Forwarded from ㅤHAMD ALZWAWY
All of the following diseases are caused by yeast Except one:
Anonymous Quiz
12%
Candidiasis
20%
tinea versicolor
13%
cryptococcosis
55%
fungal ball
Forwarded from ㅤHAMD ALZWAWY
You have made a clinical diagnosis of meningitis in a 50-year-old immunocompromised woman. A latex agglutination test on the spinal fluid for capsular polysaccharide antigen is positive. Of the following organisms, which one is the MOST likely cause?
Anonymous Quiz
13%
Histoplasma capsulatum
69%
Cryptococcus neoformans
6%
Aspergillus fumigatus
10%
Candida albicans
2%
None of the above
Forwarded from ㅤHAMD ALZWAWY
Each of the following statements concerning Cryptococcus neoformans is correct
EXCEPT:
EXCEPT:
Anonymous Quiz
13%
a. Its natural habitat is the soil, especially associated with pigeon feces.
53%
Pathogenesis is related primarily to the production of exotoxin A.
15%
Budding yeasts are found in the lesions.
11%
The initial site of infection is usually the lung.
9%
Subcutancous nodules are often seen in disseminated disease.
Forwarded from ㅤHAMD ALZWAWY
Fungal cells that reproduce by budding are seen in the infected tissues of patients with:
Anonymous Quiz
69%
Candidiasis, cryptococcosis
8%
Mycetoma, candidiasis.
8%
Tinea corporis, tinea versicolor
12%
Sporotrichosis, mycetoma.
4%
Mycetoma, cryptococcosis
Forwarded from ㅤHAMD ALZWAWY
Aspergillosis is recognized in tissue by the presence of:
Anonymous Quiz
4%
Budding cells
71%
Septate hyphae
9%
Metachromatic granules
5%
Pseudohyphae
11%
Non-Septate hyphac
Forwarded from ㅤHAMD ALZWAWY
Each of the following statements concerning fungi is correct EXCEPT:
Anonymous Quiz
8%
Yeasts are fungi that reproduce by budding.
4%
Molds are fungi that have clongated filaments called hyphae.
8%
Thermally dimorphic fungi exist as yeasts at 37°C and as molds at 25°C.
63%
Both yeasts and molds have a cell wall made of peptidoglycan
16%
None of the above
Forwarded from ㅤHAMD ALZWAWY
Dimorphic fungi are most likely to be in which of the following fungal forms obtained sample from a patient?
Anonymous Quiz
59%
Yeasts
9%
Pseudohyphac
9%
Mycelium
18%
Hyphae
5%
Endospores
Forwarded from ㅤHAMD ALZWAWY
Which one of the following represents the mechanism of action of amphotericin B
Anonymous Quiz
6%
Inhibition of the activity of the enzyme, 14-a-demethylase
4%
Inhibition of GTP hydrolysis carried out by elongation factor-2 (EF-2).
17%
Inhibition of the activity of the enzyme, chitin synthase
69%
Interaction with fungal ergosterol to form pores in the fungal cell
4%
Inhibition of the activity of the enzyme, B-glucan synthase
Forwarded from ㅤHAMD ALZWAWY
Régarding the structure and reproduction of fungi, which one of the following in most accurate?
Anonymous Quiz
10%
Peptidoglycan is an important component of the cell wall of fungi.
12%
Molds are fungi that grow as single cells and reproduce by budding
12%
Some fungi are dimorphic (ic, they are yeasts at room temperature and molds at body temperature)
66%
The fungal cell membrane centains ergosterol, whereas the human cell membranc contains cholesterol
Forwarded from ㅤHAMD ALZWAWY
Regarding fungal pathogenesis, which one of the following is most accurate?
A-Ingestion of Amanita mushrooms typically causes kidney failure.
B-The Host response to infection by the systemic fungi, such as
Histoplasma and Coccidioides, consists of granulomas formation
C-ingestiom of aflatoxin produced by aspergillus flavus can cause adenocarcinome in colon
A-Ingestion of Amanita mushrooms typically causes kidney failure.
B-The Host response to infection by the systemic fungi, such as
Histoplasma and Coccidioides, consists of granulomas formation
C-ingestiom of aflatoxin produced by aspergillus flavus can cause adenocarcinome in colon
Forwarded from ㅤHAMD ALZWAWY
Pityriasis versicolor, all true except;
Anonymous Quiz
29%
Caused by Malassezia furfur
54%
It is chronic mild infection of the dermis
8%
Characterized by hyper and hypopigmented maculae
8%
Lesions usually oceur in the chest. upper back, arms and abdomen
Forwarded from ㅤHAMD ALZWAWY
Piedra, all the following are true, except;
Anonymous Quiz
57%
It is nail fungal infection
9%
Characterized by firm irregular nodule formation
16%
Black piedra caused by piedra hortae
19%
White piedra caused by trichosporon beigelli
Forwarded from ㅤHAMD ALZWAWY
Mycetoma all true, except:
Anonymous Quiz
13%
Appears as localized abcess
11%
The lesion usually on the foot
30%
Can be caused by Actinomyce
46%
Itraconazole is the drug of choice
Forwarded from ㅤHAMD ALZWAWY
Each of the following statements concerning Candida albicans is correct except
Anonymous Quiz
17%
C. albicans is a budding yeast that forms pseudo-hyphae when it invades tissue
8%
C. albicans causes thrush
48%
C. albicans is transmitted primarily by respiratory aerosol
20%
Impaired cell-mediated immunity is an important predisposing factor to discase
8%
It is part of the normal flora of mucous membranes of the upper respiratory
❤2
Forwarded from ㅤHAMD ALZWAWY
Which one of the following testsis specific for candida spp?
Anonymous Quiz
6%
Elek's test.
7%
Comb's test.
3%
ABO teste
4%
Burkt's test.
80%
Germ tube test.
Forwarded from صور سبورات المايكرو
Untitled Notebook (27).pdf
12.7 MB
ملخص ال vaccine
Untitled Notebook (29).pdf
8.4 MB
ملخص ال viral lab diagnosis
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Forwarded from كل مايخص طلاب الطب💜 (شِــفاء حــمد)
صور سبورات المايكرو
Untitled Notebook (27).pdf
ملخصات العماري لو في حد مالحقش يقرأ الكورسات هذينا يقراهن
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