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MIC 541-Exam 5-Mycology 9
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Where are Fungi found in nature?
Ubiquitous
Are most fungi detrimental or beneficial?
Beneficial
What are examples of the usefulness of fungi?
Degrade organic debris
Breads/cheese
Beer/wine
Pharmacological agents
What other group of organisms do Fungi have the most in common with?
Animals
What characteristics do fungi share with animals?
Eukaryotic
Heterotrophic
What type of cells do fungi have?
Eukaryotic
What type of metabolism do Fungi have?
Heterotrophic
Define fungus:
A heterotrophic, eukaryotic organism that does not contain chlorophyll
Obtains food by absorption
Reproduces via spores
What is the primary carbohydrate storage molecule of fungi?
Glycogen
Describe the morphology of a fungus:
Thalus composed of hyphae that elongate from the tip
Describe the diversity of fungi:
Second most diverse group (second to insects)
When did fungi first appear on earth?
~1 billion years ago
Before vascular plants and animals
What percent of plant diseases are fungi?
70%
How many species of fungi exist?
80,000 currently
1,700 new per year
Do fungi have locomotion structures?
No
What do fungi have in their cell membranes?
Sterols
Do fungi have adherence structures?
Few
How many species of fungi are associated with human diseases?
300 species
What are normal flora fungi?
Candida
Malassezia
Where are pathogenic fungi found?
In the environment
Do fungi have cell walls?
Yes
What are the cell walls of fungi made of?
Chitin
What is Chitin?
The cell wall component of Fungi made of a NAG polymers
Do fungi have capsules?
Sometimes
What are capsules for fungi made of?
Polysaccharide (mannans and glucans)
Complexed with proteins
What are the two classifications of Fungi?
Yeasts
Molds
What is the shape of a yeast cell?
Round or oval/Single celled
What is the shape of a mold cell?
Filamentous/multicellular
How do molds reproduce?
Sexually and asexually via spores
What is a mass of mold filiments called?
Mycelium
Wht is a mycelium?
A mass of mold filiments
What is a dimorphic fungi?
One that can exist as a mold or a yeast
What temperature do dimorphic fungi grow at in hyphae form?
25 degrees C
What temperature do dimorphic fungi grow at in yeasts form?
37 degrees C
What examples of dimorphic fungi were given in class?
Blastomyces
Coccidiodes
Histoplasma
What type of fungi are Blastomyces, Coccidomyces and Histoplasma?
Dimorphic yeast
What are the four methods of reproduction for fungi?
Fission
Budding
Fragmentation
Spore formation
What is the method reproduction for molds?
Spore formation
What is the main method of reproduction for yeasts?
Budding
What is fragmentation?
A method of reproduction for a hypha, where the hyphae breaks apart
Is pathogenicity of fungi a necessity for maintenance?
No, pathogenicity is not needed for most fungi
Author
kyleannkelsey
ID
218547
Card Set
MIC 541-Exam 5-Mycology 9
Description
MIC 541-Exam 5-Mycology 9
Updated
5/8/2013, 2:53:44 PM
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