REFRES~5

Angeles University COLLEGE OF MEDICINE REFRESHER COURSE EXAMINATION MICROBIOLOGY AND PARASITOLOGY January 09, 2004 Name: _________________________________

SCORE: ________________

I. CHOOSE THE CORRECT ANSWER. _____ 1.

Mycobacterial lipid: A. Responsible for the acid fastness of the organism B. Makes the organism resistant to the effects of the complement and antibodies C. Responsible for their serpentine growth D. All of the above

_____ 2.

In primary tuberculosis… A. The person becomes sensitie to the tuberculo protein of the organism B. When the infection resolves, the Gohn complex is seen in the hilar region of the lungs C. Dormant bacilli are establish D. All of the above

_____ 3.

Culture medium used for M. tuberculosis: A. Lowenstein-Jennsen medium C. Subouraud dextrose agar B. Blood agar D. TCBS

_____ 4.

The most definitive tool in the diagnosis of tuberculosis due to M. tuberculosis is: A. Acid-fast staining C. Culture B. Chest X-ray D. Serology

_____ 5.

One of the following is NOT a part of the tubercle bacilli complex: A. M. africanum C. M. bovis B. M. canis D. M. tuberculosis

_____ 6.

Controlling tuberculosis means: A. Finding cases and treating them B. Seeing to it that the cases will finish the full course of treatment C. Both D. Neithr

_____ 7.

The advantage of the Bactec method over the conventional culture for TB is: A. It is highly specific for M. tuberculosis C. It is a rapid test B. It is cheap D. All of the above

_____ 8.

In pulmonary tuberculosis is the host response is primarily: A. Cell mediated immune response C. Both B. Humoral immune response D. Neither

_____ 9.

The most common mode of transmission of HIV: A. Homosexual and heterosexual intercourse C. Mother to child B. Transfusion of blood and blood products D. All of the above

_____10.

Possible outcome of HIV infection of T helper cells: A. Stay latent C. Both B. Go into productive cycle D. Neither

_____11.

The decline in the antibodies against this HIV marker heralds the beginning of AIDS symptoms: A. Anti-p24 C. Anti-gp41 B. Anti-gp120 D. None of the above

_____12.

Which of the following is an AIDS indicator disease? A. Toxoplasmosis of brain C. Kaposis sarcoma B. PC pneumonia d. All of the above

_____13.

The test used to confirm HIV infection is: A. ELISA C. Northern blot B. Southern blot D. Western blot

_____14.

Which is most commonly used for the treatment of HIV? A. Zidovudine C. Amantadine B. Saquinavir D. Rifampicin

_____15.

A specific virologic diagnosis of HIV can be achieved by: A. Detection of viral components in the plasma, such as p24 B. Presence of anti-HIV in the serum C. Isolation of virus D. All of the above

_____16.

Most common viral cause of diarrhea in infancy: A. Adenovirus C. Rotavirus B. Norwalk virus D. Polio virus

_____17.

Which of the following protozoans has a “smiling face”? A. Giardia lamblia C. Trichomonas vaginalis B. Chilomastix mesnili D. Balantidium coli

_____18.

Characteristics of nematodes: A. They are roundworms B. They are flatworms

C. They are unicellular D. They are hermaphroditic

Trichuriasis may cause A. Intestinal obstruction B. Pruritus ani

C. Pneumonitis D. Rectal prolapse

Enterobiasis: A. Common cause of pruritus ani B. Diagnosed by direct fecal smear

C. Has an indirect life cycle D. Also known as whipworm infection

_____19.

_____20.

_____21.

This parasite does not require development in soil: A. Trichuris trichiura C. Ascaris lumbricoides B. Ancylostoma duodenale D. Enterobius vermicularis

_____22.

The larvae of this parasite migrate via the pulmonary route: A. Trichuris trichiura C. enterobius vermicularis B. Capillaria philippinensis D. Ascaris lumbricoides

_____23.

This will differentiate E. histolytica from E. coli A. Number of nuclei in trophozoite C. Shpae of nucleus in trophozoite B. Size of trophozoite D. Presence of RBC inside trophozoite

_____24.

A 2-year-old passed out a “big worm” that looks like an earthworm. Most likely diagnosis: A. Ascaris lumbricoides C. Trichuris trichiura B. Enterobius vermicularis D. Strongyloides stercoralis

_____25.

Which of the following will most likely cause intestinal obstruction? A. Trichuris trichiura C. Capillaria philippinensis B. Ancyiostoma duodenaie D. Ascaris lumbricoides

_____26.

Etiologic agent of traveler’s diarrhea: A. ETEC B. EPEC

C. EIEC D. Vibrio cholerae

_____27.

Typhoid fever is characterized by the following, EXCEPT: A. Splenomegaly C. Rose colored spots B. High grade fever D. Rice water stools

_____28.

Cholera is characterized by the following, EXCEPT: A. Washerwoman’s hands C. Sunken eyes B. Rice water stool D. Mucoid and bloody diarrhea

_____29.

The following are gram-negative curved rods: A. Vibrio cholerae C. Yersinia enterocolitica B. Campylobacter jejuni D. Only A and B are correct

_____30.

Shigellosis is characterized by the following, EXCEPT: A. Tenesmus C. Vomiting B. Copious water diarrhea D. Stool with blood and mucus

_____31.

The best specimen to collect during the 1st week of typhoid fever is: A. Blood C. Both A and B B. Stool D. Either A or B

_____32.

Vibrio parahemolyticus is associated with: A. Poultry C. Seafoods B. Meal and meat products D. Dairy products

_____33.

Campylobacteriosis is usually seen in: A. Adults B. Teen-agers

C.