Microbial Control
Quiz
•
Biology
•
9th - 12th Grade
•
Medium
Standards-aligned
R Christman
Used 27+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best describes the general mechanism of action for most disinfectants?
They increase the pH inside microbial cells, leading to cell death.
They disrupt the lipid bilayer of microbial cell membranes.
They act as a nutrient source for microorganisms, promoting their growth.
They increase the oxygen levels inside cells, leading to oxidative stress.
Tags
NGSS.HS-PS1-2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do alcohol-based disinfectants primarily kill bacteria?
By coagulating the cytoplasm
By inducing mutations in bacterial DNA
By dehydrating the cells
By denaturing proteins and dissolving lipids
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary mechanism of action for quaternary ammonium compounds (Quats) as disinfectants?
Oxidation of cell components
Disruption of cell wall synthesis
Disruption of membrane integrity
Inhibition of protein synthesis
Tags
NGSS.HS-PS1-2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chlorine-based disinfectants kill microbes by:
Causing hypermutation
Interfering with nutrient absorption
Oxidizing cellular components
Blocking cellular respiration
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do phenolic disinfectants primarily function?
By alkylating DNA and RNA
By disrupting cell walls and membranes
By inhibiting enzymatic activity
By precipitating proteins
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which mechanism of action is associated with hydrogen peroxide as a disinfectant?
Catalyzing the hydrolysis of cell wall components
Producing free radicals that damage cellular components
Blocking the synthesis of nucleic acids
Inhibiting the electron transport chain
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ethylene oxide is used as a disinfectant for heat-sensitive medical equipment because it:
Causes covalent cross-linking of DNA and proteins
Induces lipid peroxidation in microbial membranes
Generates superoxide anions that oxidize cellular components
Hydrolyzes peptidoglycan in bacterial cell walls
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