MBIO 3401 FINAL EXAM NEWEST 2025 ACTUAL EXAM COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
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A microbe is commonly defined as a that requires a microscope
to be seen -
Answer-living organism
what is the total magnification of the specimen, when we view a specimen in a
compound light microscope using a 10X ocular lens and a 100X objective lens -
Answer-1000X
(T/F) Microbes could not arise without parents -
Answer-True
Organisms that live symbiotically inside a larger organism are known
as -
Answer-endosymbionts
(T/F) All microbes are prokaryotic -
Answer-False
Microbes have no role in -
Answer-None have roles in:
-baking
-wine production
-yogurt making
The first person to describe bacteria viewed under a microscope was -
Answer-Antoni van Leeuwenhoek
which microbes undergo sporulation -
Answer-clostridium
the shortest lag period would most likely be observed in the transfer -
Answer-from complex medium to fresh complex medium
describe microaerophiles -
Answer-they require small oxygen concentration to grow
Many bacteria form specialized, surface-attached communities called- -
Answer-biofilm
human pathogens are -
Answer-mesophilic
are organisms adapted to grow at very high pressures -
Answer-Barophiles/piezophiles
, are proteins that infect animals -
Answer-prions
a bacteriophage is- -
Answer-a virus that infects a bacteria
,All of the following are used to classify viruses according to the ICTV except- -
Answer-mutation rate
conditions of an autoclave may be reproduced at home in a- -
Answer-pressure cooker
filtration of samples to remove microbial cells typically use micropore filters with pore
sizes of -
Answer-0.2 micrometers
a useful biocontrol alternative to antibiotics for treatment of biofilms that can potentially
lead to chronic infections is- -
Answer-bacteriophages
the entire genetic complement of DNA in a cell of a particular organism is called -
Answer-a genome
The general secretion complex known as the SecYEG translocon is found in the- -
Answer-inner membrane
what is depicted in the picture (inhibition zone in bacterial growth) -
Answer-antibiotic production has inhibited bacterial growth
Which of the following steps is not part of the life cycle of a lytic phage? -
Answer-the phage DNA integrates into the bacterial chromosome
Which of the following is incorrect about a virus -
Answer-it is a cellular particle
the term describes a polycistronic messenger RNA whose expression
is under control of a promoter -
Answer-operon
the nucleoids of bacteria and most archaea, as well as the nuclear DNA of eukaryotes,
are kept supercoiled -
Answer-negatively
enzymes that modify the supercoiling of a DNA molecule are called -
Answer-topoisomerases
In the figure below, which models DNA semiconservative replication, the numeral I
points to , II points to , and III points to -
Answer-new daughter strands, origin, replication fork
DNA and RNA polymerases can only synthesize in the direction -
, Answer-5'-3'
The largest bacteria known so far is -
Answer-thiomargarita namibiensis
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+|BRAND NEW!!
A microbe is commonly defined as a that requires a microscope
to be seen -
Answer-living organism
what is the total magnification of the specimen, when we view a specimen in a
compound light microscope using a 10X ocular lens and a 100X objective lens -
Answer-1000X
(T/F) Microbes could not arise without parents -
Answer-True
Organisms that live symbiotically inside a larger organism are known
as -
Answer-endosymbionts
(T/F) All microbes are prokaryotic -
Answer-False
Microbes have no role in -
Answer-None have roles in:
-baking
-wine production
-yogurt making
The first person to describe bacteria viewed under a microscope was -
Answer-Antoni van Leeuwenhoek
which microbes undergo sporulation -
Answer-clostridium
the shortest lag period would most likely be observed in the transfer -
Answer-from complex medium to fresh complex medium
describe microaerophiles -
Answer-they require small oxygen concentration to grow
Many bacteria form specialized, surface-attached communities called- -
Answer-biofilm
human pathogens are -
Answer-mesophilic
are organisms adapted to grow at very high pressures -
Answer-Barophiles/piezophiles
, are proteins that infect animals -
Answer-prions
a bacteriophage is- -
Answer-a virus that infects a bacteria
,All of the following are used to classify viruses according to the ICTV except- -
Answer-mutation rate
conditions of an autoclave may be reproduced at home in a- -
Answer-pressure cooker
filtration of samples to remove microbial cells typically use micropore filters with pore
sizes of -
Answer-0.2 micrometers
a useful biocontrol alternative to antibiotics for treatment of biofilms that can potentially
lead to chronic infections is- -
Answer-bacteriophages
the entire genetic complement of DNA in a cell of a particular organism is called -
Answer-a genome
The general secretion complex known as the SecYEG translocon is found in the- -
Answer-inner membrane
what is depicted in the picture (inhibition zone in bacterial growth) -
Answer-antibiotic production has inhibited bacterial growth
Which of the following steps is not part of the life cycle of a lytic phage? -
Answer-the phage DNA integrates into the bacterial chromosome
Which of the following is incorrect about a virus -
Answer-it is a cellular particle
the term describes a polycistronic messenger RNA whose expression
is under control of a promoter -
Answer-operon
the nucleoids of bacteria and most archaea, as well as the nuclear DNA of eukaryotes,
are kept supercoiled -
Answer-negatively
enzymes that modify the supercoiling of a DNA molecule are called -
Answer-topoisomerases
In the figure below, which models DNA semiconservative replication, the numeral I
points to , II points to , and III points to -
Answer-new daughter strands, origin, replication fork
DNA and RNA polymerases can only synthesize in the direction -
, Answer-5'-3'
The largest bacteria known so far is -
Answer-thiomargarita namibiensis
