MCB3023 EXAM 1 QUESTIONS AND
ANSWERS 100% CORRECT
The study of microbiology includes all of the following EXCEPT _____ .
a) plants
b) viruses
c) bacteria
d) fungi
e) algae - ANSWER-a) plants
This early microbiologist used a swan-necked flask to help disprove the Theory of
Spontaneous Generation.
a) Louis Pasteur
b) Edward Jenner
c) Robert Koch
d) John Tyndall
e) Anton van Leeuwenhoek - ANSWER-a) Louis Pasteur
Which of these are fossilized microbial mats containing photosynthetic bacteria?
a) Stromatolites
b) Biofilms
c) Resin
d) Cyanobacteria
e) Stalagmites - ANSWER-a) Stromatolites
Which best describes the chemical structure of the Bacteria domain cytoplasmic
membrane?
a) A bilayer of phospholipids.
b) A monolayer of phospholipids.
c) A monolayer of phospholipids with sterols.
d) A bilayer of phospholipids with sterols.
e) A trilayer of phospholipids. - ANSWER-a) A bilayer of phospholipids.
Which is the correct distinction between a heterotroph and an autotroph?
a) An autotroph utilizes organic compounds as a carbon source and a heterotroph
uses carbon dioxide as a carbon source.
b) An autotroph utilizes carbon dioxide as a carbon source and a heterotroph utilizes
organic compounds as a carbon source.
c) An autotroph utilizes complex organic compounds as a carbon source and a
heterotroph utilizes simple organic compounds as a carbon source.
d) An autotroph utilizes carbon dioxide as an energy source and a heterotroph
utilizes organic compounds as an energy source.
, e) an autotroph utilizes organic compounds as an energy source and a heterotroph
utilizes carbon dioxide as an energy source . - ANSWER-b) An autotroph utilizes
carbon dioxide as a carbon source and a heterotroph utilizes organic compounds as
a carbon source.
-heterotroph: obtain carbon from organic molecules
-autotroph: obtains carbon from carbon dioxide
What is the Endosymbiotic Theory is used to explain?
a) the rapid evolution of viruses
b) antiphagocytic abilities of parasitic protozoa
c) pathogenicity of parasitic bacteria
d) presence of mitochondria in eukaryotes
e) development of the nucleus in eukaryotes - ANSWER-d) presence of
mitochondria in eukaryotes
Most viruses with helical capsid symmetry contain _______ as their nucleic acid.
a) single-stranded DNA
b) single-stranded RNA
c) double-stranded DNA
d) double-stranded RNA
e) RNA/DNA dimer - ANSWER-b) single-stranded RNA
Which medium is used to allow slow-growing microbes to gain a competitive growth
advantage?
a) enrichment
b) selective
c) differential
d) general purpose
e) all work equally well for this purpose - ANSWER-a) enrichment
Which of these methods will ensure sterility? - ANSWER--heating up solution with
agar in it
-the agar than melts and the solution becomes sterile
-so then u can make an agar plate and ensure sterility
This early microbiology pioneer developed a set of criteria for linking a specific
microorganism to a specific disease.
a) Louis Pasteur
b) Edward Jenner
c) Robert Koch
d) John Tyndall
e) Anton van Leeuwenhoek - ANSWER-c) Robert Koch
ANSWERS 100% CORRECT
The study of microbiology includes all of the following EXCEPT _____ .
a) plants
b) viruses
c) bacteria
d) fungi
e) algae - ANSWER-a) plants
This early microbiologist used a swan-necked flask to help disprove the Theory of
Spontaneous Generation.
a) Louis Pasteur
b) Edward Jenner
c) Robert Koch
d) John Tyndall
e) Anton van Leeuwenhoek - ANSWER-a) Louis Pasteur
Which of these are fossilized microbial mats containing photosynthetic bacteria?
a) Stromatolites
b) Biofilms
c) Resin
d) Cyanobacteria
e) Stalagmites - ANSWER-a) Stromatolites
Which best describes the chemical structure of the Bacteria domain cytoplasmic
membrane?
a) A bilayer of phospholipids.
b) A monolayer of phospholipids.
c) A monolayer of phospholipids with sterols.
d) A bilayer of phospholipids with sterols.
e) A trilayer of phospholipids. - ANSWER-a) A bilayer of phospholipids.
Which is the correct distinction between a heterotroph and an autotroph?
a) An autotroph utilizes organic compounds as a carbon source and a heterotroph
uses carbon dioxide as a carbon source.
b) An autotroph utilizes carbon dioxide as a carbon source and a heterotroph utilizes
organic compounds as a carbon source.
c) An autotroph utilizes complex organic compounds as a carbon source and a
heterotroph utilizes simple organic compounds as a carbon source.
d) An autotroph utilizes carbon dioxide as an energy source and a heterotroph
utilizes organic compounds as an energy source.
, e) an autotroph utilizes organic compounds as an energy source and a heterotroph
utilizes carbon dioxide as an energy source . - ANSWER-b) An autotroph utilizes
carbon dioxide as a carbon source and a heterotroph utilizes organic compounds as
a carbon source.
-heterotroph: obtain carbon from organic molecules
-autotroph: obtains carbon from carbon dioxide
What is the Endosymbiotic Theory is used to explain?
a) the rapid evolution of viruses
b) antiphagocytic abilities of parasitic protozoa
c) pathogenicity of parasitic bacteria
d) presence of mitochondria in eukaryotes
e) development of the nucleus in eukaryotes - ANSWER-d) presence of
mitochondria in eukaryotes
Most viruses with helical capsid symmetry contain _______ as their nucleic acid.
a) single-stranded DNA
b) single-stranded RNA
c) double-stranded DNA
d) double-stranded RNA
e) RNA/DNA dimer - ANSWER-b) single-stranded RNA
Which medium is used to allow slow-growing microbes to gain a competitive growth
advantage?
a) enrichment
b) selective
c) differential
d) general purpose
e) all work equally well for this purpose - ANSWER-a) enrichment
Which of these methods will ensure sterility? - ANSWER--heating up solution with
agar in it
-the agar than melts and the solution becomes sterile
-so then u can make an agar plate and ensure sterility
This early microbiology pioneer developed a set of criteria for linking a specific
microorganism to a specific disease.
a) Louis Pasteur
b) Edward Jenner
c) Robert Koch
d) John Tyndall
e) Anton van Leeuwenhoek - ANSWER-c) Robert Koch
