Straighterline microbiology BIO250 Topic 12: Microbe-Human Interactions:
Health and Disease Graded Exam 3 Questions and Answers (2025)
• BIO250_SL_V7
• Topic 12: Microbe-Human Interactions: Health and Disease
Started on Thursday, February 6, 2025, 3:34 PM
State Finished
Completed on Thursday, February 6, 2025, 4:02 PM
Time taken 27 mins 53 secs
Grade 115.00 out of 125.00 (92%)
Question 1
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Question text
Which of the following statements about autoclaves is TRUE?
Select one:
a.
They produce distinct odors when metabolizing.Autoclaves are capable of
both gravity displacement and prevacuum cycles.
b.
Autoclaves rely on dry-heat sterilization.
c.
Prevacuum sterilizers introduce steam into the chamber from the bottom.
d.
Gravity displacement autoclaves remove air completely using a high-speed
vacuum.
,Question 2
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How do phenolics primarily inhibit microbial growth?
Select one:
a.
By enhancing microbial metabolism
b.
A cyclic structure with alternating single and double bonds by inhibiting
microbial reproduction
c.
By denaturing proteins and disrupting membranes
d.
By disrupting microbial DNA
Question 3
Correct
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Question text
A researcher is developing a new microbial control protocol for use in a
hospital setting. Which scenario best exemplifies the design and
implementation of this protocol?
Select one:
a.
The researcher selects a disinfectant agent based solely on its popularity in
the industry without considering its efficacy against common hospital-
acquired pathogens.
b.
The researcher relies solely on laboratory testing results to determine the
effectiveness of the new protocol, without conducting real-world trials in a
hospital environment.
c.
, The researcher conducts a thorough literature review to understand the
factors contributing to the strengths and limitations of existing microbial
control protocols before designing the new protocol.
d.
The researcher decides to test the new protocol only on surfaces that are
easily accessible, without considering areas prone to microbial colonization
and transmission.
Question 4
Correct
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Question text
What is the primary purpose of pasteurization in food processing?
Select one:
a.
To extend the shelf life of food products by inhibiting the growth of harmful
bacteria
b.
To enhance the flavor and texture of food products by exposing them to high
heat
c.
To eliminate the need for refrigeration in storing food products for extended
periods
d.
To completely sterilize food products and eliminate all microbial
contamination
Question 5
Correct
5.00 points out of 5.00
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Question text
Read the following statement and Reason and choose the correct option.
Statement: Freezing food items below −2 °C can stop microbial growth and
even kill susceptible organisms.
Health and Disease Graded Exam 3 Questions and Answers (2025)
• BIO250_SL_V7
• Topic 12: Microbe-Human Interactions: Health and Disease
Started on Thursday, February 6, 2025, 3:34 PM
State Finished
Completed on Thursday, February 6, 2025, 4:02 PM
Time taken 27 mins 53 secs
Grade 115.00 out of 125.00 (92%)
Question 1
Correct
5.00 points out of 5.00
Flag question
Question text
Which of the following statements about autoclaves is TRUE?
Select one:
a.
They produce distinct odors when metabolizing.Autoclaves are capable of
both gravity displacement and prevacuum cycles.
b.
Autoclaves rely on dry-heat sterilization.
c.
Prevacuum sterilizers introduce steam into the chamber from the bottom.
d.
Gravity displacement autoclaves remove air completely using a high-speed
vacuum.
,Question 2
Correct
5.00 points out of 5.00
Flag question
Question text
How do phenolics primarily inhibit microbial growth?
Select one:
a.
By enhancing microbial metabolism
b.
A cyclic structure with alternating single and double bonds by inhibiting
microbial reproduction
c.
By denaturing proteins and disrupting membranes
d.
By disrupting microbial DNA
Question 3
Correct
5.00 points out of 5.00
Flag question
Question text
A researcher is developing a new microbial control protocol for use in a
hospital setting. Which scenario best exemplifies the design and
implementation of this protocol?
Select one:
a.
The researcher selects a disinfectant agent based solely on its popularity in
the industry without considering its efficacy against common hospital-
acquired pathogens.
b.
The researcher relies solely on laboratory testing results to determine the
effectiveness of the new protocol, without conducting real-world trials in a
hospital environment.
c.
, The researcher conducts a thorough literature review to understand the
factors contributing to the strengths and limitations of existing microbial
control protocols before designing the new protocol.
d.
The researcher decides to test the new protocol only on surfaces that are
easily accessible, without considering areas prone to microbial colonization
and transmission.
Question 4
Correct
5.00 points out of 5.00
Flag question
Question text
What is the primary purpose of pasteurization in food processing?
Select one:
a.
To extend the shelf life of food products by inhibiting the growth of harmful
bacteria
b.
To enhance the flavor and texture of food products by exposing them to high
heat
c.
To eliminate the need for refrigeration in storing food products for extended
periods
d.
To completely sterilize food products and eliminate all microbial
contamination
Question 5
Correct
5.00 points out of 5.00
Flag question
Question text
Read the following statement and Reason and choose the correct option.
Statement: Freezing food items below −2 °C can stop microbial growth and
even kill susceptible organisms.
