The University of Texas at Arlington BIOL 2460
9 - Microbial Growth (OpenStax -
Microbiology)
5.0 (15 reviews)
Students also studied
Flashcard sets Study guides
Microbiology Chapter 13 MicroBio Ch. 13 Review Questions 10 - Biochemistry of the Genome (O... Microb
44 terms 38 terms 31 terms 39 terms
aday1a Preview rebecca_smude Preview brian_turner315 Preview spic
Terms in this set (41) Hide definitions
1. Which of the following methods would be used to B. total plate count
measure the concentration of bacterial contamination in
processed peanut butter?
A. turbidity measurement
B. total plate count
C. dry weight measurement
D. direct counting of bacteria on a calibrated slide under
the microscope
2. In which phase would you expect to observe the most A. death phase
endospores in a Bacillus cell culture?
A. death phase
B. lag phase
C. log phase
D. log, lag, and death phases would all have roughly the
same number of endospores.
3. During which phase would penicillin, an antibiotic that C. log phase
inhibits cell-wall synthesis, be most effective?
A. death phase
B. lag phase
C. log phase
D. stationary phase
, 4. Which of the following is the best definition of B. the length of time it takes for a population of cells to double
generation time in a bacterium?
A. the length of time it takes to reach the log phase
B. the length of time it takes for a population of cells to
double
C. the time it takes to reach stationary phase
D. the length of time of the exponential phase
5. What is the function of the Z ring in binary fission? B. It forms a contractile ring at the septum.
A. It controls the replication of DNA.
B. It forms a contractile ring at the septum.
C. It separates the newly synthesized DNA molecules.
D. It mediates the addition of new peptidoglycan
subunits.
6. If a culture starts with 50 cells, how many cells will be C. 1600
present after five generations with no cell death?
A. 200
B. 400
C. 1600
D. 3200
7. Filamentous cyanobacteria often divide by which of the C. fragmentation
following?
A. budding
B. mitosis
C. fragmentation
D. formation of endospores
8. Which is a reason for antimicrobial resistance being C. Cells are metabolically inactive at the base of a biofilm.
higher in a biofilm than in free-floating bacterial cells?
A. The EPS allows faster diffusion of chemicals in the
biofilm.
B. Cells are more metabolically active at the base of a
biofilm.
C. Cells are metabolically inactive at the base of a
biofilm.
D. The structure of a biofilm favors the survival of
antibiotic resistant cells.
9 - Microbial Growth (OpenStax -
Microbiology)
5.0 (15 reviews)
Students also studied
Flashcard sets Study guides
Microbiology Chapter 13 MicroBio Ch. 13 Review Questions 10 - Biochemistry of the Genome (O... Microb
44 terms 38 terms 31 terms 39 terms
aday1a Preview rebecca_smude Preview brian_turner315 Preview spic
Terms in this set (41) Hide definitions
1. Which of the following methods would be used to B. total plate count
measure the concentration of bacterial contamination in
processed peanut butter?
A. turbidity measurement
B. total plate count
C. dry weight measurement
D. direct counting of bacteria on a calibrated slide under
the microscope
2. In which phase would you expect to observe the most A. death phase
endospores in a Bacillus cell culture?
A. death phase
B. lag phase
C. log phase
D. log, lag, and death phases would all have roughly the
same number of endospores.
3. During which phase would penicillin, an antibiotic that C. log phase
inhibits cell-wall synthesis, be most effective?
A. death phase
B. lag phase
C. log phase
D. stationary phase
, 4. Which of the following is the best definition of B. the length of time it takes for a population of cells to double
generation time in a bacterium?
A. the length of time it takes to reach the log phase
B. the length of time it takes for a population of cells to
double
C. the time it takes to reach stationary phase
D. the length of time of the exponential phase
5. What is the function of the Z ring in binary fission? B. It forms a contractile ring at the septum.
A. It controls the replication of DNA.
B. It forms a contractile ring at the septum.
C. It separates the newly synthesized DNA molecules.
D. It mediates the addition of new peptidoglycan
subunits.
6. If a culture starts with 50 cells, how many cells will be C. 1600
present after five generations with no cell death?
A. 200
B. 400
C. 1600
D. 3200
7. Filamentous cyanobacteria often divide by which of the C. fragmentation
following?
A. budding
B. mitosis
C. fragmentation
D. formation of endospores
8. Which is a reason for antimicrobial resistance being C. Cells are metabolically inactive at the base of a biofilm.
higher in a biofilm than in free-floating bacterial cells?
A. The EPS allows faster diffusion of chemicals in the
biofilm.
B. Cells are more metabolically active at the base of a
biofilm.
C. Cells are metabolically inactive at the base of a
biofilm.
D. The structure of a biofilm favors the survival of
antibiotic resistant cells.
