STRUCTURE OF FUNGI Flashcards
protects the underlying protoplasm
CELL WALL
determines and maintains the shape of the fungi cell
CELL WALL
acts as an interface between the fungus and its environment
CELL WALL
acts as a binding site for some enzymes
CELL WALL
possesses antigenic properties
CELL WALL
CELL WALL COMPOSITION:
❖Chitin: “crunchy”; Carbohydrate and N-acetylglucosamine
❖Protein, glycoprotein, and lipids
❖B-glucan
External coating of the cell wall
CAPSULE
CAPSULE Composition:
amorphous polysaccharide
CAPSULE Function:
influence growth of fungus by preventing dissociation of buds and dispersion of yeasts
Protects the cytoplasm
CELL MEMBRANE
Regulation: solute intake and secretion
CELL MEMBRANE
Facilitates the synthesis of the cell wall and capsular material
CELL MEMBRANE
Contains ergosterol
CELL MEMBRANE
Site of action of amphotericin Band azoles
CELL MEMBRANE
CYTOPLASM:
Mitochondria, vacuoles, vesicles, microtubules etc.
bounded by nuclear envelop (2 membranes with pores)
NUCLEUS
contains usually 1 nucleolus consisting mostly of RNA
NUCLEUS
allows the interaction w/ other organisms
antigenic properties
fungal meningitis
Cryptococcus neoformans
“crunchy”; Carbohydrate
and N-acetylglucosamine
Chitin
site of action of caspofungin
B-glucan
(antifungal drug and belongs to a new class called the echinocandins)
caspofungin
target of some chemotherapeutic agents like nystatin
ergosterol
w/ true nucleus and nuclear membrane
Eukaryotic
unable to make food from inorganic cpmponents
Heterotrophic
can survive w/ or w/o oxygen
facultative anaerobic
contains usually 1 nucleolus consisting mostly of RNA (except for [?])
multinulceated muscles and nonnucleated RBCs & WBCs
