Micro '04 Final-First 50

Type III hypersensitivity is mediated by which of the following cells

Which of the following two sites in the oral cavity would have the most similar types of microbial flora?

Protection against encapsulated bacteria is mediated by

Which of the following bacterial species would MOST LIKELY be isolated from a carious lesion on the root of a tooth?

Shingles or herpes zoster is caused by herpesvirus that undergoes latency in dorsal root ganglion. When the immune system is suppressed the latent virus undergoes active multiplication and travels to the skin and causes painful lesions. Which of the following is used as a vaccine against this herpesvirus?

A restriction endonuclease

Chronic gingivitis has a predominance of

Porphyromonas gingivalis is associated with

If an antibody can block the attachment by HIV to a T helper cell then the antibody MOST LIKELY binds to

A definite diagnosis of gonorrhea can be made by

An enzyme produced by Porphyromonas gingivalis that is of significance in the pathogenesis of periodonitits

Cytokines secreted by Th1 cells includes

Antiboodies are produced in

Which of the following statements about Mycobacterium tuberculosis or the disease it causes it CORRECT?

Tetracycline is used in the treatment of localized aggressive periodontitis formerly localized juvenile periodontitis). Tetracycline exerts its effects on oral bacteria by

A patient of yours dies within ten minutes following an injection of penicillin to treat abscess. Unfortunately, you did not ask the patient if she was allergic to any medications. Which hypersensitivity reaction is responsible for this outcome?

Which of the following can be found in both gram-negative and gram positive bacteria?

Nongonococcal urethritis caused by Chlamydia trachomatis and gonorrhea are similar in that BOTH

Bacterial antibiotic resistance genes commonly reside on

A 17 year old female reports to the STD clinic. Her major complain is tiredness and persistent swelling of her lymph nodes. The lab reports that the HIV ELISA was positive once but not when it was repeated. A Western blot was not done. However, the lab did report the presence of the p24 antigen in her blood. Which of the following statements is MOST LIKELY correct?

Which of the following statements is TRUE concerning peptidoglycan?

Which of the following is the B cell receptor for antigen?

Which of the following virus causes persistent infections of the skin and mucous membranes leading to anogenital warts?

Which of the following cardiac conditions requires prophylactic antibiotic treatment for subacute bacterial endocarditis before dental procedures?

You are conducting a clinical trial for an experimental maxilloficial bone graft. Which would have the BEST chance of success?

Acyclovir is a drug of choice for many herpesvirus infections. Which of the following are affected by this drug?

Bacterial spores are resistant to many chemicals and heat. Which of the following statements is TRUE concerning them?

Burkitt's lymphoma, a tumor of the lower jaw of the African children, is caused by a DNA virus that multiplies and undergoes latency in

Which of the following is unique to gram negative bacteria?

Which of the following agents or processes can kill spores?

In chronic periodontitis the types of organisms that are MOST LIKELY to be found at the site of the lesion include

Which of the following pairs of disease may be transmitted by the bite of a tick?

The most common route for the development of pulpitis

Which of the following enzymes is used by the virus that causes adult T cell leukemia?

Tetracycline is contraindicated in the treatment of infections of pregnant women and young children because this antibiotic

Which of the following organisms produces a toxin that inhibits the release of acetylcholine causing flaccid paralysis?

A major virulence determinant of Streptococcus mutans is associated with its ability to produce which of the following extracellular enzymes?

Condyloma acuminata, or anogenital warts, is caused by papillomaviriruses that are confined to the skin and mucous membranes. Which of the following is an important feature of papillomavirus?

Measles virus mostly causes an acute infection. Sometimes, it can cause a chronic infection leading to a demyelinating disorder known as

A RNA viral agent causes oral lesions associated with the disease known as herpangina. Which of the following BEST describes this viral agent?

Analysis of a specimen from a patient's mycetoma on the right ankle revealed the presence of acid-fast, filamentous bacteria. The infection is MOST LIKELY due to

This gram negative bacterium produces a green pigment and has a predilection for patins with burns or cystic fibrosis. Which of the following is another CORRECT statement about this organism?

Which of the following agents is used to treat infections of individuals who are allergic to penicillin?

Metronidazole was first introduced to treat protozoal infections. However, the drug is now used to treat oral infections including acute necrotizing ulcerative gingivitis. Metronidazole is effective in the treatment of oral infections because of its activity against which of the following?

Which of the following statements about the phases of HIV infection is CORRECT?

Anthrax occurs when a person

For which of the following viral infections are both active and passive immunization recommended after exposure to the viral agent?

The mutans streptococci are both acidogenic and acid uric. With respect to these properties which of the following statements BEST describes these bacteria?

A 26 year old male suffers from viral hepatitis for almost 8 months. Examination of his liver tissue reveals the presence of a RNA virus genome. Within a few years, this patient develops hepatocellular carcinoma. Interferon therapy was recommended. Which of the following is TRUE for this causative viral agent?

Which of the following virus causes a known congenital infection that can lead to severe damage to the fetus when the fetus is infected during the first trimester of pregnancy?