Question 1

Some bacteria grow at 25° C or 42° C, but diagnostic laboratories routinely grow pathogenic bacteria at what temperature?

Accepted Answer

A) 30° C 
B) 60° C 
C) 35° C 
D) 10° C 
A) 30° C 
B) 60° C 
C) 35° C 
D) 10° C

Question 2

What structure is a phospholipid bilayer embedded with proteins and sterols that regulates the type and amount of chemicals that pass in and out of a cell?

Accepted Answer

A) Cell wall 
B) Mitochondria 
C) Endoplasmic reticulum 
D) Plasma membrane 
A) Cell wall 
B) Mitochondria 
C) Endoplasmic reticulum 
D) Plasma membrane

Question 3

In the laboratory, the clinical microbiologist is responsible for all the following except:

Accepted Answer

A) isolating microorganisms. 
B) selecting treatment for patients. 
C) identifying microorganisms. 
D) analyzing bacteria that cause disease. 
A) isolating microorganisms. 
B) selecting treatment for patients. 
C) identifying microorganisms. 
D) analyzing bacteria that cause disease.

Question 4

Diphtheria is a disease produced by Corynebacterium diphtheriae.However, not all C.diphtheriae bacteria produce the toxin that causes this disease.To produce the toxin, the bacteria must first become infected with a bacteriophage.The process by which bacterial genes are transferred to new bacteria by the bacteriophage is called:

Accepted Answer

A) conjugation. 
B) transduction. 
C) replication. 
D) transformation. 
A) conjugation. 
B) transduction. 
C) replication. 
D) transformation.

Question 5

The three regions of the lipopolysaccharide include all the following except:

Accepted Answer

A) antigenic O-specific polysaccharide. 
B) mycolic acid. 
C) core polysaccharide. 
D) endotoxin (inner lipid 
A) . 
A) antigenic O-specific polysaccharide. 
B) mycolic acid. 
C) core polysaccharide. 
D) endotoxin (inner lipid 
A) .

Question 6

The Gram stain is a routine stain used in bacteriology to determine gram-positive and gram-negative bacteria based on the:

Accepted Answer

A) phenotypic characteristics of the organism. 
B) composition of the bacterial cell wall. 
C) composition of the bacterial cell membrane. 
D) composition of the bacterial pili. 
A) phenotypic characteristics of the organism. 
B) composition of the bacterial cell wall. 
C) composition of the bacterial cell membrane. 
D) composition of the bacterial pili.

Question 7

What enables the microbiologist to select the correct media for primary culture and optimize the chance of isolating a pathogenic organism?

Accepted Answer

A) Determining staining characteristics 
B) Understanding the cell structure and biochemical pathways of an organism 
C) Understanding the growth requirements of potential pathogens for the body site 
D) Knowing the differences in cell walls of particular bacteria 
A) Determining staining characteristics 
B) Understanding the cell structure and biochemical pathways of an organism 
C) Understanding the growth requirements of potential pathogens for the body site 
D) Knowing the differences in cell walls of particular bacteria

Question 8

The nuclear membrane in prokaryotes is:

Accepted Answer

A) missing. 
B) impenetrable. 
C) a classic membrane. 
D) a lipid bilayer membrane. 
A) missing. 
B) impenetrable. 
C) a classic membrane. 
D) a lipid bilayer membrane.

Exam 1: Bacterial Cell Structure, Physiology, Metabolism, and Genetics

Some bacteria grow at 25° C or 42° C, but diagnostic laboratories routinely grow pathogenic bacteria at what temperature?

What structure is a phospholipid bilayer embedded with proteins and sterols that regulates the type and amount of chemicals that pass in and out of a cell?

In the laboratory, the clinical microbiologist is responsible for all the following except:

The three regions of the lipopolysaccharide include all the following except:

The Gram stain is a routine stain used in bacteriology to determine gram-positive and gram-negative bacteria based on the:

What enables the microbiologist to select the correct media for primary culture and optimize the chance of isolating a pathogenic organism?

The nuclear membrane in prokaryotes is:

Host-Parasite 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

Antimicrobial Susceptibility Testing

Staphylococci

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

Aerobic Gram-Positive Bacilli

Neisseria Species and Moraxella Catarrhalis

Haemophilus and Other Fastidious Gram-Negative Bacilli

Enterobacteriaceae

Vibrio, Aeromonas, Plesiomonas, 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

Biofilms: Architects of Disease

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 Diseases

Infections in Special Populations

Zoonotic Diseases

Ocular Infections

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