Question 1

Treating infectious diseases has shifted from planktonic susceptibility profiles to

Accepted Answer

A)  therapeutic modalities. 
B)  creative treatments. 
C)  multiple interventions. 
D)  degrading enzymes. 
A)  therapeutic modalities. 
B)  creative treatments. 
C)  multiple interventions. 
D)  degrading enzymes.

Question 2

All of the following organisms are very efficient at converting from planktonic to biofilm biotypes when environmental stresses hit, except

Accepted Answer

A)  coagulase-negative staphylococci. 
B)  Pseudomonas aeruginosa. 
C)  Micrococcus luteus. 
D)  Candida albicans. 
A)  coagulase-negative staphylococci. 
B)  Pseudomonas aeruginosa. 
C)  Micrococcus luteus. 
D)  Candida albicans.

Question 3

What is stage V of biofilm development?

Accepted Answer

A)  Stationary phase 
B)  Multiplication phase 
C)  Cell dispersion 
D)  Layering phase 
A)  Stationary phase 
B)  Multiplication phase 
C)  Cell dispersion 
D)  Layering phase

Question 4

This layer of a biofilm is exposed to the highest concentration of nutrients and oxygen, containing the most active organisms. What layer is this?

Accepted Answer

A)  Outer 
B)  Inner 
C)  Middle 
D)  Substrata 
A)  Outer 
B)  Inner 
C)  Middle 
D)  Substrata

Question 5

What is a biofilm?

Accepted Answer

A)  Community of organisms attached to a solid surface 
B)  The resulting thick, slimy mucous produced in patients with cystic fibrosis 
C)  A slime factor that can be found in the gastrointestinal tract 
D)  The resulting film that is produced by necrotic tissue, bacteria, and immune cells 
A)  Community of organisms attached to a solid surface 
B)  The resulting thick, slimy mucous produced in patients with cystic fibrosis 
C)  A slime factor that can be found in the gastrointestinal tract 
D)  The resulting film that is produced by necrotic tissue, bacteria, and immune cells

Question 6

What do biofilms allow members of the microbial community to do?

Accepted Answer

A)  Withstand the shear forces of blood and urine 
B)  Remain in a nutrient rich environment 
C)  Survive 
D)  All of the above 
A)  Withstand the shear forces of blood and urine 
B)  Remain in a nutrient rich environment 
C)  Survive 
D)  All of the above

Question 7

The late colonizers in the dental biofilm include all the following, except

Accepted Answer

A)  Capnocytophaga. 
B)  Streptococcus salivarius. 
C)  Selenomonas flueggei. 
D)  Prevotella spp. 
A)  Capnocytophaga. 
B)  Streptococcus salivarius. 
C)  Selenomonas flueggei. 
D)  Prevotella spp.

Exam 31: Biofilms: Architects of Disease

Treating infectious diseases has shifted from planktonic susceptibility profiles to

All of the following organisms are very efficient at converting from planktonic to biofilm biotypes when environmental stresses hit, except

What is stage V of biofilm development?

This layer of a biofilm is exposed to the highest concentration of nutrients and oxygen, containing the most active organisms. What layer is this?

What is a biofilm?

What do biofilms allow members of the microbial community to do?

The late colonizers in the dental biofilm include all the following, except

Bacterial Cell Structure, Physiology, Metabolism, and Genetics

Hostparasite Interaction

The Laboratory Role in Infection Control

Control of Microorganisms

Performance Improvement in the Microbiology Laboratory

Specimen Collection and Processing

Microscopic Examination of Materials From Infected Sites

Use of Colony Morphology for the Presumptive Identification of Microorganisms

Biochemical Identification of Gram-Negative Bacteria

Immunodiagnosis of Infectious Diseases

Applications of Molecular Diagnostics

Antimicrobial Agent Mechanisms of Action and Resistance Mechanisms

Antimicrobial Susceptibility Testing

Staphylococci

Streptococcus, Enterococcus, and Other Catalase-Negative, Gram-Positive Cocci

Aerobic Gram-Positive Bacilli

Neisseria Species and Moraxella Catarrhalis

Haemophilus, Hacek, Legionella, and Other Fastidious Gram-Negative Bacilli

Enterobacteriaceae

Vibrio, Aeromonas, and Campylobacter Species

Nonfermenting and Miscellaneous Gram-Negative Bacilli

Anaerobes of Clinical Importance

The Spirochetes

Chlamydia, Rickettsia, and Similar Organisms

Mycoplasma and Ureaplasma

Mycobacterium Tuberculosis and Nontuberculous Mycobacteria

Medically Significant Fungi

Diagnostic Parasitology

Clinical Virology

Agents of Bioterror and Forensic Microbiology

Upper and Lower Respiratory Tract Infections

Skin and Soft Tissue Infections

Gastrointestinal Infections and Food Poisoning

Infections of the Central Nervous System

Bacteremia and Sepsis

Urinary Tract Infections

Genital Infections and Sexually Transmitted Infections

Infections in Special Populations

Zoonotic Diseases

Ocular Infections

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