BIO-205 Microbiology Midterm Exam Latest
Update 2024-2025 Actual Exam from Credible
Source with 160 Questions and 100% Verified
Correct Answers Guaranteed A+ Approved by
Professor
A breath test assaying for radioactive carbon dioxide may be used to indicate the
presence of - CORRECT ANSWER: Helicobacter pylori
A clever technique that streamlines the identification of auxotrophic mutants is -
CORRECT ANSWER: replica plating
A hot tub would most likely contain - CORRECT ANSWER: mesophiles
A key feature of a viral infections is the - CORRECT ANSWER: separation of viral
nucleic acid from the capsid
A limiting factors for viral infection is - CORRECT ANSWER: presence of specific
receptor molecules on the host cell
A medium that enhances the growth of one particular organism and inhibits the growth
of organisms other than one being sought in a mixed population is termed a(n) -
CORRECT ANSWER: selective medium
A phage that replicates inside the host cell and then lyses its host during its release is a
- CORRECT ANSWER: virulent or lytic phage
A quick microbiological test for potential carcinogens was developed by - CORRECT
ANSWER: Ames
,A selective growth medium - CORRECT ANSWER: allows only certain bacteria to grow
A soluble greenish pigment is produced by - CORRECT ANSWER: Pseudomonas
aeruginosa
A tangle of fungal hyphae is generally known as a - CORRECT ANSWER: mycelium
A urine sample with more than 100,000 organisms is considered indicative of infection.
If a urine sample containing 5,000 bacteria with a generation time of 30 minutes sits for
3 hours before finally being assayed, how many bacteria will then be present? -
CORRECT ANSWER: 320,000
A virion is a(n) - CORRECT ANSWER: complete, extracellular virus particle
Aflatoxins - CORRECT ANSWER: are produced by Aspergillus, are possible
carcinogens, may be found in peanuts, and are toxins.
Agar - CORRECT ANSWER: has chemical and physical properties that make it almost
ideal for solidifying media
All fungi have ____ in their cell walls. - CORRECT ANSWER: chitin
All known species of bacteria are described in Bergey's Manual of Systematic
Bacteriology. - CORRECT ANSWER: True
All the bacterial cells that result from the replication of a single organism are said to be -
CORRECT ANSWER: pure culture
Allosteric enzymes - CORRECT ANSWER: have an additional binding site that is
involved in regulating enzyme activity
, An infection in which the virus is continually present in the body is referred to as -
CORRECT ANSWER: persistent
Bacteria are useful to study because - CORRECT ANSWER: They produce protein in a
similar manner to more complex organisms.
They replicate DNA in a similar manner to more complex organisms.
They produce energy in a similar manner to more complex organisms.
They are grown quickly, easily, and cheaply.
Bacteria may be stored - CORRECT ANSWER: on a slant in the refrigerator, frozen in
glycerol solution, and lyophilized
Bacteriophages and animal viruses - CORRECT ANSWER: differ because
bacteriophages leave the capsid outside the cell, while animal virus entry involves the
entry of the whole nucleocapsid.
Biofilms - CORRECT ANSWER: are a polysaccharide-encased community of
microorganisms, may enhance bioremediation efforts, and may protect organisms
against harmful chemicals.
Bioremediation refers to - CORRECT ANSWER: using bacteria to clean up pollutants
Biosynthetic reactions that require energy for the conversion of molecular subunits into
larger molecules are called - CORRECT ANSWER: anabolic reactions
Blood agar - CORRECT ANSWER: is often used to culture clinically relevant bacteria
and may be used as a differential media
Carbon, hydrogen, oxygen, nitrogen, phosphorous, and sulfur may be considered -
CORRECT ANSWER: major elements
Update 2024-2025 Actual Exam from Credible
Source with 160 Questions and 100% Verified
Correct Answers Guaranteed A+ Approved by
Professor
A breath test assaying for radioactive carbon dioxide may be used to indicate the
presence of - CORRECT ANSWER: Helicobacter pylori
A clever technique that streamlines the identification of auxotrophic mutants is -
CORRECT ANSWER: replica plating
A hot tub would most likely contain - CORRECT ANSWER: mesophiles
A key feature of a viral infections is the - CORRECT ANSWER: separation of viral
nucleic acid from the capsid
A limiting factors for viral infection is - CORRECT ANSWER: presence of specific
receptor molecules on the host cell
A medium that enhances the growth of one particular organism and inhibits the growth
of organisms other than one being sought in a mixed population is termed a(n) -
CORRECT ANSWER: selective medium
A phage that replicates inside the host cell and then lyses its host during its release is a
- CORRECT ANSWER: virulent or lytic phage
A quick microbiological test for potential carcinogens was developed by - CORRECT
ANSWER: Ames
,A selective growth medium - CORRECT ANSWER: allows only certain bacteria to grow
A soluble greenish pigment is produced by - CORRECT ANSWER: Pseudomonas
aeruginosa
A tangle of fungal hyphae is generally known as a - CORRECT ANSWER: mycelium
A urine sample with more than 100,000 organisms is considered indicative of infection.
If a urine sample containing 5,000 bacteria with a generation time of 30 minutes sits for
3 hours before finally being assayed, how many bacteria will then be present? -
CORRECT ANSWER: 320,000
A virion is a(n) - CORRECT ANSWER: complete, extracellular virus particle
Aflatoxins - CORRECT ANSWER: are produced by Aspergillus, are possible
carcinogens, may be found in peanuts, and are toxins.
Agar - CORRECT ANSWER: has chemical and physical properties that make it almost
ideal for solidifying media
All fungi have ____ in their cell walls. - CORRECT ANSWER: chitin
All known species of bacteria are described in Bergey's Manual of Systematic
Bacteriology. - CORRECT ANSWER: True
All the bacterial cells that result from the replication of a single organism are said to be -
CORRECT ANSWER: pure culture
Allosteric enzymes - CORRECT ANSWER: have an additional binding site that is
involved in regulating enzyme activity
, An infection in which the virus is continually present in the body is referred to as -
CORRECT ANSWER: persistent
Bacteria are useful to study because - CORRECT ANSWER: They produce protein in a
similar manner to more complex organisms.
They replicate DNA in a similar manner to more complex organisms.
They produce energy in a similar manner to more complex organisms.
They are grown quickly, easily, and cheaply.
Bacteria may be stored - CORRECT ANSWER: on a slant in the refrigerator, frozen in
glycerol solution, and lyophilized
Bacteriophages and animal viruses - CORRECT ANSWER: differ because
bacteriophages leave the capsid outside the cell, while animal virus entry involves the
entry of the whole nucleocapsid.
Biofilms - CORRECT ANSWER: are a polysaccharide-encased community of
microorganisms, may enhance bioremediation efforts, and may protect organisms
against harmful chemicals.
Bioremediation refers to - CORRECT ANSWER: using bacteria to clean up pollutants
Biosynthetic reactions that require energy for the conversion of molecular subunits into
larger molecules are called - CORRECT ANSWER: anabolic reactions
Blood agar - CORRECT ANSWER: is often used to culture clinically relevant bacteria
and may be used as a differential media
Carbon, hydrogen, oxygen, nitrogen, phosphorous, and sulfur may be considered -
CORRECT ANSWER: major elements
