Question 1

The main function of bacterial fimbriae is to:

Accepted Answer

A) control the exit of wastes from the cell. 
B) protect against crushing. 
C) allow the cell to attach to surfaces. 
D) protect against drying. 
A) control the exit of wastes from the cell. 
B) protect against crushing. 
C) allow the cell to attach to surfaces. 
D) protect against drying.

Question 2

Which of the following bacterial structures helps the cell to attach to surfaces?

Accepted Answer

A) Cell wall 
B) Capsule 
C) Cytoplasmic membrane 
D) Fimbriae 
A) Cell wall 
B) Capsule 
C) Cytoplasmic membrane 
D) Fimbriae

Question 3

Which of the following microbes is a type of fungus?

Accepted Answer

A) Influenzae 
B) Candida albicans 
C) Trichomonas vaginalis 
D) Streptococcus mutans 
A) Influenzae 
B) Candida albicans 
C) Trichomonas vaginalis 
D) Streptococcus mutans

Question 4

_____ acid is the final product from the bacterial fermentation of sugar (e.g., glucose).

Accepted Answer

A) Nucleic 
B) Lactic 
C) Hydrochloric 
D) Pyruvic acid 
A) Nucleic 
B) Lactic 
C) Hydrochloric 
D) Pyruvic acid

Question 5

A yeast is what type of microorganism?

Accepted Answer

A) Bacterium 
B) Fungus 
C) Virus 
D) Protozoan 
A) Bacterium 
B) Fungus 
C) Virus 
D) Protozoan

Question 6

Which of the following diseases is a bacterial disease?

Accepted Answer

A) Influenza 
B) Hepatitis B 
C) Mumps 
D) Dental caries 
A) Influenza 
B) Hepatitis B 
C) Mumps 
D) Dental caries

Question 7

Agents that prevent bacterial growth without killing them are referred to as _____ agents.

Accepted Answer

A) bacteriostatic 
B) sterilant 
C) disinfectant 
D) nucleic acid 
A) bacteriostatic 
B) sterilant 
C) disinfectant 
D) nucleic acid

Question 8

Bacteria are larger than viruses.

Accepted Answer

A) True 
 B)False

Question 9

Unlike bacterial diseases, most viral diseases cannot be successfully treated.

Accepted Answer

A) True 
 B)False

Question 10

Anaerobes are bacteria that:

Accepted Answer

A) require oxygen for growth. 
B) grow only in the absence of oxygen. 
C) can multiply in the presence or absence of oxygen. 
D) are killed in the presence or absence of oxygen. 
A) require oxygen for growth. 
B) grow only in the absence of oxygen. 
C) can multiply in the presence or absence of oxygen. 
D) are killed in the presence or absence of oxygen.

Question 11

Thrush is caused by:

Accepted Answer

A) Candida albicans. 
B) Streptococcus mutans. 
C) Staphylococcus aureus. 
D) human herpesvirus 1. 
A) Candida albicans. 
B) Streptococcus mutans. 
C) Staphylococcus aureus. 
D) human herpesvirus 1.

Question 12

Colony-forming units (CFUs) are defined as:

Accepted Answer

A) measurements of the diameter of colonies that develop on an agar medium. 
B) individual bacterial cells or a small group of cells, each of which can form a colony on agar media. 
C) units used to estimate the distance a bacterial cell can move away from its colony on agar media. 
D) highly resistant forms of certain bacteria. 
A) measurements of the diameter of colonies that develop on an agar medium. 
B) individual bacterial cells or a small group of cells, each of which can form a colony on agar media. 
C) units used to estimate the distance a bacterial cell can move away from its colony on agar media. 
D) highly resistant forms of certain bacteria.

Question 13

Which of the following microbes cannot be killed with antibiotics?

Accepted Answer

A) Streptococcus mutans 
B) Staphylococcus aureus 
C) Human herpes virus type 1 
D) Mycobacterium tuberculosis 
A) Streptococcus mutans 
B) Staphylococcus aureus 
C) Human herpes virus type 1 
D) Mycobacterium tuberculosis

Question 14

Probably the surest way to kill bacteria (or any other type of microorganisms) in the shortest amount of time is to expose them to _____ temperatures.

Accepted Answer

A) sterilizing 
B) freezing 
C) fluctuating 
D) refrigerator 
A) sterilizing 
B) freezing 
C) fluctuating 
D) refrigerator

Question 15

Which of the following substances is a component of some bacterial outer membranes and, when released in the human body, contributes to the causes of periodontal disease?

Accepted Answer

A) Lysozyme 
B) Mesosome 
C) Capsid 
D) Endotoxin 
A) Lysozyme 
B) Mesosome 
C) Capsid 
D) Endotoxin

Question 16

Agar is a polysaccharide from seaweed that is used to:

Accepted Answer

A) kill bacteria. 
B) grow viruses. 
C) kill viruses. 
D) culture bacteria. 
A) kill bacteria. 
B) grow viruses. 
C) kill viruses. 
D) culture bacteria.

Question 17

Which of the following groups of bacteria grow best inside your refrigerator?

Accepted Answer

A) Psychrophiles 
B) Thermophiles 
C) Mesophiles 
D) Acidophils 
A) Psychrophiles 
B) Thermophiles 
C) Mesophiles 
D) Acidophils

Question 18

The genes of a virus are in the:

Accepted Answer

A) capsid. 
B) nucleic acid core. 
C) envelope. 
D) capsid and envelope. 
A) capsid. 
B) nucleic acid core. 
C) envelope. 
D) capsid and envelope.

Question 19

For growth, all bacteria need the proper nutrients, temperature, pH, atmosphere, and _________.

Accepted Answer

The answer of For growth, all bacteria need the proper...

Question 20

Which of the following bacteria can change into special forms that are dormant and are highly resistant to heat, chemicals, and drying?

Accepted Answer

A) Rickettsia 
B) Endospores 
C) Mold 
D) Vegetative cells 
A) Rickettsia 
B) Endospores 
C) Mold 
D) Vegetative cells

Exam 2: Characteristics of Microorganisms

The main function of bacterial fimbriae is to:

Which of the following bacterial structures helps the cell to attach to surfaces?

Which of the following microbes is a type of fungus?

_____ acid is the final product from the bacterial fermentation of sugar (e.g., glucose).

A yeast is what type of microorganism?

Which of the following diseases is a bacterial disease?

Agents that prevent bacterial growth without killing them are referred to as _____ agents.

Bacteria are larger than viruses.

Unlike bacterial diseases, most viral diseases cannot be successfully treated.

Anaerobes are bacteria that:

Thrush is caused by:

Colony-forming units (CFUs) are defined as:

Which of the following microbes cannot be killed with antibiotics?

Probably the surest way to kill bacteria (or any other type of microorganisms) in the shortest amount of time is to expose them to _____ temperatures.

Which of the following substances is a component of some bacterial outer membranes and, when released in the human body, contributes to the causes of periodontal disease?

Agar is a polysaccharide from seaweed that is used to:

Which of the following groups of bacteria grow best inside your refrigerator?

The genes of a virus are in the:

For growth, all bacteria need the proper nutrients, temperature, pH, atmosphere, and _________.

Which of the following bacteria can change into special forms that are dormant and are highly resistant to heat, chemicals, and drying?

Scope of Microbiology and Infection Control

Development of Infectious Diseases

Emerging Diseases

Oral Microbiology and Plaque-Associated Diseases

Bloodborne Pathogens

Oral and Respiratory Diseases

Infection Control Rationale and Regulations

Immunization

Hand Hygiene

Personal Protective Equipment

Instrument Processing

Surface and Equipment Asepsis

Dental Unit Water Asepsis and Air Quality

Aseptic Techniques

Laboratory and Radiographic Asepsis

Waste Management

Preventing Sharps Injuries

A Clinical Asepsis Protocol

General Office Safety and Asepsis

Greener Infection Control

Cross-Contamination Between Work and Home

About the Occupational Safety and Health Administration

Osha Inspections

Management of the Office Safety Program

Managing Chemicals Safely

Employee Fire Prevention and Emergency Action Plans

Infection Control Concerns During Remodeling or Construction

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