Set 2.3 (General and oral microbiology) Flashcards
(25 cards)
Which of the following components is present in Gram-negative bacteria but not in Gram-positive bacteria?
a. Peptidoglycan
b. Lipid A
c. Capsule
d. Flagella
b. Lipid A
What is chemotaxis?
a. The movement of a bacterium in response
to a chemical stimulus
b. The use of an inorganic chemical as a source
of energy
c. An increase in the internal osmolarity of a
cell
d. The form of energy that powers the
bacterial flagellum
a. The movement of a bacterium in response to a chemical stimulus
Type of bacterium in which the bacterial cell is found to possess an axial filament
a. Spirochete
b. Archea
c. Mycoplasma
d. Mycobacterium
a. Spirochete
The function of the sex pilus of Escherichia coli involves _.
a. Passage of solutes through the outer
membrane
b. Movement of cells in a twitching type
motion
c. Attachment of cells to inert surface
d. Transfer of DNA between bacteria during
conjugation
d. Transfer of DNA between bacteria during conjugation
The most common cause of bacterial osteomyelitis is _.
a. S. pyogenes
b. S. aureus
c. M. tuberculosis
d. E. coli
b. S. aureus
Which of the ff describes the characteristic
radiographic pattern of osteomyelitis?
a. Sun-ray
b. Cotton-wool
c. Moth-eaten
d. Lacy opacities
c. Moth-eaten
Which of the following is the most common cause of subacute endocarditis?
a. Staphylococcus aureus
b. Staphylococcus saprophyticus
c. Streptococcus pyogenes
d. Streptococcus viridans
d. Streptococcus viridans
Unique Gram-positive bacteria thought to possess an endotoxin?
a. Listeria monocytogenes
b. Clostridium tetani
c. Actinomyces israelii
d. Propionibacterium acnes
a. Listeria monocytogenes
Which of the following produces spores under extreme conditions?
a. Actinomyces
b. Candida
c. Lactobacillus
d. Clostridium
d. Clostridium
The biopsy report of a nodule in the palate states: A central area of caseous necrosis was noted with cluster of epithelioid cells and giant cells surrounded by a peripheral zone of lymphocytes.
a. The associated condition is most likely
b. Kaposi sarcoma
c. Hodgkin’s lymphoma
d. Tuberculosis
e. Mucormycosis
d. Tuberculosis
Each of the following may be indicative of congenital syphilis EXCEPT
a. Eight nerve deafness
b. Interstitial keratitis
c. Notching of central incisors
d. Locomotor ataxia
d. Locomotor ataxia
Which of the following statements is NOT correct about biofilms?
a. It makes bacteria less sensitive to
antibiotics
b. It makes bacteria more sensitive to
antibiotics
c. It protects the bacteria within
d. It is often polymicrobial
b. It makes bacteria more sensitive to
antibiotics
The etiologic agent of Rubella is
a. Herpesvirus
b. Picornavirus
c. Paramyxovirus
d. Togavirus
d. Togavirus
Hepatitis B surface antigen in a patient’s serum indicates that the patient is
a. Recovered
b. Potentially infectious
c. Now an acceptable blood donor
d. Not in need of vaccination
b. Potentially infectious
Which of the following is the most common cause of viral gastroenteritis in children?
a. Rotavirus
b. Picornavirus
c. Paramyxovirus
d. Orthomyxovirus
a. Rotavirus
Neuraminidase is produced by _.
a. Orthomyxovirus
b. Togavirus
c. Hepatitis C virus
d. Human Immunodeficiency Virus
a. Orthomyxovirus
A febrile 6-y.o. boy complains of blisters all over the body that eventually dry out and form scabs. Which of the ff should you NOT prescribe to prevent organ damage?
a. Narcotic
b. Paracetamol
c. Celecoxib
d. Aspirin
d. Aspirin
A positive heterophile antibody test indicates that the patient has
a. Hepatitis B
b. Herpes zoster
c. Influenza
d. Mononucleosis
d. Mononucleosis
For management, the patient was placed on HAART which means _.
a. Human Active Antiretroviral Treatment
b. HIV Active Antiviral Recovery Treatment
c. HIV Antiretroviral Active Recovery Therapy
d. Highly Active Antiretroviral Therapy
d. Highly Active Antiretroviral Therapy
Primary means of transmission of coronavirus
a. Fecal-oral
b. Parenteral
c. Droplet
d. Sexual contact
c. Droplet
Which of the ff. does NOT have any effect on the formation of oral candidiasis?
a. Wearing dental prosthesis
b. Type of toothpaste used
c. Malignant illnesses and AIDS
d. Radiotherapy
b. Type of toothpaste used
Aflatoxin produced by Aspergillus sp. has been associated with carcinoma of which organ tissue?
a. Lungs
b. Liver
c. Colon
d. Kidney
b. Liver
Creutzfeldt-Jakob disease is caused by which of the following agents?
a. Bacterium
b. Virus
c. Prion
d. Plasmid
c. Prion
The following microorganisms can cross the blood placenta barrier and infect the developing fetus EXCEPT
a. Toxoplasma gondii
b. Rubella virus
c. Cytomegalovirus
d. None of the above
d. None of the above
