Lab Module 11

Question 1

How many days did it take for the bacteria to mutate into this region?

A) 25
B) 5
C) 11
D) 1

Answer 1

Correct Answer:
C) 11

Question 2

Level 1 labs handle (BLANK).

A) None of these
B) Hazardous materials
C) Non-hazardous materials
D) Deadly pathogens

Answer 2

Correct Answer:
C) Non-hazardous materials

Question 3

To what is this arrow pointing?

A) Antibiotics
B) Oil
C) Mutant bacteria
D) Nothing

Answer 3

Correct Answer:
C) Mutant bacteria

Question 4

Personal protective equipment is used in labs to protect workers from exposure to pathogens. Which of the following is considered personal protective equipment?

A) Gowns
B) All of these
C) Gloves
D) Masks

Answer 4

Correct Answer:
B) All of these

Question 5

What is the multiplier for the amount of antibiotic in the middle area here represented by the question mark?

A) 10
B) 1
C) 100
D) 1,000

Answer 5

Correct Answer:
D) 1,000

Question 6

What does the study suggest about the temporal behavior of Rhodopseudomonas palustris when interacting with PFOA?

A) The bacteriUM initially absorbs PFOA, but its interaction with the compound changes over time.
B) The bacteriUM increasingly degrades PFOA as exposure time increases.
C) The bacteriUM’s uptake of PFOA remains constant throughout the experiment.
D) The bacteriUM expels PFOA immeDIately after meMBrane incorporation.

Answer 6

Correct Answer:
A) The bacteriUM initially absorbs PFOA, but its interaction with the compound changes over time.

Question 7

What is the most likely explanation for the release of PFOA back into the environment after initial removal by R. palustris?

A) Cell rupture leaDIng to the release of previously absorbed PFOA.
B) Active secretion mechanisms triggered by toxic stress.
C) Competition with other microbes for PFOA bINDing sites.
D) Reduced meMBrane permeability over time.

Answer 7

Correct Answer:
A) Cell rupture leaDIng to the release of previously absorbed PFOA.

Question 8

According to Aich, why is the collaboration between different scientific disciplines essential for addressing PFAS pollution?

A) PFAS challenges are primarily economic rather than technical.
B) PFAS degradation requires only microbiological expertise.
C) InterDIsciplinary approaches reduce the need for microbial engineering.
D) Complex environmental contaminants demand INTeGration of microbiology, engineering, and analytical science.

Answer 8

Correct Answer:
D) Complex environmental contaminants demand INTeGration of microbiology, engineering, and analytical science.

Question 9

According to Saha, what aspect of the findings offers potential for future PFAS remediation strategies?

A) Discovery that PFOA induces photosynthetic enhancement in the bacterium.
B) Demonstration that R. palustris naturally evolves to degrade PFOA over several generations.
C) The bacterium’s ability to rapidly mineralize PFOA under nutrient-limiting conditions.
D) Evidence that membrane trapping could serve as a starting point for engineered improvements.

Answer 9

Correct Answer:
D) Evidence that membrane trapping could serve as a starting point for engineered improvements.

Question 10

What future direction do the research teams plan to pursue based on their findings?

A) Moving away from microbial approaches due to their limited scalability.
B) Replacing biological treatments with high-temperature thermal destruction technologies.
C) Developing more energy-intensive chemical oxidation methods for PFAS removal.
D) Conducting studies using synthetic biology and microbial engineering to improve degradation potential.

Answer 10

Correct Answer:
D) Conducting studies using synthetic biology and microbial engineering to improve degradation potential.