Question 1

A new infectious agent has been isolated from deer ticks. It lacks a cell wall but has 70S ribosomes. This agent is most likely a

Accepted Answer

A)  Bacterium 
B) Chlamydia species 
C) Mycoplasma species 
D) Rickettsia species 
E) Virus 
A)  Bacterium 
B) Chlamydia species 
C) Mycoplasma species 
D) Rickettsia species 
E) Virus C

Question 2

Quaternary ammonium compounds inactivate bacteria because they

Accepted Answer

A)  Alter metabolic properties of membranes 
B) Bind irreversibly to DNA 
C) Denature proteins 
D) Inactivate 50S ribosomes 
E) Oxidize free sulfhydryl groups 
A)  Alter metabolic properties of membranes 
B) Bind irreversibly to DNA 
C) Denature proteins 
D) Inactivate 50S ribosomes 
E) Oxidize free sulfhydryl groups A

Question 3

The infectious agent associated with Creutzfeldt-Jakob disease is extremely hardy, but can be inactivated by

Accepted Answer

A)  Catalases 
B) Hyaluronidases 
C) Nucleases 
D) Phospholipases 
E) Proteases 
A)  Catalases 
B) Hyaluronidases 
C) Nucleases 
D) Phospholipases 
E) Proteases E

Question 4

The minimal concentration of alcohol necessary to kill bacteria and enveloped viruses is

Accepted Answer

A)  30% 
B) 40% 
C) 50% 
D) 60% 
E) 70% 
A)  30% 
B) 40% 
C) 50% 
D) 60% 
E) 70%

Question 5

A pharmaceutical company has developed a new compound that is well tolerated by the body and inhibits the sterol ergosterol synthesis. Screening of anti-infectious agent activity should be directed toward

Accepted Answer

A)  Bacteria 
B) Chlamydia species 
C) Fungi 
D) Rickettsia species 
E) Viruses 
A)  Bacteria 
B) Chlamydia species 
C) Fungi 
D) Rickettsia species 
E) Viruses

Question 6

Dimorphism is a characteristic of

Accepted Answer

A)  Bacteria 
B) Fungi 
C) Prions 
D) Rickettsia species 
E) Viruses 
A)  Bacteria 
B) Fungi 
C) Prions 
D) Rickettsia species 
E) Viruses

Question 7

The normal flora of the large intestine consists mainly of

Accepted Answer

A)  Bacteria 
B) Fungi 
C) Protozoa 
D) Viruses 
E) No microbial agents 
A)  Bacteria 
B) Fungi 
C) Protozoa 
D) Viruses 
E) No microbial agents

Question 8

50S ribosomal subunits are found in

Accepted Answer

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

Question 9

Human obligate intracellular pathogens that depend on the host cell for ATP production are

Accepted Answer

A)  Bacteriophages 
B) Mycoplasma species 
C) Prions 
D) Rickettsia species 
E) Viroids 
A)  Bacteriophages 
B) Mycoplasma species 
C) Prions 
D) Rickettsia species 
E) Viroids

A new infectious agent has been isolated from deer ticks. It lacks a cell wall but has 70S ribosomes. This agent is most likely a

Quaternary ammonium compounds inactivate bacteria because they

The infectious agent associated with Creutzfeldt-Jakob disease is extremely hardy, but can be inactivated by

The minimal concentration of alcohol necessary to kill bacteria and enveloped viruses is

A pharmaceutical company has developed a new compound that is well tolerated by the body and inhibits the sterol ergosterol synthesis. Screening of anti-infectious agent activity should be directed toward

Dimorphism is a characteristic of

The normal flora of the large intestine consists mainly of

50S ribosomal subunits are found in

Human obligate intracellular pathogens that depend on the host cell for ATP production are

Bacteria

Important Bacterial Genera

Bacterial Diseases

Viruses

System-Based and Situational Viral Infections

Fungal Diseases

Parasitic Diseases

Clues for Distinguishing Causative Infectious Agents Systems Approach

Immunology

Travelers Diarrhea: Identifying the Causative Agent

Filters

Exam 1: General Properties of Microorganisms

A new infectious agent has been isolated from deer ticks. It lacks a cell wall but has 70S ribosomes. This agent is most likely a

Quaternary ammonium compounds inactivate bacteria because they

The infectious agent associated with Creutzfeldt-Jakob disease is extremely hardy, but can be inactivated by

The minimal concentration of alcohol necessary to kill bacteria and enveloped viruses is

A pharmaceutical company has developed a new compound that is well tolerated by the body and inhibits the sterol ergosterol synthesis. Screening of anti-infectious agent activity should be directed toward

Dimorphism is a characteristic of

The normal flora of the large intestine consists mainly of

50S ribosomal subunits are found in

Human obligate intracellular pathogens that depend on the host cell for ATP production are

Bacteria

Important Bacterial Genera

Bacterial Diseases

Viruses

System-Based and Situational Viral Infections

Fungal Diseases

Parasitic Diseases

Clues for Distinguishing Causative Infectious Agents Systems Approach

Immunology

Travelers Diarrhea: Identifying the Causative Agent

Filters