Exam 1 Questions MCB3020 Bacusmo
UPDATED ACTUAL Questions and
CORRECT Answers
Microorganisms assimilate large amounts of all of the following except ______ into organic
molecules. - CORRECT ANSWER - sodium
An agent that specifically kills fungi but not other kinds of microorganisms is also known as a -
CORRECT ANSWER - Fungicidal Agent
Gram staining divides bacterial species into two groups based on differences in cell wall
structure. - CORRECT ANSWER - True
Sterilization involves __________ all viable microorganisms. - CORRECT ANSWER -
Killing OR Removing
Photoautotrophs use light energy directly for - CORRECT ANSWER - the production of
ATP and NADPH
Who of the following was the first to observe and accurately describe microorganisms? -
CORRECT ANSWER - Van Leeuwenhoek
Which cellular shape is seen among members of domain Bacteria that is not found among the
domain Archaea? - CORRECT ANSWER - Spiral or Corkscrew shapes
All the following are methods of prion disease transmission EXCEPT - CORRECT
ANSWER - Inhalation (airborne)
gamma radiation - CORRECT ANSWER - is used to sterilize some food products
, In bacterial and archaeal cells, the electron transport chain is located in the _________ whereas
in eukaryotic cells, the electron transport chain is located in the ____________. - CORRECT
ANSWER - plasma membrane; inner mitochondrial membrane
Which of the following is considered to be a differential staining procedure? - CORRECT
ANSWER - Both Gram stain and Acid-fast stain
The prevention of infection caused by microorganisms is called - CORRECT ANSWER -
antisepsis.
One hypothesis about the decline in cell numbers during death phase is that the cells aren't all
dying but instead remain alive but unable to grow when cultured, at least temporarily. These are
known as - CORRECT ANSWER - viable but nonculturable cells
The substantial reduction of the total population of microorganisms on inanimate objects and the
destruction of potential pathogens is called - CORRECT ANSWER - disinfection.
The two most important alcohol germicides are __________ and __________. - CORRECT
ANSWER - ethanol; isopropanol
The most notable difference between PrPC (normal protein) and PrPSc (prion protein) is -
CORRECT ANSWER - PrPc folds appropriately whereas PrPSc does not fold correctly.
The reduction of the microbial population to levels that are considered safe by public health
standards is called - CORRECT ANSWER - sanitization.
Some photosynthetic bacteria produce gas vacuoles that regulate their buoyancy but contain no
lipid. - CORRECT ANSWER - True
The amount of ATP produced during anaerobic respiration is ___________ that produced during
aerobic respiration, because the difference in the standard reduction potential between NADH
UPDATED ACTUAL Questions and
CORRECT Answers
Microorganisms assimilate large amounts of all of the following except ______ into organic
molecules. - CORRECT ANSWER - sodium
An agent that specifically kills fungi but not other kinds of microorganisms is also known as a -
CORRECT ANSWER - Fungicidal Agent
Gram staining divides bacterial species into two groups based on differences in cell wall
structure. - CORRECT ANSWER - True
Sterilization involves __________ all viable microorganisms. - CORRECT ANSWER -
Killing OR Removing
Photoautotrophs use light energy directly for - CORRECT ANSWER - the production of
ATP and NADPH
Who of the following was the first to observe and accurately describe microorganisms? -
CORRECT ANSWER - Van Leeuwenhoek
Which cellular shape is seen among members of domain Bacteria that is not found among the
domain Archaea? - CORRECT ANSWER - Spiral or Corkscrew shapes
All the following are methods of prion disease transmission EXCEPT - CORRECT
ANSWER - Inhalation (airborne)
gamma radiation - CORRECT ANSWER - is used to sterilize some food products
, In bacterial and archaeal cells, the electron transport chain is located in the _________ whereas
in eukaryotic cells, the electron transport chain is located in the ____________. - CORRECT
ANSWER - plasma membrane; inner mitochondrial membrane
Which of the following is considered to be a differential staining procedure? - CORRECT
ANSWER - Both Gram stain and Acid-fast stain
The prevention of infection caused by microorganisms is called - CORRECT ANSWER -
antisepsis.
One hypothesis about the decline in cell numbers during death phase is that the cells aren't all
dying but instead remain alive but unable to grow when cultured, at least temporarily. These are
known as - CORRECT ANSWER - viable but nonculturable cells
The substantial reduction of the total population of microorganisms on inanimate objects and the
destruction of potential pathogens is called - CORRECT ANSWER - disinfection.
The two most important alcohol germicides are __________ and __________. - CORRECT
ANSWER - ethanol; isopropanol
The most notable difference between PrPC (normal protein) and PrPSc (prion protein) is -
CORRECT ANSWER - PrPc folds appropriately whereas PrPSc does not fold correctly.
The reduction of the microbial population to levels that are considered safe by public health
standards is called - CORRECT ANSWER - sanitization.
Some photosynthetic bacteria produce gas vacuoles that regulate their buoyancy but contain no
lipid. - CORRECT ANSWER - True
The amount of ATP produced during anaerobic respiration is ___________ that produced during
aerobic respiration, because the difference in the standard reduction potential between NADH
