4/27/25, 11:32
AM
MICRO 3050 EXAM 2 QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED
5.0 (1 review)
Save
Terms in this set (359)
Which of the following d) viable cell count using plating methods
methods used to assess (spread plate, pour plate, or membrane filter)
cell numbers of
bacteria in a
sample would be most
likely to
underestimate the
actual number of
bacteria present?
a) electronic counter
b) turbidity using a
spectrophotometer
c) direct cell count using
a Petroff-Hauser
counting chamber and
a microscope (not
including a dye kit)
d) viable cell count using
plating methods
(spread plate, pour
plate, or membrane
filter)
In the___phase of growth, stationary
the
majority of cells may start
https://quizlet.com/377295100/micro-3050-exam-2- 1/31
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,4/27/25, 11:32
AM
sporulating
In the___phase of growth, exponential
the cells
are doubling in number
every 30 minutes
In the___phase of growth, stationary
cells have
stopped dividing due
to the lack of available
nutrients
In the___phase of growth, death
the
number of viable cells
exponentially decreases
https://quizlet.com/377295100/micro-3050-exam-2- 2/31
flash-cards/
,4/27/25, 11:32
AM
Which of the following b) ATP is the only compound that will release
statements is not true greater than 30 kJ/mol when a bond is
of ATP? hydrolyzed
a) ATP will release
46 kJ/mol when
hydrolyzed to
AMP + 2Pi
b) ATP is the only
compound that will
release greater than
30 kJ/mol when a
bond is hydrolyzed
c) ATP is used to
drive endergonic
reactions needed
for anabolism
d) ATP is formed
during fermentation,
aerobic respiration,
and anaerobic
respiration
Which one of the c) extended periods of exponential growth are
following statements common in most microenvironments in
does not accurately nature
describe microbial
growth in natural
environments?
a) microenvironmen
t are typically
oligotrophic
b) most
microenvironments in
nature are biofilms
c) extended periods
of exponential
growth are
https://quizlet.com/377295100/micro-3050-exam-2- 3/31
flash-cards/
, 4/27/25, 11:32
AM
common in most
microenvironments in
nature
d) microenvironments have
a high
microbial diversity (not
pure cultures)
The formation of b) microbes must oxidize NADH + H+ to
fermentation products NAD+, so that it can be used for glycolysis
during microbial
fermentation is
necessary because
a) microbes must
make acids to use for
energy production
b) microbes must
oxidize NADH + H+ to
NAD+, so that it can
be used for
glycolysis
c) the fermentation
products must be fed
into the TCA (Kreb's)
cycle in order to
make ATP
d) microbes must reduce
NAD+ to NADH
+ H+, so that it can
deliver electrons to the
electron transport
chain
Which of the following d) a biofilm is typically composed of one bacterial
statements is not true species
of biofilms?
a) the formation and
development of a
biofilm is dependent
on the release of
extracellular
https://quizlet.com/377295100/micro-3050-exam-2- 4/31
flash-cards/
AM
MICRO 3050 EXAM 2 QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED
5.0 (1 review)
Save
Terms in this set (359)
Which of the following d) viable cell count using plating methods
methods used to assess (spread plate, pour plate, or membrane filter)
cell numbers of
bacteria in a
sample would be most
likely to
underestimate the
actual number of
bacteria present?
a) electronic counter
b) turbidity using a
spectrophotometer
c) direct cell count using
a Petroff-Hauser
counting chamber and
a microscope (not
including a dye kit)
d) viable cell count using
plating methods
(spread plate, pour
plate, or membrane
filter)
In the___phase of growth, stationary
the
majority of cells may start
https://quizlet.com/377295100/micro-3050-exam-2- 1/31
flash-cards/
,4/27/25, 11:32
AM
sporulating
In the___phase of growth, exponential
the cells
are doubling in number
every 30 minutes
In the___phase of growth, stationary
cells have
stopped dividing due
to the lack of available
nutrients
In the___phase of growth, death
the
number of viable cells
exponentially decreases
https://quizlet.com/377295100/micro-3050-exam-2- 2/31
flash-cards/
,4/27/25, 11:32
AM
Which of the following b) ATP is the only compound that will release
statements is not true greater than 30 kJ/mol when a bond is
of ATP? hydrolyzed
a) ATP will release
46 kJ/mol when
hydrolyzed to
AMP + 2Pi
b) ATP is the only
compound that will
release greater than
30 kJ/mol when a
bond is hydrolyzed
c) ATP is used to
drive endergonic
reactions needed
for anabolism
d) ATP is formed
during fermentation,
aerobic respiration,
and anaerobic
respiration
Which one of the c) extended periods of exponential growth are
following statements common in most microenvironments in
does not accurately nature
describe microbial
growth in natural
environments?
a) microenvironmen
t are typically
oligotrophic
b) most
microenvironments in
nature are biofilms
c) extended periods
of exponential
growth are
https://quizlet.com/377295100/micro-3050-exam-2- 3/31
flash-cards/
, 4/27/25, 11:32
AM
common in most
microenvironments in
nature
d) microenvironments have
a high
microbial diversity (not
pure cultures)
The formation of b) microbes must oxidize NADH + H+ to
fermentation products NAD+, so that it can be used for glycolysis
during microbial
fermentation is
necessary because
a) microbes must
make acids to use for
energy production
b) microbes must
oxidize NADH + H+ to
NAD+, so that it can
be used for
glycolysis
c) the fermentation
products must be fed
into the TCA (Kreb's)
cycle in order to
make ATP
d) microbes must reduce
NAD+ to NADH
+ H+, so that it can
deliver electrons to the
electron transport
chain
Which of the following d) a biofilm is typically composed of one bacterial
statements is not true species
of biofilms?
a) the formation and
development of a
biofilm is dependent
on the release of
extracellular
https://quizlet.com/377295100/micro-3050-exam-2- 4/31
flash-cards/
