Microbiology Test Questions and Answers
A - ansa capsule or slime that forms a layer on the outside of bacterial cells, allowing them to stick to surfaces,
is called a
A. glycocalyx
B. endospore
C. peptidoglycan
D. pellicle
A - ansa prokaryote that lacks peptidoglycan in its cell walls and typically lives in extreme environments is
called a
A. Archaean
B. protozoan
C. Bacterium
D. ALga
E. Fungus
A - ansa single celled organism with a nucleus and chloroplasts is a
A. Alga
B. Helminth
C. Virus
D. fungus
E. Bacterium
A - ansAerobic respiration differs from anaerobic respiration in which of the following respects?
A. The final electron acceptors are different
B. Aerobic respiration creates fewer molecules of ATP
C. ANaerobic respiration includes glycolysis
,D. Aerobic respiration requires the electron transport chain
A - ansAgrobacterium tumefaciens and Ti plasmids (which normally cause corwn gall disease) are used to
introduce foreign genes into
A. plants
B. E.coli
C. Yeast
D. Mammalian cells
A - ansBacterial endospores are killed by exposure to
A. autoclaving at 15 psi (121C) for 15 min
B. boiling at 100c for 30 min
C. high temp short time pasteurization
D. all of the above
E. none of the above
A - anscollections of clones containing random DNA fragments from a whole genome are called
A. genomic libraries
B. cDNA libraries
C. DNA fingerprints
D. proteomes
A - anshow do surface-active agents or surfactants work
A. remove microbes
B. kill microbes
C. inhibit microbes
, A - ansMitochondria are the sites of _________ in eukaryotic cells
A. Cellular respiration
B. enzyme packaging
C. photosynthesis
D. protein synthesis
A - ansMost bacteria grow best at a pH of approximately
A. 7
B. 1
C. 5
D. 9
E. 14
A - ansthe endosymbiotic theory hypothesizes that
A. eukaryotic cells evolved from prokaryotic cells
B. prokaryotic cells formed spontaneously from amino acids
C. prokaryotic cells evolved from eukaryotic cells
D. eukaryotic cells evolved before prokaryotic cells
A - ansthe removal or destruction of all life forms is
A. sterilization
B. disinfection
C. antisepsis
D. asepsis
E. degerming
A - ansto select for streptomycin-resistant bacteria, cells should be grown on media
A - ansa capsule or slime that forms a layer on the outside of bacterial cells, allowing them to stick to surfaces,
is called a
A. glycocalyx
B. endospore
C. peptidoglycan
D. pellicle
A - ansa prokaryote that lacks peptidoglycan in its cell walls and typically lives in extreme environments is
called a
A. Archaean
B. protozoan
C. Bacterium
D. ALga
E. Fungus
A - ansa single celled organism with a nucleus and chloroplasts is a
A. Alga
B. Helminth
C. Virus
D. fungus
E. Bacterium
A - ansAerobic respiration differs from anaerobic respiration in which of the following respects?
A. The final electron acceptors are different
B. Aerobic respiration creates fewer molecules of ATP
C. ANaerobic respiration includes glycolysis
,D. Aerobic respiration requires the electron transport chain
A - ansAgrobacterium tumefaciens and Ti plasmids (which normally cause corwn gall disease) are used to
introduce foreign genes into
A. plants
B. E.coli
C. Yeast
D. Mammalian cells
A - ansBacterial endospores are killed by exposure to
A. autoclaving at 15 psi (121C) for 15 min
B. boiling at 100c for 30 min
C. high temp short time pasteurization
D. all of the above
E. none of the above
A - anscollections of clones containing random DNA fragments from a whole genome are called
A. genomic libraries
B. cDNA libraries
C. DNA fingerprints
D. proteomes
A - anshow do surface-active agents or surfactants work
A. remove microbes
B. kill microbes
C. inhibit microbes
, A - ansMitochondria are the sites of _________ in eukaryotic cells
A. Cellular respiration
B. enzyme packaging
C. photosynthesis
D. protein synthesis
A - ansMost bacteria grow best at a pH of approximately
A. 7
B. 1
C. 5
D. 9
E. 14
A - ansthe endosymbiotic theory hypothesizes that
A. eukaryotic cells evolved from prokaryotic cells
B. prokaryotic cells formed spontaneously from amino acids
C. prokaryotic cells evolved from eukaryotic cells
D. eukaryotic cells evolved before prokaryotic cells
A - ansthe removal or destruction of all life forms is
A. sterilization
B. disinfection
C. antisepsis
D. asepsis
E. degerming
A - ansto select for streptomycin-resistant bacteria, cells should be grown on media
