Question 1

How many major groups of microorganisms are there?

Accepted Answer

A) 5 
B) 10 
C) 7 
D) 3 
A) 5 
B) 10 
C) 7 
D) 3 A

Question 2

Which disease is transmitted through a wound or puncture from a soiled instrument and affects the nervous system?

Accepted Answer

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

Question 3

The bacteria found in freshwater and marine habitats and that contain chlorophyll are:

Accepted Answer

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

Question 4

The benchmark for the effectiveness of a surface disinfectant is the "kill time" for:

Accepted Answer

A) West Nile virus. 
B) tetanus. 
C) tuberculosis. 
D) syphilis. 
A) West Nile virus. 
B) tetanus. 
C) tuberculosis. 
D) syphilis.

Question 5

Which of the following diseases is the most serious and presents a high risk to dental personnel since dental treatment brings them into contact with saliva and blood?

Accepted Answer

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

Question 6

The most resistant form of life known is a(n):

Accepted Answer

A) virulent fungus. 
B) capsule. 
C) spore. 
D) anaerobe. 
A) virulent fungus. 
B) capsule. 
C) spore. 
D) anaerobe.

Question 7

It is important for the dental assistant to have a foundation in microbiology in order to:

Accepted Answer

A) understand the nature of pathogens. 
B) cure disease. 
C) know how to prevent disease transmission in the dental office. 
D) both a and c. 
A) understand the nature of pathogens. 
B) cure disease. 
C) know how to prevent disease transmission in the dental office. 
D) both a and c.

Question 8

Dental assistants should be immunized against:

Accepted Answer

A) hepatitis B. 
B) HIV. 
C) tetanus. 
D) both a and c. 
A) hepatitis B. 
B) HIV. 
C) tetanus. 
D) both a and c.

Question 9

Bacteria that require oxygen in order to grow are called:

Accepted Answer

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

Question 10

What is the name of a new and separate class of disease-producing molecules that convert normal protein molecules into dangerous ones?

Accepted Answer

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

Question 11

Which of the following diseases can be prevented via immunization?

Accepted Answer

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

Question 12

The primary cause of mononucleosis and malignancy of the lymph tissues is:

Accepted Answer

A) herpes zoster. 
B) spores. 
C) herpes type 1. 
D) Epstein-Barr virus. 
A) herpes zoster. 
B) spores. 
C) herpes type 1. 
D) Epstein-Barr virus.

Question 13

Which vaccine can protect against chronic HBV infection for a period of at least 15 years?

Accepted Answer

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

Question 14

Bacteria that do not require oxygen in order to grow are called:

Accepted Answer

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

Question 15

Currently all prion diseases found in humans affect the:

Accepted Answer

A) heart. 
B) lungs. 
C) brain. 
D) immune system. 
A) heart. 
B) lungs. 
C) brain. 
D) immune system.

Question 16

Antibiotics are ineffective in treating disease caused by:

Accepted Answer

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

Question 17

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

Accepted Answer

A) Split papules at the corners of the mouth 
B) Hairy 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 out of the scalp 
A) Split papules at the corners of the mouth 
B) Hairy 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 out of the scalp

Question 18

A large group of one-celled organisms that are found in freshwater and marine habitats,and in moist soil,are:

Accepted Answer

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

Question 19

The famous chemist who disproved the theory of spontaneous generation of life associated with living microorganisms and disease was:

Accepted Answer

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

Question 20

Which herpes simplex virus type causes sores on the lips (also known as fever blisters or cold sores)?

Accepted Answer

A) Herpes zoster virus 
B) Herpes simplex type 2 
C) Both a and b 
D) Herpes simplex type 1 
A) Herpes zoster virus 
B) Herpes simplex type 2 
C) Both a and b 
D) Herpes simplex type 1

Exam 18: Microbiology

How many major groups of microorganisms are there?

Which disease is transmitted through a wound or puncture from a soiled instrument and affects the nervous system?

The bacteria found in freshwater and marine habitats and that contain chlorophyll are:

The benchmark for the effectiveness of a surface disinfectant is the "kill time" for:

Which of the following diseases is the most serious and presents a high risk to dental personnel since dental treatment brings them into contact with saliva and blood?

The most resistant form of life known is a(n):

It is important for the dental assistant to have a foundation in microbiology in order to:

Dental assistants should be immunized against:

Bacteria that require oxygen in order to grow are called:

What is the name of a new and separate class of disease-producing molecules that convert normal protein molecules into dangerous ones?

Which of the following diseases can be prevented via immunization?

The primary cause of mononucleosis and malignancy of the lymph tissues is:

Which vaccine can protect against chronic HBV infection for a period of at least 15 years?

Bacteria that do not require oxygen in order to grow are called:

Currently all prion diseases found in humans affect the:

Antibiotics are ineffective in treating disease caused by:

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

A large group of one-celled organisms that are found in freshwater and marine habitats,and in moist soil,are:

The famous chemist who disproved the theory of spontaneous generation of life associated with living microorganisms and disease was:

Which herpes simplex virus type causes sores on the lips (also known as fever blisters or cold sores)?

History of Dentistry

The Professional Dental Assistant

The Dental Healthcare Team

Dental Ethics

Dentistry and the Law

General Anatomy

General Physiology

Oral Embryology and Histology

Head and Neck Anatomy

Landmarks of the Face and Oral Cavity

Overview of the Dentitions

Tooth Morphology

Dental Caries

Periodontal Disease

Preventive Dentistry

Nutrition

Oral Pathology

Disease Transmission and Infection Prevention

Principles and Techniques of Disinfection

Principles and Techniques of Instrument Processing and Sterilization

Regulatory and Advisory Agencies

Chemical and Waste Management

Dental Unit Waterlines

Ergonomics

The Patient Record

Vital Signs

Oral Diagnosis and Treatment Planning

The Special Needs and Medically Compromised Patient

Principles of Pharmacology

Assisting in a Medical Emergency

The Dental Office

Delivering Dental Care

Dental Hand Instruments

Dental Handpieces and Accessories

Moisture Control

Anesthesia and Pain Control

Foundations of Radiography, Radiographic Equipment, and Radiation Safety

Digital Imaging, Dental Film, and Processing Radiographs

Legal Issues, Quality Assurance, and Infection Prevention

Intraoral Imaging

Extraoral Imaging

Restorative and Esthetic Dental Materials

Dental Liners, Bases, and Bonding Systems

Dental Cements

Impression Materials

Laboratory Materials and Procedures

General Dentistry

Matrix Systems for Restorative Dentistry

Fixed Prosthodontics

Provisional Coverage

Removable Prosthodontics

Dental Implants

Endodontics

Periodontics

Oral and Maxillofacial Surgery

Pediatric Dentistry

Coronal Polishing

Dental Sealants

Orthodontics