50 Questions
Which organism is the causative agent of candidiasis?
Candida albicans
Which type of fungi are Candida albicans?
Gram-positive fungi
What is the unique feature of C. glabrata among Candida species?
Does not form pseudohyphae
How is Candida albicans identified on nutritionally deficient media?
Forms chlamydospores
What phenomenon is exhibited by Candida albicans when it forms germ tubes?
Reynolds Braude phenomenon
What usually precedes invasive candidiasis?
Increased colonization of the mouth and vagina
How do majority of non-albican vagina species enter the blood?
Through intravascular catheterization
What is the distinguishing factor between C. albicans and other Candida species?
Ability to form chlamydospores
What indicates accurate identification of Candida species other than C. albicans?
Biochemical tests
What is the term for the growth form of C. albicans seen as budding yeast cells but could form pseudohyphae in cultures and tissues?
Dimorphic growth
Which characteristic distinguishes Candida albicans from other Candida species?
Ability to form chlamydospores on nutritionally deficient media
What is the distinguishing feature of C. glabrata among Candida species?
Inability to form chlamydospores
Which phenomenon is exhibited by Candida albicans when it forms germ tubes?
Reynolds Braude phenomenon
How is Candida albicans identified on corn meal agar at 20°C?
Formation of chlamydospores
What typically precedes invasive candidiasis?
Increased colonization of the mouth and vagina
How do the majority of non-albican vagina species enter the blood?
Following intravascular catheterization
What is the causative agent of candidiasis?
Candida albicans
In what way are all pathogenic Candida similar to non-pathogenic strains?
Morphological appearance as budding yeast cells
What is the distinguishing feature of C. glabrata among Candida species?
It does not form pseudohyphae in cultures and tissues
What indicates accurate identification of Candida species other than C. albicans?
Biochemical tests
How do the majority of non-albican vagina species enter the blood?
Through intravascular catheterization
What phenomenon is exhibited by Candida albicans when it forms germ tubes?
Reynolds Braude phenomenon
In what way are all pathogenic Candida similar to non-pathogenic strains?
They are actually commensals of humans
Which type of fungi are Candida albicans?
Gram-positive fungi
What usually precedes invasive candidiasis?
Increased colonization of the mouth and vagina
What is the distinguishing factor between C. albicans and other Candida species?
Formation of germ tubes
What is the term for the growth form of C. albicans seen as budding yeast cells but could form pseudohyphae in cultures and tissues?
Blastoconidia
What is the causative agent of candidiasis?
Candida albicans
What is the minimum infective dose for humans of Giardia lamblia?
10-25 cysts
Where do trophozoites of Entamoeba histolytica differentiate into cysts?
Colon
How are cysts of Entamoeba histolytica removed from water?
Both A and C
What is the drug of choice for treating trichomoniasis caused by Trichomonas vaginalis?
Metronidazole
What indicates accurate identification of pathogenic strains of Entamoeba histolytica?
Polymerase chain reaction (PCR)
Where do trophozoites of Giardia lamblia attach in the intestine?
Duodenal villi
Which site is most frequently involved in systemic disease caused by Entamoeba histolytica?
Liver
Which test is used for laboratory diagnosis of giardiasis?
Identification of trophozoites and cysts in stools
What is the primary mode of transmission for Trichomonas vaginalis?
Sexual intercourse
What is the shape of the trophozoite of Trichomonas vaginalis?
Pear-shaped with central nucleus and anterior flagella
What does gastric acid stimulate in Giardia lamblia excystation?
Cyst release in the duodenum & jejunum
Which category of parasites includes single-celled organisms like amebas and flagellates?
Sarcodina
What is the classification for organisms like tapeworms and flukes?
Platyhelminthes
What is the medical importance of Entamoeba histolytica?
Causes liver abscess
How is Entamoeba histolytica primarily transmitted?
Fecal-oral route
Which category includes roundworms or nematodes?
Nemahelminthes
What disease is caused by Giardia lamblia?
Flagellate infection
What distinguishes Cestoda among the medically important classes within Phylum Platyhelminthes?
Characteristics of tapeworms
Which parasite is most prevalent among male homosexuals?
Entamoeba histolytica (ameba)
Which route of transmission primarily occurs among male homosexuals for Entamoeba histolytica?
Anal-oral transmission
What differentiates Sporozoa from Mastigophora?
Type of infection caused
What distinguishes Platyhelminthes from Nemahelminthes?
Classification as single-celled or multicellular
Learn about the identification, morphology, and clinical significance of Candida albicans, Cryptococcus neoformans, Histoplasma spp, and Mycetoma in this educational quiz by Dr. Razaq Momoh.
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