BACTE-MICROPARA STUDY GUIDE

Host that harbor-the mature form of the parasite

a. Definitive Host

b. Intermediate host

c. Incidental Host

d. Paratenic Host

a. Definitive Host

Resistant stage of protozoans that is usually the infective stage

a. Trophozoite

b. Cyst

c. Ovum

d. Larva

e. Both B and C

b. Cyst

Which of the following parasites belong to Phylum Platyhelminthes?

i. Ascaris lumbricoides

ii. Schistosoma japonicum

iii. Fasciola hepatica

iv. Trichinella spiralis

a. i, ii, iii, iv

b. ii, iii

c. I only

d. iii only

e. i, iv

b. ii, iii

Which of the following is incorrect about Toxoplasmosis?

a. Toxoplasma gondii parasite primarily infects felines

b. Toxoplasma can cause severe birth defects to the unborn child

c. Infection among humans usually occurs by inhalation of infective tachyzoites in the cat feces

d. Serology remains the most cost-effective method for diagnosing toxoplasmosis

e. Immunocompromised patients may exhibit neurologic manifestations such as meningitis

e. Immunocompromised patients may exhibit neurologic manifestations such as meningitis

These are cysts that are 8 um in diameter, oval shaped with 4 blot like karyosomal masses outlined by clear spaces and appears cross eyed. This best describes which cyst?

a. Entamoeba polecki

b. Dientamoeba fragilis

c. Endolimax nana

d. Chilomastix mesnili

e. Giardia lamblia

c. Endolimax nana

Babesia is a protozoan implicated among splenectomized patients. Morphologically, the parasite resembles

a. P. carinii oocysts

b. T. cruzi trophozoites

c. P. falciparum rings

d. L. donovani amastigotes

c. P. falciparum rings

Which of the following parasites can be transmitted to man via arthropod vectors?

i. Babesia

ii. Trypanosoma

iii. Onchocerca

iv. Anglostrongylus

a. 1, 2

b. 1, 2, 3

c. 2 only

d. 4 only

e. All of the above

b. 1, 2, 3

A partially acid fast oocyst containing sporozoites was detected from a diarrheic stool. It measures approximately 4-6um. This is most likely

a. Cryptosporidium

b. Cyclospora

c. Isospora

d. Microsporidium

a. Cryptosporidium

A soil and water amoeba isolated from cases of meningoencephalitis is usually caused by?

a. Naegleria

b. Dientamoeba

c. Isospora

d. All of the above

a. Naegleria

West African Sleeping sickness is caused by?

a T. cruzi

b. T. gambiense

c. T. rhodesiense

d. B and C

e. T. donovani

b. T. gambiense

Which of the following parasitic infections are not usually diagnosed by recovering eggs or larvae in stool?

a. Ascariasis

b. Trichinosis

c. Capilllariasis

d. Strongyloidiasis

e. All can be diagnosed by the said method

e. All can be diagnosed by the said method

Which of the following possess a filariform larva with a bifid tail?

a. Hookworms

b. Threadworms

c. Blood flukes

d. Tapeworms

b. Threadworms

The following can be detected in a patient with Ascariasis, except:

a. Fertilized egg

b. Unfertilized egg

c. Adult stages

d. Embryonated egg

e. All can be detected

e. All can be detected

Which of the following parasites is capable of self fertilization?

a. S. stercoralis parasitic females

b. S. stercoralis free-living females

C. C. philippinensis parasitic females

d. E. vermicularis parasitic gravid females

a. S. stercoralis parasitic females

The Unholy Three"

1.Hookworm

2.Pinworm

3. Giant Intestinal Roundworm

4.Whipworm

a. 1, 2, 3

b. 2, 3, 4

c. 1, 3, 4

d. 1 ,2, 4

c. 1, 3, 4

Diagnostic Stage of W. bancrofti

a. Microfilaria: overlapping body nuclei, sheathed, terminal nuclei present

b. Microfilaria: evenly spaced body nuclei; unsheathed, no terminal nuclei

c. Microfitaria evenly spaced body nuclei sheathed; terminal nuclei absent d. Microfilaria: overlapping body nuclei, unsheathed; terminal nuclei present

e. L3 filiform larva in blood

c. Microfitaria evenly spaced body nuclei sheathed; terminal nuclei absent

Which of the following parasite and diagnostic tests are mismatched?

a. Trichinella spiralis: Direct Fecal Smear

b. Enterobius vermicularis: Cellophane Tape Preparation

c. Strongyloides: Baermann Techniqued Brugia malayi.

d. Knott's Concentration Technique

c. Strongyloides: Baermann Technique

Hydrocoele, tropical pulmonary eosinophilia and elephantiasis are indicative of?

a. Lymphatic filariasis

b. Onchocerciasis

c. Anisakiasis

d. Heterophylasis

a. Lymphatic filariasis

Mucolytic added to sputum samples needed for the diagnosis of paragonimiasis

a. 3% NaOH

b. HCI

c. Carold

d. Oxalic Acid

a. 3% NaOH

Helminth eggs that may resemble each other:

a. D. latum and P. westermani

b. O. sinensis and F. buski

c. T. saginata and H. nana

d. A. lumbricoides and Trichostrongylus

a. D. latum and P. westermani

Fish carrying metacercariae can transmit which parasite?

a. Clonorchis

b. Fasciolopsis

c. Paragonimus

d. Schistosoma

a. Clonorchis

The adult worm is described as flat, spatulate, with a large oral sucker, simple intestinal ceca and branched testes in tandem

Clonorchis sinensis

The adult worm is described as flat, with a gonotyl

Heterophyes heterophyes

The adult worm is described as flat, with collar spines surrounding the oral sucker

Echinostoma ilocanum

The adult worm is described as flat, leaf like, well developed shoulders and a prominent cephalic cone

Fasciola hepatica

Chronic infections of this fluke is highly associated with cholangiocarcinoma

Clonorchis sinensis

The infective stage of monoecious flukes to the final host

a Metacercaria

b. Cercaria

c. Miracdium

d. Embryonated egg

a Metacercaria

Which of the following flukes require a snail as a 2nd IH

a. Garrison's Fluke

b. Von Siebold's Fluke

c. Chinese Liver Fluke

d. Lancet Fluke

e. No match

a. Garrison's Fluke

Which of the following has a pitcher like egg

a. Garrison's Fluke

b. Von Siebold's Fluke

c. Chinese Liver Fluke

d. Lancet Fluke

e. No match

c. Chinese Liver Fluke

Which fluke possess the gonotyl

a. Garrison's Fluke

b. Von Siebold's Fluke

c. Chinese Liver Fluke

d. Lancet Fluke

e. No match

b. Von Siebold's Fluke

Drug of Choice for filariasis

a. Metronidazole

b. Mebendazole

c. diethylcarbamazine

d. Bithionol

c. diethylcarbamazine

Pseudofascioliasis can occur if:

a. Patients ingest the intermediate host containing the metacercaria

b. Ingestion of miracidium

c. Infection of infected cooked liver with eggs

d. Ingestion of infected liver with cercaria

d. Ingestion of infected liver with cercaria

Which of the following is not a part of an adult cestode?

a. Scolex

b. Neck

c. Proglottids

d. Copulatory appendages

e. All are parts of an adult cestode

d. Copulatory appendages

Which of the following is incorrect about cestodes?

a. Adult Cestodes appear as flat, ribbon like worms

b. Cestodes do not possess any digestive system

c. All cestodes are dioecious

d. Adult Cestodes inhabit the small intestine

a. Adult Cestodes appear as flat, ribbon like worms

How do you call the body of the tapeworm?

a. Scolex

b. Proglottid

c. Strobila

d. Neck

c. Strobila

Possess 4 cuplike acetabulum

a. Pseudophylidean Cestode

b. Cyclophylidiean Cestode

c. Both

d. Neither

b. Cyclophylidiean Cestode

Anapolytic

a. Pseudophylidean Cestode

b. Cyclophylidiean Cestode

c. Both

d. Neither

c. Both

Rostellar Hooks are present

a. Pseudophylidean Cestode

b. Cyclophylidiean Cestode

c. Both

d. Neither

b. Cyclophylidiean Cestode

Spatulate Scolex

a. Pseudophylidean Cestode

Eggs are operculated

a. Pseudophylidean Cestode

b. Cyclophylidiean Cestode

c. Both

d. Neither

d. Neither

Which of the following has an unarmed rostellum?

a. Dog Tapeworm

b. Rat tapeworm

c. Pork tapeworm

d. Madagascar worm

b. Rat tapeworm

Which of the following is incorrect about Echinococcus granulosus?

a. Eggs are detectable in humans

b. Tapeworm species possessing 3 proglottids

c. Humans are accidental intermediate hosts

d. Hydatid cysts are infective to the final host

e. All are true statements

c. Humans are accidental intermediate hosts

A thick shelled egg, spherical, contains a hexacanth embryo with polar thickenings but lacks polar filaments

a. H. nana

b. H. diminuta

c. T. saginata

d. E. granulosus

a. H. nana

Which of the following nematode is acquired from ingestion of inadequately cooked, infected pork?

a. S. stercoralis

b. T. spiralis

c. T. saginata

d. T. solium

d. T. solium

45. E. granulosus

a. 2 genital pores on each segment

b. tree-like uterine branches (gravid proglottid)

c. Rosette uterus; uterine pore

d. Brood capsule filled w/ protoscolex

e. Eggs: fried egg appearance

d. Brood capsule filled w/ protoscolex

46. T. saginata

a. 2 genital pores on each segment

b. tree-like uterine branches (gravid proglottid)

c. Rosette uterus; uterine pore

d. Brood capsule filled w/ protoscolex

e. Eggs: fried egg appearance

b. tree-like uterine branches (gravid proglottid)

47. H. diminuta

a. 2 genital pores on each segment

b. tree-like uterine branches (gravid proglottid)

c. Rosette uterus; uterine pore

d. Brood capsule filled w/ protoscolex

e. Eggs: fried egg appearance

e. Eggs: fried egg appearance

48. D. latum

a. 2 genital pores on each segment

b. tree-like uterine branches (gravid proglottid)

c. Rosette uterus; uterine pore

d. Brood capsule filled w/ protoscolex

e. Eggs: fried egg appearance

c. Rosette uterus; uterine pore

49. D. caninum

a. 2 genital pores on each segment

b. tree-like uterine branches (gravid proglottid)

c. Rosette uterus; uterine pore

d. Brood capsule filled w/ protoscolex

e. Eggs: fried egg appearance

a. 2 genital pores on each segment

Mature eggs of an adult tapeworm accumulate in the

a. Neck

b. Ripe proglottid

c. Immature proglottid

d. Mature Proglottid

e. Scolex

b. Ripe proglottid

Complete virus particle with capsid:

a. Virion

b. hexon

c. nucleocapsid

d. Capsomere

a. Virion

Second intermediate host of Clonorchis sinensis:

a. snail

b. fish

c. crab

d. aquatic vegetations

b. fish

Eggs of Diphylobothrium latum:

a. With abopercular thickening

b. with operculum

c. With terminal spine

d. with mother capsule

b. with operculum

Tapeworm that is highly associated to megaloblastic anemia.

a. Taenia solium

b. Diphylobothrium latum

c. Echinococcus granulosus

d. Echinostoma ilocanum

b. Diphylobothrium latum

Gamma hemolytic, non motile, sporulating Gram positive bacteria

a. Bacillus anthracis

b. Bacillus cereus

c. Clostridium perfringens

d. none of the above

a. Bacillus anthracis

Lepra cells are described as:

a. Neutrophil with ingested round body

b. Macrophages with ingested acid-fast bacilli

c. Monocyte with ingested round body

d. Neutrophil with precipitated rheumatold factor

b. Macrophages with ingested acid-fast bacilli

Fecal contamination of water is confirmed by the presence of

a. coliform organism

b. diphtehroids

c. streptococcus

d. Staphylococcus

a. coliform organism

The early stage of malarial parasites in red blood cells is called the

a. segmenter

b. schizont

c. ring form

d. sporozoite

c. ring form

The following parasite has fully developed eggs when passed in the stool:

a. Ascaris lumbricoides

b. Paragonimus westermani

c. Clonorchis sinensis

d. Fasclolopsis buski

c. Clonorchis sinensis

The etiologic agents of many common colds are RNA viruses known as

a. Paramyxoviruses

b. Adenoviruses

c. Rhinoviruses

d. Orthomyxoviruses

c. Rhinoviruses

The organism believed to be a cause of human peptic ulcer disease as well as the most frequent cause of gastritis is

a. Campylobacter jejuni

b. Helicobacter pylori

c. Yersinia enterocolitica

d. Salmonella typhimurium

b. Helicobacter pylori

The outstanding feature of Escherichia on EMB agar is its

a. mucoid state

b. irregular margin

c. greenish metallic sheen

d. large size

c. greenish metallic sheen

A Gram-negative, "Kidney bean" cellular morphology is a distinguishing characteristic of

a. Morganella species

b. Neisseria species

c. Bartonella species

d. Actinobacteria species

b. Neisseria species

The name associated with the antigenic scheme for the serologic identification of Salmonellae is

a. Kauffmann-White

b. Schlicter

a. Kauffmann-White

The ovum of this parasite hatches upon contact with water

a. Clonorchis sinensis

b. Schistosoma haematobium

c. Heterophyes heterophyes

d. Metagonimus yokogaw

b. Schistosoma haematobium

Which of the following helminth eggs may be found in the urine?

a. Schistosoma haematobium

b. Paragonimus westermani

c. Schistosoma mansonl

d. Necator americanus

a. Schistosoma haematobium

The identifying characteristics of Plasmodium malariae infection are

a. crescent-shaped gametocytes (falciparum)

b. oval red blood cells (ovale)

c. Schuffner's dots (vivax)

d. band forms

d. band forms

One of the folowing organisms is NOT a gram positive coccus

a. Streptococci

b. Diplococcus pneumoniae

c. Staphylococci

d. Branhamella

d. Branhamella

Gram-negative motile rods with grayish spreading colonies on blood agar plate are

a. Salmonella

b. Proteus

c. Escherichia

d. Edardsiella

b. Proteus

A positive oxidase test on colonies containing Gram-negative diplococci will identify

a. only N. gonorrhoeae and N. meningitidis

b. Neisseria as a genus

c. N. gonnorhoeae but not N. meningitidis

d. only N. gonnorhoeae

b. Neisseria as a genus

Herpes simplex frequently produces

a. fever blisters

b. diarrhea

c. vomiting

d. Pneumonia

a. fever blisters

The etiologic agent of Qfever is

a. Rickettsia quintana

b. Rickettsia rickettsii

c. Coxiella burnetii

c. Coxiella burnetii

A positive catalase test is indicated by

a. production of pigment

b. gas production

c. clearing around the colonies

b. gas production

Trichinella spiralls are usually destroyed in pork by

a. refrigeration for 3 weeks

b. freezing at -15 for 20 days

c. 4-10 degrees Centigrade for 48 hours

d. cooking at 56°C

b. freezing at -15 for 20 days

The organism associated with the "traveler's diarrhea" is

a. Escherichia coli

b. Vibrio parahemolyticus

c. Proteus mirabilis

d. Shigella sonnei

a. Escherichia coli

Pfeiffer's bacillus

H. influenzae

Rat and mouse tapeworm

Hymenolepis diminuta

Koch's-Weeks bacillus

H. aegypticus; pink eye/conjunctivitis

Rocky mountain spotted fever

Rickettsia rickettsii

Help maintain pH in vagina

Lactobacillus

Whooping cough

Bordetella pertussis (MAC, bordet-gengou)

- BCYE

- Pontiac fever

Legionella

Rabbit fever

Francisella tularensis

Small living organism

mycoplasma, ureaplasma

M. hominis

Pelvic inflammatory disease in sexually active people

Mycoplasma pneumonia

Walking pneumonia

Clostridium

Gas gangrene

C. botulinum

Clostridium spp. obtained thru ingestion of contaminated canned goods

C. tetani

Bacteria that causes lock jaw

Colorless

Color of shigella on SSA

Spiral -shaped that causes neurosyphilis

Treponema pallidum

Malonate positive result

Blue

Malonate negative result

Yellow or green

H2S indicator ng TSI

Ferrous sulfate, sodium thiosulfate

African Eye Worm

Loa loa

Organism that causes elephantiasis

Filarial worms

Pigment that P. aeruginosa produces

Pyocyanin

Pigment that S. marcescens produces

Prodigiosin

Lung fluke

P. westermani

Clue cells

Gardnerella vaginalis