Microbial Control

Microbial Control

9th - 12th Grade

16 Qs

quiz-placeholder

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Microbial Control

Microbial Control

Assessment

Quiz

Biology

9th - 12th Grade

Medium

NGSS
HS-PS1-2, HS-PS1-5

Standards-aligned

Created by

R Christman

Used 26+ times

FREE Resource

16 questions

Show all answers

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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