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PHPS 722 Test #1 (2007)
Terms in this set (43)
___________ is a chronic lower respiratory tract infection.
B) Respiratory syncitial virus infection
Streptococcus pyogenes is a common etiological agent of all of the following except
C) otitis media
Which of the following is not a characteristic of bacterial exotoxins?
A) They are the metabolic product of growing cells.
B) They are mostly associated with gram-positive bacteria.
C) They are highly toxic.
D) They cause general effects such as fever, myalgia, and lethargy.
C) They are highly toxic.
The transfer of genetic material from one bacterium to another via a bacteriophage is called
Which of the following is a typical cause of an endogenous infection?
A) Staphylococcus aureus
B) Salmonella enterica
C) Streptococcus pneumoniae
D) Aspergillus fumigatus.
A) Staphylococcus aureus
What is the family name for: Rhinovirus?
What is the family name for: mumps virus?
What is the family name for: influenza virus?
What is the family name for: cytomegalovirus?
What is the nomenclature associated with: Streptococcus pyogenes?
Gram + coccus, facultative anaerobe
What is the nomenclature associated with Campylobacter jejuni?
Gram - bacillus, microaerophile
What is the nomenclature associated with Vibrio cholerae?
Gram - bacillus, facultative anaerobe
What is the nomenclature associated with Clostridium botulinum?
Gram + bacillus, anaerobe
What type of pathogen causes: giardiasis?
What type of pathogen causes: botulism?
What type of pathogen causes; aspergillosis?
What type of pathogen causes parotiditis?
TRUE or FALSE: Rhinoviruses are the most common cause of the common cold.
TRUE or FALSE: Viruses are obligate intracellular microparasites.
TRUE or FALSE: N spikes of the influenza virus allow viral recognition and attachment to host cells.
TRUE or FALSE: The feeding stage of Entamoeba histolytica is able to exit the cyst because gastric acids destroy the cyst.
TRUE or FALSE: In infectious mononucleosis, the Epstein-Barr virus invades and replicates within lymphocytes.
Enterotoxigenic Escherichia coli is a (gram-positive microaerophilic bacillus, gram-negative facultative anaerobic bacillus,) and infections are typically (systemic, confined to the gastrointestinal tract).
gram-negative facultative anaerobic bacillus; confined to the gastrointestinal tract
Gram-positive cell walls are structurally (more, less) complex than gram-negative cell walls and gram-positive bacteria are (sensitive, resistant) to lysozyme.
(Hepatoviruses, Rotaviruses) are very common causes of infantile diarrhea and they work by (damaging transport mechanisms in the intestines, blocking neuromuscular synapses.)
Gastroenteritis is the inflammation of the epithelial lining of the _____________________________.
stomach and intestines
Arthropod vectors directly cause diseases by feeding on the blood or tissues or hosts or indirectly by _________________________.
transmitting pathogenic microbes
A mass of fungal ______________ is called a mycelium.
Viral DNA or RNA with its surrounding capsule (capsid) is called a ______________________.
Protozoans can be transmitted by the ingestion of cysts in food or water, sexual contact, and by _____________________.
Gastric ulcers are caused by____________________.
List two strategies for success displayed by mycobacterium tuberculosis.
1. formation of tuburcle
2. waxy coat formation
a disease characterized by frequent watery stools containing blood and mucus.
infections with organisms like Enteroinvasive E. coli and Campylobacter jejuni may result in severe dysentery. Why?/
infection enters the cell via endocytic vesicles, lives and replicates in the vesicles, they can enter phagocytic cells and causes systemic damage to the epitielial cells of the gi tract.
Influenza is considered a lytic infection. What does this mean?
It destroys (lyses) the cells it infects
Why is cystic fibrosis considered a genetic disorder?
it is causes by genetic traits that are passed down
Why is cystic fibrosis called a respiratory disorder?
pathogens live/breed in the excess mucus
Name a bacterium that commonly becomes pathogenic to patients of CF.
You have discovered a new spherical bacterium that gram stains a vivid purple and is unable to survive in oxygen. How would you classify this organism?
Gram-positive coccus, anaerobe
You have decided to name this (Gram-positive coccus, anaerobe) bacterium after yourself. What would you name this bacterium?
You have a patient with severe bacterial dysentery and you suspect Campylobacter jejuni, Escherichia coli, Vibrio cholerae, or Shigella sp. You are able to isolate a gram-negative non-motile bacillus. Which is it?
You have a patient with severe bacterial dysentery and you suspect Campylobacter jejuni, Escherichia coli, Vibrio cholerae, or Shigella sp. You are able to isolate a gram-negative non-motile bacillus.
How likely is it that this pathogen will invade the bloodstream?
not likely, it rarely invades the bloodstream
AIDS, acute respiratory infections, and measles are three of the top seven leading causes of death due to infectious diseases worldwide. Identify two more.
4. hepatitis B
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