Food Microbiology Exam queries and
answers graded
Antoine van Leeuwenhoek - ANS✅✅Dutch merchant responsible for developing the first
microscope to examine microorganisms
Louis Pasteur - ANS✅✅Microbiologist responsible for demonstrating that fermentation was due to
microbial growth AND developed pasteurization
The formal system for organizing, classifying, and naming living things. - ANS✅✅Taxonomy
Which is true about Koch's postulates?
A) Techniques for estimating CFU/ml
B) Linked a microscopic organism w/ a specific disease
C) Showed microbes caused fermentation and spoilage
D) Demonstrated what is now known as Germ Theory of Disease - ANS✅✅B_ Linked a microscopic
organisms with a specific disease
Which method cannot be used to classify microorganisms? - ANS✅✅Germ Theory
Which one is the correct scientific name for the bacteria?
A) listeria monocytogenes
B) Staphylococcus aureus
C) E. coli
D) Salmonella enterica - ANS✅✅B) Staphylococcus aureus
In which area can microorganisms be used?
A) Biotechnology
B) Genetic engineering
C) Bioremediation
D) All of the above - ANS✅✅D) All of the above
,Which microorganisms must infect a living host to reproduce? - ANS✅✅Viruses
Flagella and axial filaments function in the ___ of prokaryotic cells. - ANS✅✅Motility
The flagellar arrangement with a single flagella at one end is called - ANS✅✅Monotrichous
The bacterial shape that is gently curved is called: - ANS✅✅Vibrio
Which of the following is a prokaryotic microbe?
A) Teania solium (tape worm): Helminth
B) Saccharomyces cerevisia: Yeast
C) Giardia lamblia: Protozoa
D) Listeria monocytogenes: Bacteria - ANS✅✅D) Listeria monocytogenes: Bacteria
The encyclopedic five volume resource covering all known prokaryotes, classified based on genetic
info, is called: - ANS✅✅Bergey's Manual of Determinative Bacteriology
Which is NOT true of a prokaryote?
A) Cell membrane is made of phospholipid bilayer and sterols
B) Chromosome hold all genetic info the cell needs
C) Ribosome is the site of protein synthesis
D) 70-80% content of Cytoplasm is made of water - ANS✅✅A) Cell membrane is made of
phospholipid bilayer and sterols
How does a eukaryotic flagella differ from a prokaryotic flagella?
A) It contains microtubules in a 9x2 arrangement
B) It is covered by an extension of the cell membrane
C) It is 10x thicker
D) All of the above - ANS✅✅D) All of the above
Which is true of cilia?
A) Similar in overall structure to flagella but shorter and more numerous
, B) Found only in a single group of protoza and certain animal cells
C) Function in motility, feeding, and filtering
D) All - ANS✅✅D) All
Which is true of a chloroplast?
A) Converts the energy of sunlight into chemical energy through photosynthesis
B) Found only in algae and plant cells
C) Primary producers of organic nutrients for other organisms
D) All - ANS✅✅D) All
A mass of hyphae is called - ANS✅✅Mycelium
Protist is a short-hand term for - ANS✅✅Algae and protozoa
Which of the following is NOT a Eukaryotic microbe?
A) Teania solium (tapeworm): Helminth
B) Saccharomyces cerevisiae Yeast
C) Giardia lamblia: Protozoa
D) Listeria monocytogenes: Bacteria - ANS✅✅D) Listeria monocytogenes: bacteria
One of the most visible differences between prokaryotic and eukaryotic cells is - ANS✅✅Presence
of a nucleus in eukaryotes
A slime layer and capsules are two types of - ANS✅✅Glycocalyx
Which organelle is used to convert energy of sunlight into chemical energy? - ANS✅✅Chloroplast
Division of bacterial cells occurs mainly through - ANS✅✅Binary fission
At exactly 8 am we have a starting culture of 100 E. Coli cells that have a generation time of 30
minutes. At exactly 12 pm, how many generations have occurred? - ANS✅✅8
answers graded
Antoine van Leeuwenhoek - ANS✅✅Dutch merchant responsible for developing the first
microscope to examine microorganisms
Louis Pasteur - ANS✅✅Microbiologist responsible for demonstrating that fermentation was due to
microbial growth AND developed pasteurization
The formal system for organizing, classifying, and naming living things. - ANS✅✅Taxonomy
Which is true about Koch's postulates?
A) Techniques for estimating CFU/ml
B) Linked a microscopic organism w/ a specific disease
C) Showed microbes caused fermentation and spoilage
D) Demonstrated what is now known as Germ Theory of Disease - ANS✅✅B_ Linked a microscopic
organisms with a specific disease
Which method cannot be used to classify microorganisms? - ANS✅✅Germ Theory
Which one is the correct scientific name for the bacteria?
A) listeria monocytogenes
B) Staphylococcus aureus
C) E. coli
D) Salmonella enterica - ANS✅✅B) Staphylococcus aureus
In which area can microorganisms be used?
A) Biotechnology
B) Genetic engineering
C) Bioremediation
D) All of the above - ANS✅✅D) All of the above
,Which microorganisms must infect a living host to reproduce? - ANS✅✅Viruses
Flagella and axial filaments function in the ___ of prokaryotic cells. - ANS✅✅Motility
The flagellar arrangement with a single flagella at one end is called - ANS✅✅Monotrichous
The bacterial shape that is gently curved is called: - ANS✅✅Vibrio
Which of the following is a prokaryotic microbe?
A) Teania solium (tape worm): Helminth
B) Saccharomyces cerevisia: Yeast
C) Giardia lamblia: Protozoa
D) Listeria monocytogenes: Bacteria - ANS✅✅D) Listeria monocytogenes: Bacteria
The encyclopedic five volume resource covering all known prokaryotes, classified based on genetic
info, is called: - ANS✅✅Bergey's Manual of Determinative Bacteriology
Which is NOT true of a prokaryote?
A) Cell membrane is made of phospholipid bilayer and sterols
B) Chromosome hold all genetic info the cell needs
C) Ribosome is the site of protein synthesis
D) 70-80% content of Cytoplasm is made of water - ANS✅✅A) Cell membrane is made of
phospholipid bilayer and sterols
How does a eukaryotic flagella differ from a prokaryotic flagella?
A) It contains microtubules in a 9x2 arrangement
B) It is covered by an extension of the cell membrane
C) It is 10x thicker
D) All of the above - ANS✅✅D) All of the above
Which is true of cilia?
A) Similar in overall structure to flagella but shorter and more numerous
, B) Found only in a single group of protoza and certain animal cells
C) Function in motility, feeding, and filtering
D) All - ANS✅✅D) All
Which is true of a chloroplast?
A) Converts the energy of sunlight into chemical energy through photosynthesis
B) Found only in algae and plant cells
C) Primary producers of organic nutrients for other organisms
D) All - ANS✅✅D) All
A mass of hyphae is called - ANS✅✅Mycelium
Protist is a short-hand term for - ANS✅✅Algae and protozoa
Which of the following is NOT a Eukaryotic microbe?
A) Teania solium (tapeworm): Helminth
B) Saccharomyces cerevisiae Yeast
C) Giardia lamblia: Protozoa
D) Listeria monocytogenes: Bacteria - ANS✅✅D) Listeria monocytogenes: bacteria
One of the most visible differences between prokaryotic and eukaryotic cells is - ANS✅✅Presence
of a nucleus in eukaryotes
A slime layer and capsules are two types of - ANS✅✅Glycocalyx
Which organelle is used to convert energy of sunlight into chemical energy? - ANS✅✅Chloroplast
Division of bacterial cells occurs mainly through - ANS✅✅Binary fission
At exactly 8 am we have a starting culture of 100 E. Coli cells that have a generation time of 30
minutes. At exactly 12 pm, how many generations have occurred? - ANS✅✅8
