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القناة

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📌 رابط قناة اليوتيوب

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📌 مستمرين إن شاء الله بالشروحات لكل المراحل والمواد للتواصل على هذا المعرف @J_AhmedA

موفقين إن شاء الله ولا تنسونا من دعائكم.

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إن شاء الله تجاوبون وباعلى الدرجات 🤲

🔺 بشرو شلونها الأسئلة ؟

اذا احد حصل الها تصوير خلي يدزها بلا زحمة

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🔺 لا تفكرون حاليا بأي شي بعد توجهو المادة الثانية

🔺 الي كدرتو تقرون هاي هيه وإن شاء الله تنجحون الي مالحك أو يخت 😅
خلي يركز على بقية الأمتحانات وهاي تسهل إن شاء الله

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https://t.me/+EP-rmPaS24VmNzNi

🔺 بسم الله
الاختبار الشامل فطريات اسفل هذه الرسالة .

Q1: The term "Mycology" is derived from the word "mykos" which means:

A) Parasite
B) Mushroom
C) Bacteria
D) Virus
✅ Correct Answer: B) Mushroom

Q2: Fungi are classified as:

A) Prokaryotic organisms
B) Prokaryotic and Eukaryotic
C) Eukaryotic organisms
D) Non-cellular organisms
✅ Correct Answer: C) Eukaryotic organisms

Q3: The approximate diameter of fungi is:

A) 1 µm
B) 4 µm
C) 10 µm
D) 20 µm
✅ Correct Answer: B) 4 µm

Q4: The cell wall of fungi primarily contains:

A) Peptidoglycan
B) Cellulose
C) Murein
D) Chitin
✅ Correct Answer: D) Chitin

Q5: The cell wall of bacteria primarily contains:

A) Chitin
B) Ergosterol
C) Peptidoglycan
D) Cellulose
✅ Correct Answer: C) Peptidoglycan

Q6: Fungi are NOT sensitive to penicillin because:

A) They have ergosterol in their membrane
B) Their cell wall contains chitin instead of peptidoglycan
C) They are eukaryotic organisms
D) They have mitochondria
✅ Correct Answer: B) Their cell wall contains chitin instead of peptidoglycan

Q7: Chitin is a polysaccharide consisting of long chains of:

A) Glucose
B) Fructose
C) N-acetylglucosamine
D) Galactose
✅ Correct Answer: C) N-acetylglucosamine

Q8: Beta-glucan in the fungal cell wall is the target of the antifungal drug:

A) Fluconazole
B) Amphotericin B
C) Caspofungin
D) Ketoconazole
✅ Correct Answer: C) Caspofungin

Q9: The cell membrane of fungi contains:

A) Cholesterol
B) Ergosterol
C) Testosterone
D) Sitosterol
✅ Correct Answer: B) Ergosterol

Q10: The cell membrane of human cells contains:

A) Ergosterol
B) Sitosterol
C) Cholesterol
D) Lanosterol
✅ Correct Answer: C) Cholesterol

Q11: Antifungal agents such as Amphotericin B, Fluconazole, and Ketoconazole have selective action on fungi due to:

A) Presence of chitin in fungal cell wall
B) Presence of peptidoglycan in fungal cell wall
C) Difference in membrane sterols (ergosterol in fungi vs. cholesterol in humans)
D) Presence of mitochondria in fungi
✅ Correct Answer: C) Difference in membrane sterols (ergosterol in fungi vs. cholesterol in humans)

Q12: Fungi are placed in the phylum:

A) Thallophyta
B) Bryophyta
C) Pteridophyta
D) Spermatophyta
✅ Correct Answer: A) Thallophyta

Q13: The four classes of fungi in taxonomical classification are:

A) Yeasts, Molds, Dimorphic, Imperfect
B) Zygomycetes, Ascomycetes, Basidiomycetes, Deuteromycetes
C) Superficial, Cutaneous, Subcutaneous, Systemic
D) Anthropophilic, Zoophilic, Geophilic, Saprophytic
✅ Correct Answer: B) Zygomycetes, Ascomycetes, Basidiomycetes, Deuteromycetes

Q14: Fungi that do NOT produce sexual spores are called:

A) Ascomycetes
B) Basidiomycetes
C) Fungi Imperfecti (Deuteromycetes)
D) Zygomycetes
✅ Correct Answer: C) Fungi Imperfecti (Deuteromycetes)

Q15: Yeasts reproduce by:

A) Sexual sporulation
B) Asexual budding
C) Binary fission
D) Conjugation
✅ Correct Answer: B) Asexual budding

Q16: An example of a true yeast is:

A) Candida albicans
B) Aspergillus fumigatus
C) Cryptococcus neoformans
D) Rhizopus
✅ Correct Answer: C) Cryptococcus neoformans

Q17: Candida albicans is morphologically classified as:

A) True yeast
B) Yeast-like fungi
C) Mold
D) Dimorphic fungi
✅ Correct Answer: B) Yeast-like fungi

Q18: The width of hyphae in molds is approximately:

A) 1-2 µm
B) 2-10 µm
C) 10-20 µm
D) 20-30 µm
✅ Correct Answer: B) 2-10 µm

Q19: Nonseptate hyphae are characterized by being:

A) Uninucleated
B) Multinucleated
C) Anucleated
D) Binucleated only
✅ Correct Answer: B) Multinucleated

Q20: The part of mycelium that projects above the surface in culture medium is called:

A) Vegetative mycelium
B) Aerial mycelium
C) Substrate mycelium
D) Rhizoid
✅ Correct Answer: B) Aerial mycelium

Q21: Dimorphic fungi exist as hyphal/mycelial forms at:

A) 37°C in soil
B) 22-25°C in soil and culture
C) 4°C in culture
D) 42°C in tissue
✅ Correct Answer: B) 22-25°C in soil and culture

Q22: Dimorphic fungi occur as yeasts or other structures in human tissue at:

A) 22-25°C
B) 4°C
C) 37°C
D) 42°C
✅ Correct Answer: C) 37°C

Q23: Which of the following is NOT a dimorphic fungus?

A) Histoplasma capsulatum
B) Coccidioides

immitis
C) Aspergillus fumigatus
D) Sporothrix schenckii
✅ Correct Answer: C) Aspergillus fumigatus

Q24: Examples of dimorphic fungi include all of the following EXCEPT:

A) Coccidioides immitis
B) Paracoccidioides brasiliensis
C) Cryptococcus neoformans
D) Blastomyces dermatitidis
✅ Correct Answer: C) Cryptococcus neoformans

Q25: Sexual spores in fungi are of how many types?

A) 2
B) 3
C) 4
D) 5
✅ Correct Answer: B) 3

Q26: Ascospores are formed in a sac called:

A) Basidium
B) Sporangium
C) Ascus
D) Conidiophore
✅ Correct Answer: C) Ascus

Q27: Basidiospores are formed:

A) Inside a sac called ascus
B) Inside a sporangium
C) Outside on the tip of a pedestal called basidium
D) By fragmentation of hyphae
✅ Correct Answer: C) Outside on the tip of a pedestal called basidium

Q28: Zygospores are characterized by being:

A) Small and numerous
B) Single, large spores with thick wall
C) Formed inside an ascus
D) Found on the tip of basidium
✅ Correct Answer: B) Single, large spores with thick wall

Q29: Asexual spores in fungi are produced by:

A) Meiosis
B) Mitosis
C) Fertilization
D) Conjugation
✅ Correct Answer: B) Mitosis

Q30: Arthrospores are formed by:

A) Budding from parent cells
B) Rounding and thickening of hyphal segments
C) Fragmentation of the ends of hyphae → rectangular thick-walled spores
D) Formation inside a sac
✅ Correct Answer: C) Fragmentation of the ends of hyphae → rectangular thick-walled spores

Q31: Arthrospores are the infective stage of:

A) Candida albicans
B) Cryptococcus neoformans
C) Coccidioides immitis
D) Histoplasma capsulatum
✅ Correct Answer: C) Coccidioides immitis

Q32: Terminal chlamydospores help in the identification of:

A) Aspergillus fumigatus
B) Cryptococcus neoformans
C) Candida albicans
D) Histoplasma capsulatum
✅ Correct Answer: C) Candida albicans

Q33: Blastospores are formed by:

A) Fragmentation of hyphae
B) Budding process from parent cells such as yeast
C) Rounding and thickening of hyphal segments
D) Formation inside sporangium
✅ Correct Answer: B) Budding process from parent cells such as yeast

Q34: Pseudohyphae are:

A) True hyphae with septa
B) Elongated yeast that resemble hyphae morphologically but are not true hyphae
C) Hyphae without nuclei
D) Hyphae of Zygomycetes
✅ Correct Answer: B) Elongated yeast that resemble hyphae morphologically but are not true hyphae

Q35: Sporangiospores are formed inside a sac called sporangium, which develops at the ends of hyphae called sporangiophores. Examples include:

A) Aspergillus and Penicillium
B) Mucor and Rhizopus
C) Candida and Cryptococcus
D) Histoplasma and Blastomyces
✅ Correct Answer: B) Mucor and Rhizopus

Q36: Macroconidia are characterized by being:

A) Small and unicellular
B) Large, aseptate, often multicellular conidia
C) Formed inside sporangium
D) Formed by budding
✅ Correct Answer: B) Large, aseptate, often multicellular conidia

Q37: Most fungi are:

A) Obligate anaerobes
B) Obligate aerobes or facultative anaerobes
C) Obligate aerobes only
D) Facultative anaerobes only
✅ Correct Answer: B) Obligate aerobes or facultative anaerobes

Q38: Which fungus is an exception and forms part of the normal human flora?

A) Aspergillus fumigatus
B) Cryptococcus neoformans
C) Candida albicans
D) Histoplasma capsulatum
✅ Correct Answer: C) Candida albicans

Q39: Fungal infection that occurs in immunocompromised hosts is called:

A) Systemic mycosis
B) Opportunistic mycosis
C) Subcutaneous mycosis
D) Superficial mycosis
✅ Correct Answer: B) Opportunistic mycosis

Q40: The effects of fungi on humans can be grouped into how many major ways?

A) 2
B) 3
C) 4
D) 5
✅ Correct Answer: B) 3

Q41: Which type of immunity is MOST important in conferring protection against fungi?

A) Humoral immunity
B) Cell-mediated immunity (CMI)
C) Innate immunity only
D) IgE antibodies
✅ Correct Answer: B) Cell-mediated immunity (CMI)

Q42: Suppression of cell-mediated immunity leads to:

A) Better resistance to fungi
B) Reactivation and dissemination of asymptomatic fungal infection
C) Improvement in IgG function
D) Increased macrophage activity
✅ Correct Answer: B) Reactivation and dissemination of asymptomatic fungal infection

Q43: Humoral immunity against fungi is mediated by production of:

A) T cells
B) NK cells
C) IgG and IgM antibodies
D) B cells only
✅ Correct Answer: C) IgG and IgM antibodies

Q44: Ingestion of Amanita mushrooms causes liver necrosis due to presence of two fungal toxins:

A) Aflatoxin and Phalloidin
B) Amanitin and Phalloidin
C) Amanitin and Aflatoxin
D) Ergotamine and Amanitin
✅ Correct Answer: B) Amanitin and Phalloidin

Q45: Amanitin inhibits:

A) DNA polymerase
B) RNA polymerase that synthesizes cellular mRNA
C) Ribosome
D) Protease
✅ Correct Answer: B) RNA polymerase that synthesizes cellular mRNA

Q46: Ingestion of peanuts and grains contaminated with Aspergillus flavus causes liver cancer due to:

A) Amanitin
B) Phalloidin
C) Aflatoxin
D) Ergotamine
✅ Correct Answer: C) Aflatoxin

Q47: Inhalation of spores of Aspergillus fumigatus can cause:

A) Liver cancer
B) Allergic bronchopulmonary aspergillosis
C) Cryptococcal meningitis
D) Tinea versicolor
✅ Correct Answer: B) Allergic bronchopulmonary aspergillosis

Q48: Allergic bronchopulmonary aspergillosis is a/an:

A) IgG-mediated response
B) IgM-mediated response
C) IgA-mediated response
D) IgE-mediated immediate hypersensitivity response
✅ Correct Answer: D) IgE-mediated immediate hypersensitivity response

Q49: The habitat of Cryptococcus is:

A) Human body
B) Soil (pigeon feces)
C) Fresh water
D) Decaying plants
✅ Correct Answer: B) Soil (pigeon feces)

Q50: The portal of entry of Aspergillus into the human body is:

A) Through wounds
B) Through contaminated food
C) Inhalation of conidia into lungs
D) Through animal contact
✅ Correct Answer: C) Inhalation of conidia into lungs

Q51: Clinical manifestations of hypersensitivity pneumonitis include all EXCEPT:

A) Rhinitis
B) Bronchial asthma
C) Alveolitis
D) Liver necrosis
✅ Correct Answer: D) Liver necrosis