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OPENSTAX MICROBIOLOGY CHAPTER 9 MICROBIAL GROWTH
2025/2026 LATEST QUESTIONS & ANSWERS 100% ACCURATE
SOLUTIONS FOR GUARANTEED SUCCESS | EXPERT-VERIFIED,
GRADED A+
generation time
the period between the birth of one generation and the birth of the next
generation
doubling time
The number of years needed to double a population, assuming a constant rate of
natural increase.
growth curve
graph of the number of organisms in growing population over time
Enterobacteriaceae are found in the __________ and _______ ___________ tract
but can sometimes spread to the urinary tract, where they are capable of causing
infections.
gut and upper respiratory tract
Name 2 examples of aerotolerant anaerobes found in the oral microbiota.
lactobacilli and streptococci
Catalyst test
detects the presence of the enzyme catalase by noting whether bubbles are
released when Hydrogen peroxide is added to a culture example.
binary fission
, 2
A form of asexual reproduction in single-celled organisms by which one cell
divides into two cells of the same size
septum
wall
culture density
the number of cells per unit volume
inoculum
introduction of microbes into medium
culture medium
nutrients prepared for microbial growth
lag phase
"flat" period of adjustment, enlargement; little growth
logarithmic growth phase
In which growth phase is an organism most sensitive to an antimicrobial agent?
intrinsic growth rate
the maximum potential for growth of a population under ideal conditions with
unlimited resources
stationary phase
period of equilibrium; microbial deaths balance production of new cells
death phase
population is decreasing at a logarithmic rate
persisters
slowing or stopping of metabolism so that the microbe can't be harmed by the
antibiotic
OPENSTAX MICROBIOLOGY CHAPTER 9 MICROBIAL GROWTH
2025/2026 LATEST QUESTIONS & ANSWERS 100% ACCURATE
SOLUTIONS FOR GUARANTEED SUCCESS | EXPERT-VERIFIED,
GRADED A+
generation time
the period between the birth of one generation and the birth of the next
generation
doubling time
The number of years needed to double a population, assuming a constant rate of
natural increase.
growth curve
graph of the number of organisms in growing population over time
Enterobacteriaceae are found in the __________ and _______ ___________ tract
but can sometimes spread to the urinary tract, where they are capable of causing
infections.
gut and upper respiratory tract
Name 2 examples of aerotolerant anaerobes found in the oral microbiota.
lactobacilli and streptococci
Catalyst test
detects the presence of the enzyme catalase by noting whether bubbles are
released when Hydrogen peroxide is added to a culture example.
binary fission
, 2
A form of asexual reproduction in single-celled organisms by which one cell
divides into two cells of the same size
septum
wall
culture density
the number of cells per unit volume
inoculum
introduction of microbes into medium
culture medium
nutrients prepared for microbial growth
lag phase
"flat" period of adjustment, enlargement; little growth
logarithmic growth phase
In which growth phase is an organism most sensitive to an antimicrobial agent?
intrinsic growth rate
the maximum potential for growth of a population under ideal conditions with
unlimited resources
stationary phase
period of equilibrium; microbial deaths balance production of new cells
death phase
population is decreasing at a logarithmic rate
persisters
slowing or stopping of metabolism so that the microbe can't be harmed by the
antibiotic
