Forwarded from ㅤHAMD ALZWAWY
28) Dimorphism in fungi refers to:
a-the ability of fungi to produce two types of spores
b-the ability of fungi to undergo mitosis as well as meiosis
c-the property of fungi to develop spherical and elongated forms of nuclei
d-the characteristic of certain fungi to develop male and female hyphae in one colony
E-the ability of fungi to grow in two different forms, yeast and mycelial, depending on environmental conditions
a-the ability of fungi to produce two types of spores
b-the ability of fungi to undergo mitosis as well as meiosis
c-the property of fungi to develop spherical and elongated forms of nuclei
d-the characteristic of certain fungi to develop male and female hyphae in one colony
E-the ability of fungi to grow in two different forms, yeast and mycelial, depending on environmental conditions
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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