Deck 18: Microbiology

Question 1

Which of the following diseases infects T cells?

A)HIV
B)Tuberculosis
C)Tetanus
D)Syphilis

Answer 1

HIV

Question 2

What is the name of a new and separate class of disease-producing molecules that are composed of proteins that lack nucleic acids?

A)Prions
B)Scrapie
C)DNA/RNA
D)Algae

Answer 2

Prions

Question 3

Which is the smallest of the major groups of microorganisms?

A)Bacteria
B)Protozoa
C)Fungi
D)Viruses

Answer 3

Viruses

Question 4

Kill time for which of the following infectious agents is the benchmark for the effectiveness of a surface disinfectant?

A)West Nile virus
B)Tetanus
C)Tuberculosis
D)Syphilis

Question 5

Dental assistants should be immunized against which of the following viral infections?

A)Hepatitis B
B)Hepatitis C
C)Tetanus
D)Tuberculosis

Question 6

Oral candidiasis is an opportunistic infection caused by:

A)fungi.
B)bacteria.
C)protozoa.
D)rickettsiae.

Question 7

Which of the following is a group of one-celled organisms that do not have a rigid cell wall?

A)Algae
B)Protozoa
C)Fungi
D)Rickettsiae

Question 8

Which of the following is the most resistant form of life known?

A)Virulent fungus
B)Capsule
C)Spore
D)Anaerobe

Question 9

Which of the following is the correct term used to describe microorganisms that produce disease in humans?

A)Pandemic
B)Pathogen
C)Percutaneous
D)Germ

Question 10

Which of the following types of bacteria have a spiral shape?

A)Cocci
B)Diplococci
C)Bacilli
D)Spirochetes

Question 11

Which of the following is not a dental sign of second-stage infectious syphilis?

A)Split papules at the corners of the mouth
B)Geographic tongue
C)Grayish-white, moist, "mucous patches" on the tongue, roof of the mouth, tonsils, or inner surfaces of the lips
D)Generalized measles-type rash, poxlike pustules, oozing sores, and hair falling from the scalp

Question 12

Which of the following diseases is the leading cause of death worldwide?

A)Legionnaires' disease
B)HIV
C)Tetanus
D)Tuberculosis

Question 13

What type of microorganisms are known as obligate intracellular parasites,meaning that they can live and multiply only inside an appropriate host cell?

A)Bacteria
B)Viruses
C)Protozoa
D)Algae
E)Fungi

Question 14

Bacteria that grow in the absence of oxygen are called:

A)aerobes.
B)anaerobes.
C)spores.
D)gram-negative.

Question 15

Human prion diseases affect which of the following tissues?

A)Heart
B)Lungs
C)Brain
D)Liver

Question 16

Which of the following forms of hepatitis is spread through fecal-oral contamination?

A)Hepatitis A
B)Hepatitis B
C)Hepatitis C
D)Hepatitis D

Question 17

It is important for the dental assistant to have a foundation in microbiology to understand the nature of pathogens and to:

A)treat viral diseases, such as human immunodeficiency virus.
B)treat bacterial diseases, such as tuberculosis.
C)know how to prevent disease transmission in the dental office.
D)cure diseases.

Question 18

General antibiotics are ineffective in preventing or curtailing:

A)bacteria.
B)spores.
C)anaerobes.
D)viral infections.

Question 19

HIV infects cells known as CD4 cells,and hepatitis virus infects only liver cells because of:

A)diversity.
B)latency.
C)specificity.
D)singularity.

Question 20

Chemicals such as chlorine (bleach),iodine,phenol,and formaldehyde are:

A)unable to destroy viruses on surfaces coming into contact with infected patients.
B)unable to destroy viruses on objects coming into contact with infected patients.
C)able to destroy viruses in the external environment.
D)used internally as effective antiviral medications.

Question 21

Which of the following was an English surgeon who recognized the role of airborne microorganisms in postsurgical infections?

A)Louis Pasteur
B)Aristotle
C)Robert Koch
D)Joseph Lister

Question 22

Which of the following diseases can be prevented by immunization?

A)Hepatitis B
B)Hepatitis C
C)Hepatitis D
D)Hepatitis E

Question 23

Which herpes simplex virus type causes Burkitt lymphoma?

A)Herpes simplex type 1 (HSV 1)
B)Herpes simplex type 2 (HSV 2)
C)Herpes varicella-zoster virus (HZV)
D)Epstein-Barr virus (EBV)

Question 24

______ is the study of microorganisms.

A)Anatomy
B)Microbiology
C)Antiseptic
D)Disinfectant

Question 25

_______ is the study of viruses and their effects.

A)Diversity
B)Latency
C)Virology
D)Singularity

Question 26

Which of the following types of bacteria have a rodlike shape?

A)Cocci
B)Gram-positive bacteria
C)Bacilli
D)Spirochetes

Question 27

Which of the following types of microorganisms contain chlorophyll?

A)Protozoa
B)Algae
C)Fungi
D)Rickettsiae

Question 28

Bacteria that do require oxygen in order to grow are called:

A)anaerobes.
B)aerobes.
C)spores.
D)gram-negative.

Question 29

Which of the following diseases is commonly known as lockjaw?

A)Legionnaires' disease
B)Syphilis
C)Tuberculosis
D)Tetanus

Question 30

Which type of microorganism causes chickenpox,shingles,measles,and herpes?

A)Hepatitis A
B)Hepatitis B
C)Human immunodeficiency virus (HIV)
D)Herpesvirus

Question 31

A viral disease cannot be transmitted through:

A)direct contact and blood transfusion.
B)insects and contaminated food or water.
C)coughing or sneezing.
D)radiation.

Question 32

Which disease is caused by a spore-forming bacillus found in soil?

A)HIV
B)Tuberculosis
C)Tetanus
D)Syphilis

Question 33

Which of the following types of microorganisms do not produce human diseases?

A)Virus
B)Nonpathogenic
C)Pasteurized
D)Germ

Question 34

Which chemicals are capable of destroying viruses in an external environment?

A)Chlorine (bleach)
B)Alcohol
C)Soap
D)Ammonia

Question 35

Which of the following diseases is spread through sexual contact with an infected person and by needle sharing among drug users?

A)Legionnaires' disease
B)HIV
C)Tetanus
D)Tuberculosis

Question 36

Which of the following diseases presents the highest risk to dental personnel?

A)Hepatitis A
B)Hepatitis B
C)Hepatitis C
D)Hepatitis D

Question 37

A provirus is found when a virus establishes a(n)______ state in a host cell.

A)latent
B)specific
C)virulent
D)active

Question 38

Which of the following types of bacteria normally live in the intestinal tract of insects?

A)Tuberculosis
B)Tetanus
C)Rickettsiae
D)Actinomyces israelii

Question 39

Which of the following types of viruses causes chickenpox?

A)Herpes zoster
B)Spores
C)Herpes type 1
D)Epstein-Barr virus

Question 40

_______ is responsible for 34% of all types of acute viral hepatitis.

A)HIV
B)Hepatitis A
C)HBV
D)Herpesvirus