General Mycology Flashcards
What are 6 differences between bacteria and fungi?
BacT/Fungi
No mitochondria / Have mictochondrai
Multiply via binary fission (asexual) / Both binary/sexual replication
Typical cell walls w/ petidoglycan, LPS, lipid bilayers / walls contain chitin, chitosan, mannans and glucans, more plant like
Usually do not contain sterols / contain sterols
Susceptible to classical antibiotics / NOT susceptible to classical antibiotics
__________ and __________ are the two common sterols fungi contain in the cell wall
ergosterol, zymosterol
T/F Fungi, like mammalian cells contain large amounts of cholesterol in their cell wall
FALSE- they do not contain cholesterols
What are the three types of fungi?
saprophytic, symbiotic, parasitic
T/F several fungi contain cholrophyll and therefore can manufacture their own food.
FALSE- they lack chlorophyll and can not do these things
T/F Identification of fungi is very different than bacteria… Explain your answer
TRUE- ID primarily by gross and microscopic visual means, color of colonies, size, arrangement, and structure of their spores, reproductive structures
__________ and __________ are the two different forms we see fungi
Yeast anf Molds
__________ is the simplest of the fungi
Yeast
Yeast reproduce via __________
budding
__________ is used to describe chanins of yeast cells that enlongate and look like filaments or hyphae
pseudohyphae
Molds reproduce via __________
spores
__________ enlogates to form hypha and long filaments
germ tube
Filaments branch and may or may not from septa, which divide into __________ or __________ cells
uninucleated or multinucelated
If septa do not from during mold reproduction the hyphae are said to __________
coenocytic
with continued growth in a colony called a __________ forms
mycelium
__________ __________ penetrate down into medium
vegetative hyphae
__________ __________ are above the medium
aerial hyphae
__________ __________ develop from aerial hyphae
reproductive hyphae
__________ __________ have both a yeast phase and a mold phase
dimorphic fungi
__________ is the much more common from of reproduction
asexual
What are the more common forms of asexual reproduction?
Budding; formation of a variety of spore types
__________ involves the union of gametes
Sexual reproduction
When possible, identification of the fungi is usually done on the __________ stage of the organism
sexual reproduction
Sexual reproduction forms of fungi are referred to as __________
perfect state
Asexual reproduction phase referred to as __________
imperfect state
What are the 2 groups of the kingdom Mycetae
Aspetate mycelia adn Septate mycelia
What are the distinguishing features of the aseptate mycelia?
composed of members with primitive; branching non-septate hyphae, some cause deep mycoses
__________ get their name from the fromation of a sexual stage called the ascus
Asomycota
Within the ascus a number of __________ from and are encased by the wall of the ascus
ascospores
__________ are mostly non-pathogenic and composed of mushrooms, toadstools, smuts and rusts of plants
Basidomycota
__________ are fungo for which a sexual stage ahas not been found
Deuteromycetes or Fungi IMperfecta
__________ is the simple standard medium used to grow various fungi
SGA- sabourauds glucose agar
