MICROBIOLOGY FINAL EXAM- MULTIPLE
CHOICE QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS)
____________ _____________ can completely alter the
species composition of the intestinal microbiome -
correct answer- Antibiotic treatment
A cell that uses an organic carbon source and obtains
energy from light would be called a - correct
answer- Photoheterotroph
A cells genome consists of 20% thymine and what
percentage of guanine? - correct answer- 30%
A sample of milk is tested for its bacterial content in a
plate count assay. A one-milliliter sample of the milk is
diluted in a 1:10 dilution series. One milliliter of the third
dilution tube is plated in a pour plate. After incubation,
the plate has 54 colonies, indicating that the original milk
sample contained? - correct answer- 5400 cells
,Advantage of the direct microbe count - correct
answer- Require no incubation time
Agar is used as solidifying agent in microbial culture
media, because few species can degrade it (T/F) -
correct answer- True
Agents transmitted by mosquitos enter human hosts via
what portal of entry? - correct answer-
Parenteral route
An experiment began with 4 cells and ended with 128
cells. How many generations did the cells go through? -
correct answer- 5
Bacteria exhibit several different mechanisms for
antibiotic resistance. Bacteria that produce beta
lactamase are resistant to penicillin because - correct
answer- The antibiotic is destroyed before it gets
into the host cell
, Bacterial cell wall offers protection against - correct
answer- Hypotonic environment
Bacterial process not driven by PMF - correct
answer- Nitrogen fixation
Best candidate to treat candidiasis infection caused by
Candida albicans? - correct answer- Flucytosine
Biomolecules and descriptions matched incorrectly -
correct answer- Lipid- polysaccharide found in
membranes
Both respiration and photosynthesis require the use of an
electron transport chain (T/F) - correct answer-
True
Consider the above image (left to right phage, TMV,
measles). What logical conclusion can be made from
observing these three images? - correct answer-
Viruses can infect both prokaryotic and eukaryotic cells
CHOICE QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS)
____________ _____________ can completely alter the
species composition of the intestinal microbiome -
correct answer- Antibiotic treatment
A cell that uses an organic carbon source and obtains
energy from light would be called a - correct
answer- Photoheterotroph
A cells genome consists of 20% thymine and what
percentage of guanine? - correct answer- 30%
A sample of milk is tested for its bacterial content in a
plate count assay. A one-milliliter sample of the milk is
diluted in a 1:10 dilution series. One milliliter of the third
dilution tube is plated in a pour plate. After incubation,
the plate has 54 colonies, indicating that the original milk
sample contained? - correct answer- 5400 cells
,Advantage of the direct microbe count - correct
answer- Require no incubation time
Agar is used as solidifying agent in microbial culture
media, because few species can degrade it (T/F) -
correct answer- True
Agents transmitted by mosquitos enter human hosts via
what portal of entry? - correct answer-
Parenteral route
An experiment began with 4 cells and ended with 128
cells. How many generations did the cells go through? -
correct answer- 5
Bacteria exhibit several different mechanisms for
antibiotic resistance. Bacteria that produce beta
lactamase are resistant to penicillin because - correct
answer- The antibiotic is destroyed before it gets
into the host cell
, Bacterial cell wall offers protection against - correct
answer- Hypotonic environment
Bacterial process not driven by PMF - correct
answer- Nitrogen fixation
Best candidate to treat candidiasis infection caused by
Candida albicans? - correct answer- Flucytosine
Biomolecules and descriptions matched incorrectly -
correct answer- Lipid- polysaccharide found in
membranes
Both respiration and photosynthesis require the use of an
electron transport chain (T/F) - correct answer-
True
Consider the above image (left to right phage, TMV,
measles). What logical conclusion can be made from
observing these three images? - correct answer-
Viruses can infect both prokaryotic and eukaryotic cells
