MICROBIOLOGY EXAM 1 PRACTICE TEST
UPDATED ACTUAL QUESTIONS WITH CORRECT
ANSWERS
Question 1.
Like all forms of life form three major
ANSWER
on Earth, all microbial cells per- Metabolism, growth, and types of activities: evolution
Question 2.
Distinguish which tivities are true for
ANSWER
list of structural properties and ac- Cytoplasmic membrane, ALL cells ribosomes, metabolism,
and evolution
Question 3.
Pasteur's experiments neous generation of the field of microbiology development of all
ANSWER
refuting the theory of sponta- -Led to development of were crucial to the advancement the
germ theory of disbecause they led to the ease, sterile technique, EXCEPT which of the
following? food preservation -NOT OPTICAL ISOMERS
Question 4.
Koch's first postulate:
ANSWER
The suspected pathogen must be present in all cases of the disease and absent from healthy
animals
Question 5.
Koch's second postulate
ANSWER
The suspected pathogen must be grown in pure culture.
,Question 6.
Koch's third postulate:
ANSWER
Cells from a pure cul- ture of the suspected pathogen must cause disease in a healthy animal.
Question 7.
Koch's 4th postulate:
ANSWER
The suspected pathogen must be reisolated and show to be the same as the original.
Question 8.
Which of the following disease?
ANSWER
best states the germ theory of Some microorganisms can cause disease.
Question 9.
Which is a valid cell
ANSWER
morphology? Spirochete
Question 10.
Identify which of the cytoplasmic membrane
ANSWER
the following is a major function of Energy conservation
Question 11.
Staining increases pared with the background. results in some types other types appearing stain.
ANSWER
the visible contrast of cells com- a differential Because the Gram stain of bacteria staining
purple and pink, this is called __________
,Question 12.
Explain why the presence would benefit a bacterial
ANSWER
of a capsule or slime layer These outer layers can aid cell. in attachment to solid surfaces.
Question 13.
Which list contains terial flagellum?
ANSWER
the correct components of a bac- Filament, hook, basal body
Question 14.
Traditional classification has been _____________
ANSWER
of fungi by sexual spore type Upheld by phylogenetic analysis
Question 15.
What is one feature from plants?
ANSWER
of fungi that distinguishes them Some fungi can be dikaryotic at a specific stage of their life
cycle.
Question 16.
Organic micronutrients ____________.
ANSWER
are commonly called Growth factors
Question 17.
In a bacterial cell anced growth, ____________.
ANSWER
undergoing binary fisison and bal- the proportion of all cell constituents will remain the same
over time
, Question 18.
In a batch culture, four different phases the cells rapidly synthesizing bers are not changing?
ANSWER
bacterial cultures typically exhibit Lag phase of growth. In which phase are proteins, but cell
num-
Question 19.
A student has a pure flask and wants to the culture at a given employ to get an
ANSWER
culture of bacteria growing in a Plate counts know how many living cells are in time. Which
method should she estimate?
Question 20.
The number of organisms determined using (SPC) and spectrophotometry results below would
method?
ANSWER
in a broth culture was SPC= 12 x 10^6 cfu/ml; the standard plate count method SPEC= 11 z
10^7 cfu/ml (SPEC). Which of the you expect to see from each
Question 21.
In mesophiles, growth the temperature growth temperature the temperature _______________.
ANSWER
rates increase gradually as Growth rates decline is increase, until the optimum rapidly as the
temperature for the organism is reached. If increases is increased beyond the optimum,
Question 22.
Highly alkaline environments, haloalkaliphiles are which of the following
ANSWER
like those in which These environments confound, are best described by tain relatively low
concenstatements? trations of hydrogen ions.
Question 23.
Who was the first imental data that plain infectious diseases?
ANSWER
researcher to provide direct exper- Koch supported the germ theory to ex-
UPDATED ACTUAL QUESTIONS WITH CORRECT
ANSWERS
Question 1.
Like all forms of life form three major
ANSWER
on Earth, all microbial cells per- Metabolism, growth, and types of activities: evolution
Question 2.
Distinguish which tivities are true for
ANSWER
list of structural properties and ac- Cytoplasmic membrane, ALL cells ribosomes, metabolism,
and evolution
Question 3.
Pasteur's experiments neous generation of the field of microbiology development of all
ANSWER
refuting the theory of sponta- -Led to development of were crucial to the advancement the
germ theory of disbecause they led to the ease, sterile technique, EXCEPT which of the
following? food preservation -NOT OPTICAL ISOMERS
Question 4.
Koch's first postulate:
ANSWER
The suspected pathogen must be present in all cases of the disease and absent from healthy
animals
Question 5.
Koch's second postulate
ANSWER
The suspected pathogen must be grown in pure culture.
,Question 6.
Koch's third postulate:
ANSWER
Cells from a pure cul- ture of the suspected pathogen must cause disease in a healthy animal.
Question 7.
Koch's 4th postulate:
ANSWER
The suspected pathogen must be reisolated and show to be the same as the original.
Question 8.
Which of the following disease?
ANSWER
best states the germ theory of Some microorganisms can cause disease.
Question 9.
Which is a valid cell
ANSWER
morphology? Spirochete
Question 10.
Identify which of the cytoplasmic membrane
ANSWER
the following is a major function of Energy conservation
Question 11.
Staining increases pared with the background. results in some types other types appearing stain.
ANSWER
the visible contrast of cells com- a differential Because the Gram stain of bacteria staining
purple and pink, this is called __________
,Question 12.
Explain why the presence would benefit a bacterial
ANSWER
of a capsule or slime layer These outer layers can aid cell. in attachment to solid surfaces.
Question 13.
Which list contains terial flagellum?
ANSWER
the correct components of a bac- Filament, hook, basal body
Question 14.
Traditional classification has been _____________
ANSWER
of fungi by sexual spore type Upheld by phylogenetic analysis
Question 15.
What is one feature from plants?
ANSWER
of fungi that distinguishes them Some fungi can be dikaryotic at a specific stage of their life
cycle.
Question 16.
Organic micronutrients ____________.
ANSWER
are commonly called Growth factors
Question 17.
In a bacterial cell anced growth, ____________.
ANSWER
undergoing binary fisison and bal- the proportion of all cell constituents will remain the same
over time
, Question 18.
In a batch culture, four different phases the cells rapidly synthesizing bers are not changing?
ANSWER
bacterial cultures typically exhibit Lag phase of growth. In which phase are proteins, but cell
num-
Question 19.
A student has a pure flask and wants to the culture at a given employ to get an
ANSWER
culture of bacteria growing in a Plate counts know how many living cells are in time. Which
method should she estimate?
Question 20.
The number of organisms determined using (SPC) and spectrophotometry results below would
method?
ANSWER
in a broth culture was SPC= 12 x 10^6 cfu/ml; the standard plate count method SPEC= 11 z
10^7 cfu/ml (SPEC). Which of the you expect to see from each
Question 21.
In mesophiles, growth the temperature growth temperature the temperature _______________.
ANSWER
rates increase gradually as Growth rates decline is increase, until the optimum rapidly as the
temperature for the organism is reached. If increases is increased beyond the optimum,
Question 22.
Highly alkaline environments, haloalkaliphiles are which of the following
ANSWER
like those in which These environments confound, are best described by tain relatively low
concenstatements? trations of hydrogen ions.
Question 23.
Who was the first imental data that plain infectious diseases?
ANSWER
researcher to provide direct exper- Koch supported the germ theory to ex-
