal conditions:
A) linear
B) mixed
C) exponential
D) uptake-limited - ANSWER>>exponential
Selective media is different from differential media in that:
A. Selective media favors the growth of some microorganisms and inhibits others while
differential media distinguishes between groups of microorganisms based on biological
characteristics
B. Selective media distinguishes between groups of microorganisms based on biological
characteristics while differential media favors the growth of some microorganism and inhibits the
growth of others
C. Selective and differential media do not differ in use.
D. Selective and differential media are not media used for distinguishing purposes. -
ANSWER>>Selective media favors the growth of some microorganisms and inhibits others while
differential media distinguishes between groups of microorganisms based on biological
characteristics
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
In the exponential phase of growth what happens?
A. Rate of growth is slow
B. Rate of growth stops
C. Rate of growth and division is constant
D. Exponential phase is not a phase of growth - ANSWER>>Rate of growth and division is constant
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
Generation time is
A. The time required for the population to double in size
B. The time required for the population to triple in size
C. The time required for one half of the population to die
D. The time required for one fourth of the population to die - ANSWER>>The time required for the
population to double in size
True or false: Whether or not a cell is alive or dead is always clear cut in microbiology. -
ANSWER>>false
, True or false: Turbidimetric measures are a quick, easy, and sensitive way to measure cell mass -
ANSWER>>True
What is the method by which most bacteria divide?
A. Binary fusion
B. Sexual reproduction
C. Binary fission
D. Nuclear fission - ANSWER>>Binary fission
What happens when MreB is mutated?
A. Chromosome will segregate
B. Chromosomes will not segregate
C. MreB does not have an effect on chromosome segregation
D. Chromosomes will breakdown - ANSWER>>Chromosomes will not segregate
What is not a part of septation?
A. Selection of site for septum formation
B. Linkage of Z ring to plasma membrane (cell wall)
C. Disassembly of cell wall synthesizing machinery
D. Constriction of cell and septum formation - ANSWER>>Disassembly of cell wall synthesizing
machinery
What is the purpose of a penicillin binding protein?
A. Link penicillin strands and catalyze controlled degradation for new growth
B. Link amylase to the cell wall
C. Cause programmed cell death
A. The growth of individual cells
B. The growth of the plate
C. The growth of a microbial population
D. All of these - ANSWER>>The growth of a microbial population
What are protective enzymes against toxic reactive oxygen species?
A. Peroxide and phosphatase
B. Catalase and oxygenase
C. Peroxidase and Catalase
D. None of the above - ANSWER>>Peroxidase and Catalase
Cells that are persister cells have
A. Long term survival characteristics
B. Increased virulence
C. Decreased virulence
D. A and B - ANSWER>>A and B
What is the purpose of carotenoid pigments
A. To aid in photooxidation
B. To prevent photooxidation
C. To create free radicals
D. To cause radiation damage - ANSWER>>To prevent photooxidation
,Bacterial cells in biofilms communicate in a density dependent manner called
A. Quantitative Sensing
B. Quorum Sensing
C. Quintessential Sensing
D. None of the above - ANSWER>>Quorum Sensing
Reproduction via binary fission leads to what type of growth under optimal conditions:
A) linear
B) mixed
C) exponential
D) uptake-limited - ANSWER>>exponential
Selective media is different from differential media in that:
A. Selective media favors the growth of some microorganisms and inhibits others while
differential media distinguishes between groups of microorganisms based on biological
characteristics
B. Selective media distinguishes between groups of microorganisms based on biological
characteristics while differential media favors the growth of some microorganism and inhibits the
growth of others
C. Selective and differential media do not differ in use.
D. Selective and differential media are not media used for distinguishing purposes. -
ANSWER>>Selective media favors the growth of some microorganisms and inhibits others while
differential media distinguishes between groups of microorganisms based on biological
characteristics
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
In the exponential phase of growth what happens?
A. Rate of growth is slow
B. Rate of growth stops
C. Rate of growth and division is constant
D. Exponential phase is not a phase of growth - ANSWER>>Rate of growth and division is constant
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
Generation time is
A. The time required for the population to double in size
B. The time required for the population to triple in size
C. The time required for one half of the population to die
D. The time required for one fourth of the population to die - ANSWER>>The time required for the
population to double in size
True or false: Whether or not a cell is alive or dead is always clear cut in microbiology. -
ANSWER>>false
, True or false: Turbidimetric measures are a quick, easy, and sensitive way to measure cell mass -
ANSWER>>True
What is the method by which most bacteria divide?
A. Binary fusion
B. Sexual reproduction
C. Binary fission
D. Nuclear fission - ANSWER>>Binary fission
What happens when MreB is mutated?
A. Chromosome will segregate
B. Chromosomes will not segregate
C. MreB does not have an effect on chromosome segregation
D. Chromosomes will breakdown - ANSWER>>Chromosomes will not segregate
What is not a part of septation?
A. Selection of site for septum formation
B. Linkage of Z ring to plasma membrane (cell wall)
C. Disassembly of cell wall synthesizing machinery
D. Constriction of cell and septum formation - ANSWER>>Disassembly of cell wall synthesizing
machinery
What is the purpose of a penicillin binding protein?
A. Link penicillin strands and catalyze controlled degradation for new growth
B. Link amylase to the cell wall
C. Cause programmed cell death
