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Questions and Answers
What is the unique feature of the cell wall of fungi that distinguishes it from other organisms?
What is the unique feature of the cell wall of fungi that distinguishes it from other organisms?
The β-1,3 glucan cross overs and the chitin layer
What is the characteristic mode of reproduction of Saccharomycotina fungi?
What is the characteristic mode of reproduction of Saccharomycotina fungi?
Asexual budding
What is the name of the agar used specifically for fungal infections?
What is the name of the agar used specifically for fungal infections?
Sabouraud agar
What is the name of the common opportunistic pathogen that causes infections in humans?
What is the name of the common opportunistic pathogen that causes infections in humans?
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What is the name of the test used to diagnose fungal infections, involving scraping a colony onto a slide and adding KOH?
What is the name of the test used to diagnose fungal infections, involving scraping a colony onto a slide and adding KOH?
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What is the characteristic feature of the cell wall of fungi that is similar to that of arthropods?
What is the characteristic feature of the cell wall of fungi that is similar to that of arthropods?
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What is the phylum of fungi that includes Saccharomycotina, Taphrinomycotina, and Pezizomycotina?
What is the phylum of fungi that includes Saccharomycotina, Taphrinomycotina, and Pezizomycotina?
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What is the common symptom of Candida albicans infection in the bloodstream?
What is the common symptom of Candida albicans infection in the bloodstream?
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What is the characteristic feature of the Taphrinomycotina subdivision of fungi?
What is the characteristic feature of the Taphrinomycotina subdivision of fungi?
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what is candida albicans? and under what division
what is candida albicans? and under what division
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what type of pathogen is C. albicans
what type of pathogen is C. albicans
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what are different infections caused by C. Albicans
what are different infections caused by C. Albicans
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what tests are used for C. albicans?
what tests are used for C. albicans?
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Study Notes
Introduction to Mycology
- Mycology is the study of fungi
- Mycoses is a fungal infection
Characteristics of Fungi
- Belong to Kingdom Fungi and Domain Eukarya
- Can be either unicellular or multicellular
- Heterotrophic, requiring oxygen to survive
- Stain gram-positive
- Cell wall is made of chitin and has a chitin layer with glycoproteins
- Unique features of the fungus cell wall include β-1,3 glucan cross overs and chitin cell wall
Ascomycota Phylum
- Has three major subdivisions: Saccharomycotina, Taphrinomycotina, and Pezizomycotina
- Saccharomycotina: unicellular yeast that reproduces by asexual budding, with a cell wall made of chitin
- Taphrinomycotina: multicellular hyphae that reproduces by sexual spores
- Pezizomycotina: multicellular hyphae that reproduces by sexual fission or asexual spores
Fungal Infections
- Caused by opportunistic pathogens, such as Candida albicans
- Most common infection caused by Saccharomycotina
- Candida albicans can cause:
- Oral thrush: overgrowth of C. albicans on the tongue, resulting in white spots down the throat
- Vaginal thrush: overgrowth of C. albicans in the vaginal tract, resulting in thick white discharge and painful urination
- Systemic infections: symptoms include fever, chills, skin rash, low blood pressure, abdominal pain, headaches, and muscle aches
Diagnosis
- Sabouraud agar is used for fungi infections only
- Agar dish should be tapped up
- KOH test: scrape a colony onto a slide, add a few drops of KOH, and heat to speed up reaction
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Description
Test your knowledge of fungi, including their cell wall structures, mode of nutrition, and classification into different phyla. Learn about the unique features of fungal cell walls and the characteristics of Ascomycota phylum. Get ready to explore the world of mycology!