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Microbes and Infection Control Quiz

Total questions: 55

Worksheet time: 28mins

Name
Class
Date
1.

Which of the following best defines a microbe?

a)

A non-living particle found in the air

b)

A tiny living organism all around us

c)

A large organism visible to the naked eye

d)

A harmful chemical substance

2.

What is a pathogen?

a)

A helpful microbe that aids digestion

b)

A type of virus that only infects plants

c)

A harmful microbe that causes disease

d)

A harmless organism found in water

3.

Which of the following is NOT a type of microbe?

a)

Bacteria

b)

Viruses

c)

Fungi

d)

Minerals

4.

Why is it important to prevent infection in healthcare and imaging rooms?

a)

To protect only the patients

b)

To protect only the staff

c)

To protect patients, staff, and yourself

d)

To keep the rooms clean for visitors

5.

Which practice is directly linked to patient safety according to the material?

a)

Wearing gloves at all times

b)

Clean hands

c)

Using antibiotics

d)

Wearing a mask

6.

What type of organisms are bacteria?

a)

Multi-celled plants

b)

Single-celled microorganisms

c)

Fungi

d)

Viruses

7.

Are bacteria considered living or nonliving?

a)

Nonliving

b)

Living

c)

Both living and nonliving

d)

Only living in water

8.

Which of the following is a helpful role of bacteria?

a)

Causing pneumonia

b)

Causing strep throat

c)

Aiding digestion

d)

Causing tuberculosis

9.

What is a common treatment for bacterial infections?

a)

Antivirals

b)

Vaccines

c)

Antibiotics

d)

Antifungals

10.

Why is antibiotic resistance a problem in treating bacterial infections?

a)

It makes bacteria easier to kill

b)

It causes bacteria to become viruses

c)

It makes antibiotics less effective

d)

It only affects Gram-negative bacteria

11.

Which of the following are bacterial diseases? (Check all that apply)

a)

Strep throat

b)

Flu

c)

Tuberculosis

d)

Pneumonia

12.

How do bacteria reproduce?

a)

They need a host cell to divide

b)

They reproduce by budding

c)

They divide on their own

d)

They split only in the presence of light

13.

Which of the following diseases can be caused by bacteria?

a)

Malaria, Influenza, Chickenpox

b)

Strep throat, Tuberculosis, Pneumonia

c)

Diabetes, Hypertension, Asthma

d)

Measles, Mumps, Rubella

14.

Which of the following best describes viruses?

a)

Living organisms that can reproduce on their own

b)

Tiny non-living particles that invade living cells

c)

Bacteria that cause diseases

d)

Fungi that infect plants

15.

What do viruses use to reproduce?

a)

Their own cellular machinery

b)

Host cell’s machinery

c)

Sunlight and water

d)

Soil nutrients

16.

Which of the following are viral infections? (Select all that apply)

a)

COVID-19

b)

Influenza

c)

Ringworm

d)

HIV

17.

Which of the following statements is true about the size of viruses compared to bacteria?

a)

Viruses are larger than bacteria.

b)

Viruses are smaller than bacteria.

c)

Viruses are the same size as bacteria.

d)

Viruses are not comparable in size to bacteria.

18.

Which of the following are examples of diseases caused by viruses?

a)

Tuberculosis, Malaria, Diabetes

b)

COVID-19, Influenza, HIV

c)

Strep throat, Chickenpox, Asthma

d)

Measles, Arthritis, Hypertension

19.

Which of the following is a characteristic of fungi?

a)

They are non-living organisms

b)

They reproduce by seeds

c)

They reproduce by spores

d)

They are always harmful

20.

Fungi thrive best in what type of environment?

a)

Cold and dry

b)

Hot and dry

c)

Warm and moist

d)

Cool and windy

21.

Fungi can reproduce by forming spores. Is this statement true or false?

a)

True

b)

False

22.

Which of the following are fungal infections? (Select all that apply)

a)

Ringworm

b)

TB

c)

Athlete’s foot

d)

Malaria

23.

Which of the following best describes protozoa?

a)

Multi-celled, plant-like organisms in dry areas.

b)

Single-celled, animal-like organisms in water/moist areas.

c)

Single-celled, plant-like organisms in water/moist areas.

d)

Multi-celled, animal-like organisms in dry areas.

24.

How do protozoa reproduce?

a)

Only by budding.

b)

Only by binary fission.

c)

By dividing or sexually.

d)

By spore formation.

25.

What is a common way protozoa are spread?

a)

Airborne transmission.

b)

Contaminated water/food or insects.

c)

Direct skin contact.

d)

Through animal bites only.

26.

Protozoa are nonliving. (True or False)

a)

True

b)

False

27.

Which diseases are caused by protozoa? (Check all that apply)

a)

Malaria

b)

Strep throat

c)

Giardia

d)

Measles

28.

Which of the following types of microorganisms is NOT considered living?

a)

Bacteria

b)

Virus

c)

Fungi

d)

Protozoa

29.

Which of the following best describes the "Infectious Agent" in the chain of infection?

a)

The place where the germ grows and multiplies

b)

The way germs leave the body

c)

The pathogen that causes disease

d)

The person who can't fight off infection

30.

What is the main function of the "Portal of Exit" in the chain of infection?

a)

The way germs enter a new host

b)

The way germs leave the body

c)

The path the germ takes to reach a new person

d)

The place the germ grows and multiplies

31.

Which of the following is an example of a "Reservoir" in the chain of infection?

a)

Coughing

b)

People

c)

Touch

d)

Elderly

32.

A person with a weak immune system is most likely to be which link in the chain of infection?

a)

Infectious Agent

b)

Reservoir

c)

Susceptible Host

d)

Portal of Exit

33.

Which step in the chain of infection involves the path the germ takes to reach a new person?

a)

Portal of Entry

b)

Mode of Transmission

c)

Reservoir

d)

Susceptible Host

34.

If a germ enters a new host through a break in the skin, which part of the chain of infection is this?

a)

Portal of Entry

b)

Portal of Exit

c)

Reservoir

d)

Infectious Agent

35.

A hospital is trying to prevent the spread of infection by sterilizing equipment and isolating sick patients. Which two links in the chain of infection are they primarily targeting?

a)

Infectious Agent and Susceptible Host

b)

Reservoir and Mode of Transmission

c)

Portal of Exit and Portal of Entry

d)

Mode of Transmission and Susceptible Host

36.

What is the correct sequence of the chain of infection starting from the infectious agent?

a)

Infectious Agent → Reservoir → Portal of Exit → Mode of Transmission → Portal of Entry → Susceptible Host

b)

Infectious Agent → Portal of Entry → Reservoir → Mode of Transmission → Portal of Exit → Susceptible Host

c)

Infectious Agent → Susceptible Host → Reservoir → Portal of Exit → Mode of Transmission → Portal of Entry

d)

Infectious Agent → Mode of Transmission → Reservoir → Portal of Exit → Portal of Entry → Susceptible Host

37.

Which component of the chain of infection refers to the place where the infectious agent normally lives and multiplies?

a)

Reservoir

b)

Portal of Exit

c)

Susceptible Host

d)

Mode of Transmission

38.

Which of the following best describes how germs spread through direct contact?

a)

From person to person through touch or bodily fluids

b)

Through the air over long distances

c)

By eating contaminated food

d)

By drinking clean water

39.

What precaution should be taken to prevent the spread of germs by direct contact?

a)

Wearing a mask only

b)

Washing hands with water only

c)

Contact Precautions (gloves + gown)

d)

Avoiding sunlight

40.

Tuberculosis requires which type of isolation?

a)

Contact precautions

b)

Droplet precautions

c)

Airborne precautions with N95 mask

d)

Reverse isolation

41.

Standard Precautions are used—

a)

Only for patients with known infections

b)

For every patient, regardless of infection status

c)

Only in surgical environments

d)

Only when blood is visible

42.

Which PPE is required for Contact Precautions?

a)

Surgical cap and booties

b)

N95 respirator

c)

Mask and face shield

d)

Gloves and gown

43.

Droplet Precautions protect against germs that—

a)

Remain in the air for long periods

b)

Travel short distances through large respiratory droplets

c)

Spread only by contaminated equipment

d)

Require a vector, like a mosquito

44.

When caring for a patient on Droplet Precautions, the technologist must wear—

a)

Gloves only

b)

N95 respirator and gown

c)

Surgical mask and gloves

d)

Face shield only

45.

Which PPE is required for Airborne Precautions?

a)

Gloves only

b)

Surgical mask

c)

N95 respirator

d)

Face shield and gloves

46.

Indirect contact transmission occurs when infection spreads through—

a)

Airborne particles

b)

Insects and animals

c)

Contaminated objects or surfaces

d)

Skin-to-skin contact

47.

Objects such as stethoscopes, bed rails, or X-ray tables that spread infection are called—

a)
fomites
b)
pathogens
c)
contaminants
d)
viruses
48.

Airborne transmission differs from droplet spread because airborne particles—

a)
Airborne particles are smaller and can remain suspended in the air longer than droplets.
b)
Airborne transmission occurs only through direct contact with surfaces.
c)
Droplets can remain suspended in the air longer than airborne particles.
d)
Airborne particles are larger and fall to the ground quickly.
49.

Vector-borne transmission involves—

a)
the transfer of pathogens through a vector such as insects.
b)
the movement of pathogens in water bodies
c)
the transmission of pathogens via air particles
d)
the spread of diseases through direct contact
50.

The term asepsis means—

a)
the process of sterilization
b)
the absence of microorganisms
c)
the presence of harmful bacteria
d)
the use of antiseptics
51.

Medical asepsis is best described as—

a)
the practice of promoting the growth of pathogens
b)
the practice of reducing the number of pathogens to prevent infection
c)
the use of antibiotics to treat infections
d)
the complete elimination of all microorganisms
52.

Surgical asepsis differs from medical asepsis because it—

a)
Surgical asepsis focuses on hand hygiene only.
b)
Medical asepsis requires complete sterilization.
c)
Surgical asepsis is less strict than medical asepsis.
d)
Surgical asepsis involves complete sterilization, whereas medical asepsis involves cleanliness and reduction of pathogens.
53.

A technologist wipes down the X-ray table with an approved chemical after each exam. This is an example of—

a)

Sterilization

b)

Surgical asepsis

c)
equipment maintenance
d)

Disinfection

54.

The main difference between disinfection and sterilization is that sterilization—

a)
Sterilization eliminates all microbial life, while disinfection reduces harmful microorganisms.
b)
Sterilization is a quicker process than disinfection.
c)
Disinfection eliminates all microbial life, while sterilization reduces harmful microorganisms.
d)
Sterilization is only necessary for surgical instruments, while disinfection is for all surfaces.
55.

In the imaging department, medical asepsis is primarily used for—

a)
reducing radiation exposure
b)
preventing infection during imaging procedures
c)
enhancing image quality
d)
improving patient comfort

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