Microbiology (All subtopics) Flashcards
Which of the following is the largest animal virus?
a.arterivirus
b.poxvirus
c.adenovirus
d.birnavirus
Poxvirus
Which is not a characteristic of Mycoplasma?
a.Fried egg” appearance of colonies
b.Lacks a cell wall
c.Contain DNA and RNA
d.Possess peptidoglycan
Possess peptidoglycan
You get called upon to assist in an outbreak investigation in a neighbouring district. Several duck farmers in the district have reported significant mortalities of ducks in their flocks. All ducks are unvaccinated and affected ducks do not show any clear clinical signs. You are tasked to visit one affected farm later today, interview the farmer and take samples of the flock. What would be the appropriate level of PPE while handling affected ducks during this farm visit?
a.Nothing, this investigation has just started, and no disease has been confirmed yet.
b.Cleaned gumboots to avoid spreading disease to this flock.
c.Overalls, gumboots, gloves, goggles, disposable N95 mask as there is a potential zoonotic infection risk.
d.Totally encapsulated suit with self-contained breathing apparatus to eliminate any risk.
Overalls, gumboots, gloves, goggles, disposable N95 mask as there is a potential zoonotic infection risk
This disease is an example of an occupational hazard:
a.Erysipeloid
b.West Nile Fever
c.Hantavirus Pulmonary Syndrome
d.Leptospirosis
Erysipeloid
The mechanism of action of the botulinum toxin is to:
a.Block the release of inhibitory mediator
b.Stimulate the release of prostaglandin from epithelial cells
c.Block protein synthesis by ADP ribosylating EF-2
d.Activate host cell adenylate cyclase
Block protein synthesis by ADP ribosylating EF-2
In assessing titer, how long after the first serum sample is collected should the second sample be collected?
a.7 days
b.3 days
c.2-6 weeks
d.14 weeks
2-6 weeks
General term for fungi that can occur in both mold and yeast form.
a.bisexual
b.dimorphic
c.haustoria
d.rhizoids
Dimorphic
Based on the replication of Togaviruses, the virus will replicate in the:*
a.nucleus
b.cytoplasm
c.it can happen on both sites
d.location outside the living cell
Cytoplasm
In a integrated farm, an outbreak of Tetanus has been reported. Which among the following animals will be mostly affected?
a.goat
b.horse
c.chicken
d.cattle
Horse
What is the primary toxin responsiblefor Paralytic Shellfish Poisoning (PSP)?
*
1/1
a.Saxitoxin
b.Tetrodotoxin
c.Ciguatoxin
d.Domoic acid
Saxitoxin
The most commonly used agent for gas sterilization is:
a.Glutaraldehyde
b.Formaldehyde
c.Chlorhexidine
d.Ethylene oxide
Ethylene oxide
Which is an intracellular organism that occurs outside of the host cell as elementary bodies?
a.Mycobacterium avium
b.Aspergillus fumigatus
c.Pseudomonas aeruginosa
d.Chlamydia psittaci
Chlamydia psittaci
Period of bacterial growth when there is rapid multiplication of cells?
a.lag phase
b.log phase
c.stationary phase
d.period of decline
Log phase
IL-1 is produced mainly by what cells?
a.NK cells
b.macrophage
c.CD4 T cells
d.Th1 cells
Macrophage
What is the cause of blue ear disease?
a.arterivirus
b.poxvirus
c.adenovirus
d.birnavirus
Arterivirus
The epidemiologic triad of disease causation refers to:
a.Agent, host, environment
b.Time, place, person
c.Source, mode of transmission, susceptible host
d.John Snow, Robert Koch, Kenneth Rothman
Agent, host, environment
The diarrhea and dehydration seen in calves with colibacillosis are mainly attributable to the effects of:
a.Enterotoxin
b.Endotoxin
c.Verotoxin
d.Lipopolysaccharide
Enterotoxin
A reservoir of an infectious agent can be:
a.A symptomatic human
b.An animal
c.The environment
d.All of the above
All of the above
Which of the following diseases is caused by gram positive bacteria?
a.Purulent pneumonia in foals
b.Tracheobronchitis in dogs
c.Tularemia
d.Fowl coryza
Tracheobronchitis in dogs
During milk ring test, what is the indication if the milk at the bottom of the tube becomes gradually whitened?
a.positive result
b.negative result
c.result is inconclusive and the test should be repeated
d.partially negative
Result is inconclusive and the test should be repeated
Transmissible gastroenteritis virus cross-reacts serologically with:
a.Pseudorabies virus
b.Hog cholera virus
c.Bovine viral diarrhea virus
d.Porcine corona respiratory virus
Porcine corona respiratory virus
Which of the following vaccutainer can be used in the collection of your sample for antibody detection?
a.the one with green cap
b.the one with purple cap
c.the one with red cap
d.the one with yellow cap
The one with red cap
Which of the following is the transmitter of Hendra virus?
a.dogs
b.bats
c.guinea pig
d.firefly
Bats
Which bacteria is associated with Hamburger Disease is US?
a.Brucella foetus
b.Escherichia coli
c.Vibrio cholera
d.Staphylococcus aureus
Escherichia coli
Double-deadis a Filipino appellation of meat obtained from a diseased animal or of an animal which has died other than slaughter. The Meat Inspection Code properly refers to this as:
a.Adulterated
b.Hot meat
c.Condemned
d.Misbranded
Adulterated
Population of the city of Atlantis on March 30, 2012 = 183,000
No. of new active cases of TB occurring between January 1 and June 30, 2012 = 26
No. of active TB cases according to the city register on June 30, 2012 = 264
The incidence rate of active cases of TB for the 6-month period was ______ per 100,000 population.
a.7
b.14
c.26
d.28
14
A cohort study differs from a case-control study in that:
a.Subjects are enrolled or categorized on the basis of their exposure status in a cohort study but not in a case-control study
b.Subjects are asked about their exposure status in a cohort study but not in a case-control study
c.Cohort studies require many years to conduct, but case-control studies do not
d.Cohort studies are conducted to investigate chronic diseases, case-control studies are used for infectious diseases
Subjects are enrolled or categorized on the basis of their exposure status in a cohort study but not in a case-control study
What is the major antibody produced during a primary response?
a.IgA
b.IgG
c.IgM
d.IgD
IgM
Touching or feeding animals and licks on the skin is an example of what type of contact to rabies virus?
a.Type I
b.Type II
c.Type III
d.Type IV
Type I
What is the causative agent of Wooden tongue in cattle?
a.Actinobacillus lignieresii
b.Nocardia asteroids
c.Dermatophilus congolensis
d.Moraxella bovis
Actinobacillus lignieresii
Which of the following bacteria are capable of producing motile zoospores?
a.Actinomyces
b.Brucella
c.Dermatophilus
d.Corynebacterium
Dermatophilus
During an ante-mortem inspection at a slaughterhouse, which scenario is most likely to be a significant concern that warrants further investigation?
a.A cow with a slightly abnormal posture but normal appetite and alert behavior.
b.A pig showing signs of moderate respiratory distress, accompanied by high fever and visible skin lesions.
c.A goat with a minor but persistent limp and normal feeding behavior.
d.A chicken with extensive external abscesses visible on the carcass
A pig showing signs of moderate respiratory distress, accompanied by high fever and visible skin lesions
False negative tuberculin tests may occur in:
a.Heavily parasitized cattle
b.Heavily pregnant cows
c.Very old cattle
d.Jersey cattle
Heavily pregnant cattle
An acidic reaction in the slant and butt portions of a triple sugar-iron medium indicates:
a.Fermentation
b.Carbohydrate utilization
c.Deamination
d.Desulfurylation
Fermentation
Which of the following yeasts become concentrated in pigeon feces that are rich in creatinine?
a.Candida albicans
b.Cryptococcus neoformans
c.Malassezia pachydermatis
d.Histoplasma capsulatum
Cryptococcus neoformans
Which of the following is most suitable for sterilization of an antiserum?
a.Irradiation
b.Steam sterilization
c.Filtration
d.Dry heat
Filtration
Primaryreservoirof Q fever:
a.Birds
b.Cattle, sheep, and goats
c.Contaminated water; rodents
d.Wild carnivores
Cattle, sheep, and goats
Prevalence measures the 1)_______ of cases within a 2)_______-at-risk at a specified 3)______ in time.
a.1) number 2) group 3) point
b.1) proportion 2) population 3) date
c.1) proportion 2) population 3) point
d.1) proportion 2) group 3) date
1) proportion 2) population 3) point
Which of the following is the major immunoglobulin found in the pig’s body surfaces?
a.IgA
b.IgG1
c.IgM
d.IgD
IgA
Abortion in cow can be suspected to be cause by Brucella spp if it occurs ___?
a.on the first month
b.on the third month
c.on the fourth month
d.on the seventh month
On the seventh month