MIC 102 - PRE-LECTURE QUIZZES QUESTIONS
What is not a function of a prokaryotic cell membrane?
(A) Protein synthesis
(B) Protein secretion
(C) Respiratory electron transport
(D) Osmotic barrier
(E) Lipid synthesis - Answers -(A) Protein synthesis
Which of the following cell components would not be found on a gram-positive, circular
shaped bacterium?
(A) Murein
(B) Teichoic Acids
(C) S layer
(D) Flagellum
(E) Outer Membrane - Answers -(E) Outer Membrane
Which structure provides resistance to desiccation?
(A) Pili
(B) S layer
(C) Murein
(D) Glycocalyx
(E) Lipopolysaccharide - Answers -(D) Glycocalyx
What part of the flagellum can bind ATP to fuel movement?
(A) Filament
(B) Hook
(C) Basal Body
(D) Fimbriae
(E) Pilus - Answers -(C) Basal Body
Choose the true statement. Bacterial genomes...?
(A) Are organized into a nucleus
(B) Are simple and relatively even in size
(C) Share all of the same genes
(D) Are compacted using supercoiling and other factors - Answers -(D) Are compacted
using supercoiling and other factors
Topoisomerase can...?
,(A) Function only with ATP hydrolysis
(B) Induce (create) positive supercoils
(C) Induce (create) negative supercoils
(D) Progressively unwind DNA for replication
(E) Store energy in RNAs by supercoiling - Answers -(B) Induce (create) positive
supercoils
Which is not a specialized structure bacteria may have?
(A) Magnetosomes
(B) Flagella
(C) Gas Vesicle
(D) Nucleolus
(E) Storage Granule - Answers -(D) Nucleolus
What is true about thylakoids?
(A) They are long, thin membrane vesicles
(B) They are protein-encased granules used for buoyancy
(C) They organize proteins for photosynthesis
(D) They store harmful minerals in a granule - Answers -(C) They organize proteins for
photosynthesis
To measure the number of viable cells in a culture, the best method to use is...?
(A) Optical Density
(B) Colony Counting
(C) Flow Cytometry
(D) Hemacytometer Count
(E) None of these - Answers -(B) Colony Counting
In which phase of growth have cells not yet achieved the maximal growth rate?
(A) Lag phase
(B) Exponential phase
(C) Stationary phase
(D) Germination
(E) Sporulation - Answers -(A) Lag phase
What kind of bacteria can live comfortably as a symbiont with the ghostfish of the
Mariana Trench, 5 miles below sea level?
(A) Psychrophile
(B) Thermophile
(C) Halophile
, (D) Mesophile
(E) Piezophile - Answers -(E) Piezophile
MinE promotes even bacterial cell division by...?
(A) Localizing to the septum
(B) Forming a ring at the midline
(C) Blocking MinD and MinC polymerization at the cell poles
(D) Blocking MinD and MinC polymerization in the cell middle region
(E) Promoting FtsZ polymerization at the cell poles - Answers -(D) Blocking MinD and
MinC polymerization in the cell middle region
Biological membranes (phospholipid bilayers)...?
(A) Are impermeable to protons (H+)
(B) Are freely permeable to protons (H+)
(C) Transduce energy into different forms
(D) Both A and B
(E) Both A and C - Answers -(E) Both A and C
A prokaryote that cannot utilize light as an energy source nor use inorganic carbon
sources like CO2 is a...?
(A) Photoheterotroph
(B) Chemoheterotroph
(C) Photoautotroph
(D) Chemoautotroph - Answers -(B) Chemoheterotroph
What class of macromolecule consumes the most energy for biosynthesis?
(A) RNA
(B) DNA
(C) Protein
(D) Phospholipid
(E) Peptidoglycan - Answers -(C) Protein
Precursor metabolites...?
(A) Result from fueling reactions (catabolism)
(B) Are necessary for biosynthesis (anabolism)
(C) Comprise small ionic species such as Mg2+ and Cl-
(D) A and B
(E) A and C - Answers -(D) A and B
Heterotrophic bacteria...?
What is not a function of a prokaryotic cell membrane?
(A) Protein synthesis
(B) Protein secretion
(C) Respiratory electron transport
(D) Osmotic barrier
(E) Lipid synthesis - Answers -(A) Protein synthesis
Which of the following cell components would not be found on a gram-positive, circular
shaped bacterium?
(A) Murein
(B) Teichoic Acids
(C) S layer
(D) Flagellum
(E) Outer Membrane - Answers -(E) Outer Membrane
Which structure provides resistance to desiccation?
(A) Pili
(B) S layer
(C) Murein
(D) Glycocalyx
(E) Lipopolysaccharide - Answers -(D) Glycocalyx
What part of the flagellum can bind ATP to fuel movement?
(A) Filament
(B) Hook
(C) Basal Body
(D) Fimbriae
(E) Pilus - Answers -(C) Basal Body
Choose the true statement. Bacterial genomes...?
(A) Are organized into a nucleus
(B) Are simple and relatively even in size
(C) Share all of the same genes
(D) Are compacted using supercoiling and other factors - Answers -(D) Are compacted
using supercoiling and other factors
Topoisomerase can...?
,(A) Function only with ATP hydrolysis
(B) Induce (create) positive supercoils
(C) Induce (create) negative supercoils
(D) Progressively unwind DNA for replication
(E) Store energy in RNAs by supercoiling - Answers -(B) Induce (create) positive
supercoils
Which is not a specialized structure bacteria may have?
(A) Magnetosomes
(B) Flagella
(C) Gas Vesicle
(D) Nucleolus
(E) Storage Granule - Answers -(D) Nucleolus
What is true about thylakoids?
(A) They are long, thin membrane vesicles
(B) They are protein-encased granules used for buoyancy
(C) They organize proteins for photosynthesis
(D) They store harmful minerals in a granule - Answers -(C) They organize proteins for
photosynthesis
To measure the number of viable cells in a culture, the best method to use is...?
(A) Optical Density
(B) Colony Counting
(C) Flow Cytometry
(D) Hemacytometer Count
(E) None of these - Answers -(B) Colony Counting
In which phase of growth have cells not yet achieved the maximal growth rate?
(A) Lag phase
(B) Exponential phase
(C) Stationary phase
(D) Germination
(E) Sporulation - Answers -(A) Lag phase
What kind of bacteria can live comfortably as a symbiont with the ghostfish of the
Mariana Trench, 5 miles below sea level?
(A) Psychrophile
(B) Thermophile
(C) Halophile
, (D) Mesophile
(E) Piezophile - Answers -(E) Piezophile
MinE promotes even bacterial cell division by...?
(A) Localizing to the septum
(B) Forming a ring at the midline
(C) Blocking MinD and MinC polymerization at the cell poles
(D) Blocking MinD and MinC polymerization in the cell middle region
(E) Promoting FtsZ polymerization at the cell poles - Answers -(D) Blocking MinD and
MinC polymerization in the cell middle region
Biological membranes (phospholipid bilayers)...?
(A) Are impermeable to protons (H+)
(B) Are freely permeable to protons (H+)
(C) Transduce energy into different forms
(D) Both A and B
(E) Both A and C - Answers -(E) Both A and C
A prokaryote that cannot utilize light as an energy source nor use inorganic carbon
sources like CO2 is a...?
(A) Photoheterotroph
(B) Chemoheterotroph
(C) Photoautotroph
(D) Chemoautotroph - Answers -(B) Chemoheterotroph
What class of macromolecule consumes the most energy for biosynthesis?
(A) RNA
(B) DNA
(C) Protein
(D) Phospholipid
(E) Peptidoglycan - Answers -(C) Protein
Precursor metabolites...?
(A) Result from fueling reactions (catabolism)
(B) Are necessary for biosynthesis (anabolism)
(C) Comprise small ionic species such as Mg2+ and Cl-
(D) A and B
(E) A and C - Answers -(D) A and B
Heterotrophic bacteria...?
