VBS 2032 Exam 1 Newest 2026 Questions and
Correct Detailed Answers Already Graded A+
What does the term "ubiquity" mean? - CORRECT ANSWER-Found everywhere
on the planet
An increase in the ___________will decrease the likelihood of infection. -
CORRECT ANSWER-Host immunity
Nitrogen fixation is an essential process carried out by: - CORRECT ANSWER-
Algae and bacteria
What two scientists are credited with discovering microorganisms? - CORRECT
ANSWER-Robert Hooke and Antoni van Leewenhoek
Is a virus considered a microorganism? Why or why not? - CORRECT ANSWER-
No because they are acellular and are not alive
What are some basic differences between prokaryotic and eukaryotic cells? -
CORRECT ANSWER-Eukaryotes have a nucleus and membrane bound
organelles whereas a prokaryote does not
,What are the relative sizes of a human cell, a protein, a virus and most bacteria? -
CORRECT ANSWER-Human cell: 10-100 microm, protein: 10 nm, virus: 100 nm,
bacteria 1-10 microm
What are some surprising places microbes are found? - CORRECT ANSWER-
Found in hot springs and nutrient poor environments beneath glaciers
How can microbes travel - CORRECT ANSWER-Air, skin to skin
We do not yet know the extent of microbial diversity. Why not? - CORRECT
ANSWER-Still developing new techniques for sequencing the DNA and RNA from
environmental samples
What are three ways in which microbial activity is essential for life on this planet?
- CORRECT ANSWER-Nitrogen fixation, recycling, and O2 production
Where are several places microbial biofilms can be found in daily life? -
CORRECT ANSWER-On teeth, on toilet bowls, in kitchen drains
,What are two ways microbes have changed that impact healthcare? - CORRECT
ANSWER-Microbes have become antibiotic and disinfectant resistant, they can
help boost your immune system
Most microbes are not harmful. What are some reasons for this? - CORRECT
ANSWER-They would have to be able to avoid our immune system, grow at body
temperature, and extract nutrients from tissues. This is difficult to do.
Your friend recently ate a salad containing a brand of spinach that was recalled
for contamination with E. coli. Can you explain to her the factors that will
influence whether or not she becomes ill? - CORRECT ANSWER-Number of
microbes- how many she consumed
Virulence of microbe- how well the microbes can evade her immune system
Host immunity- is she immune of immunocompromised?
What are some ways that the Chain of Infection can be broken? - CORRECT
ANSWER-Isolate and treat patient, wash hands and disinfect surfaces, vaccinate
Describe three ways our changing relationship with wildlife affects the emergence
of new infectious diseases. - CORRECT ANSWER-Habitat destruction, the
dilution effect, and the wildlife trade
, What can we do to avoid the next pandemic? - CORRECT ANSWER-Find out
what viruses there are in wildlife and work with the communities that are on the
front line
How are microorganisms named? - CORRECT ANSWER-Genus (name or shape)
first then species
Why did some scientists have difficulty achieving the same result as Pasteur with
the swan-necked flask? - CORRECT ANSWER-Since Pasteur used a yeast extract
and sugar broth there were no heat resistant microbes in his broth
What two scientists helped explain the conflicting data? - CORRECT ANSWER-
Tyndall and Cohn
Can you explain how the swan-necked flask experiment helped disprove the idea
of spontaneous generation? - CORRECT ANSWER-When the broth was boiled
the microbes got trapped in the curve of the neck, the broth did not become
cloudy until the flask was tipped and the microbes were reintroduced to the broth
How could the potato salad have been prepared safely? (Why did people become
ill?). - CORRECT ANSWER-If the potato salad was used with canned potatoes
Correct Detailed Answers Already Graded A+
What does the term "ubiquity" mean? - CORRECT ANSWER-Found everywhere
on the planet
An increase in the ___________will decrease the likelihood of infection. -
CORRECT ANSWER-Host immunity
Nitrogen fixation is an essential process carried out by: - CORRECT ANSWER-
Algae and bacteria
What two scientists are credited with discovering microorganisms? - CORRECT
ANSWER-Robert Hooke and Antoni van Leewenhoek
Is a virus considered a microorganism? Why or why not? - CORRECT ANSWER-
No because they are acellular and are not alive
What are some basic differences between prokaryotic and eukaryotic cells? -
CORRECT ANSWER-Eukaryotes have a nucleus and membrane bound
organelles whereas a prokaryote does not
,What are the relative sizes of a human cell, a protein, a virus and most bacteria? -
CORRECT ANSWER-Human cell: 10-100 microm, protein: 10 nm, virus: 100 nm,
bacteria 1-10 microm
What are some surprising places microbes are found? - CORRECT ANSWER-
Found in hot springs and nutrient poor environments beneath glaciers
How can microbes travel - CORRECT ANSWER-Air, skin to skin
We do not yet know the extent of microbial diversity. Why not? - CORRECT
ANSWER-Still developing new techniques for sequencing the DNA and RNA from
environmental samples
What are three ways in which microbial activity is essential for life on this planet?
- CORRECT ANSWER-Nitrogen fixation, recycling, and O2 production
Where are several places microbial biofilms can be found in daily life? -
CORRECT ANSWER-On teeth, on toilet bowls, in kitchen drains
,What are two ways microbes have changed that impact healthcare? - CORRECT
ANSWER-Microbes have become antibiotic and disinfectant resistant, they can
help boost your immune system
Most microbes are not harmful. What are some reasons for this? - CORRECT
ANSWER-They would have to be able to avoid our immune system, grow at body
temperature, and extract nutrients from tissues. This is difficult to do.
Your friend recently ate a salad containing a brand of spinach that was recalled
for contamination with E. coli. Can you explain to her the factors that will
influence whether or not she becomes ill? - CORRECT ANSWER-Number of
microbes- how many she consumed
Virulence of microbe- how well the microbes can evade her immune system
Host immunity- is she immune of immunocompromised?
What are some ways that the Chain of Infection can be broken? - CORRECT
ANSWER-Isolate and treat patient, wash hands and disinfect surfaces, vaccinate
Describe three ways our changing relationship with wildlife affects the emergence
of new infectious diseases. - CORRECT ANSWER-Habitat destruction, the
dilution effect, and the wildlife trade
, What can we do to avoid the next pandemic? - CORRECT ANSWER-Find out
what viruses there are in wildlife and work with the communities that are on the
front line
How are microorganisms named? - CORRECT ANSWER-Genus (name or shape)
first then species
Why did some scientists have difficulty achieving the same result as Pasteur with
the swan-necked flask? - CORRECT ANSWER-Since Pasteur used a yeast extract
and sugar broth there were no heat resistant microbes in his broth
What two scientists helped explain the conflicting data? - CORRECT ANSWER-
Tyndall and Cohn
Can you explain how the swan-necked flask experiment helped disprove the idea
of spontaneous generation? - CORRECT ANSWER-When the broth was boiled
the microbes got trapped in the curve of the neck, the broth did not become
cloudy until the flask was tipped and the microbes were reintroduced to the broth
How could the potato salad have been prepared safely? (Why did people become
ill?). - CORRECT ANSWER-If the potato salad was used with canned potatoes
