EXAM QUESTIONS AND ANSWERS
FOR MCB3020
Microorganisms assimilate large amounts of all of the following
except ______ into organic molecules. - CORRECT ANSWERsodium
An agent that specifically kills fungi but not other kinds of
microorganisms is also known as a - CORRECT ANSWERFungicidal Ag...
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
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