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53 Cards in this Set

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  • Back
mycology is the study of what????
fungi
the __________ grow as long ,tangled strands of cells that give rise to visible colonies.
molds
fungi lack chlorophyll,while plants have this pigment;the cellwalls of fungal cells contain a carbohydrate called ______________,not found in plant cells walls; though generally filamentous fungi are not truly multicellular like plants,because there_______of one fungle cell mingles through _______with the cytoplasm of adjacent cells.
chitin,cytoplasm,pores
And fungi are _________eukaryotes,while plants are ____________eukaryotes.
heterotrophic,autotrophic
In fungi there are over _______identifiable species
80,000
another group________,are uncellular organisms whose colonies resemble bacterial colonies.
yeasts
with the noteable exception of __________,fungi consist of masses of intertwined filaments of cells called __________.
yeasts,Hyphae
Each cell of a single hyphae is a eukaryote .with ________nuclei,as well as other ___________
1 or more,organelles.
the cell wall is composed of small amounts of cellulose and large amounts of __________(a polmer of acetylglucosamine units (amino and acetyl groups)).______alsois in the exoskeleton of arthropods.
chitin
organisms that feed on dead matter are called______________
saprobic
fungi are described as ________organisms,that is they consume freformed organic matter.
heterotrophic
in many species of fungi, individual cells are separated by cross-walls or __________.Such fungi are described as ________.
septa,septate
the _________have pores however and allow cytoplasm to mix.
septa
_________is the term for no crosswalls
asepta
a thick branch of hyhae is called ______
mycelium
the common bread mold is rhizopus stolonifer is _____________
coenocytic
the blue green mold that produces penecillin,penicillium cotatum is ________
septate
many fungi libe in a mutually beneficial relationship with other species that is called __________.
mutualism
most fungi grow best at about ________, a temperature close to normal room temp.
25*C
pathogenic fungi thrive at _______degrees C which is body temp
37
Some fungi have differennt forms at different temps (Yeastlike at 37C and moldlike at 25C)these fungi are called __________.
biphasic dimorphic
Normally a high doncentration of sugar is conducive to growth, and laboratory media for fungi ususually contain extra _________ in addition to an _________environment.An example is ______________.
glucose,acidic,sabourand dextrose agar
reproduction of fungi may take place by asexual processes as well as by a seual process.the principal structure of asexual reproductuion is the____________.
fruiting body
IN the asexual process Hyphae usually contain thousands of ___________.all resulting from _________divisions of a single cell and all genetically identical.
spores,miotic
Certain asexual spores develope in a sac called a _____________.and the spores are called _______
sporangium,sporangiospores
Other spores deveope on the supporting structure called conidiophores .these spores are known as _________>
conidiaspores,conidia
Some spores may form by fragmentation or the hyphae.This process yeilds ________.the fungi that cuses athletes foot multiply in this manner.
arthrospores
Another asexual process is called ___________.This is where the cell becomes swollen at one edge and a new cell called a________________,or ____,developes from the parent cell and breaks away free to live independently.
budding,blastospore,bud
Yeasts multiply by __________(_________).
budding ,blastospores
_____________are thick walled spores formed along the margin of the hypha,while ________develope at the tip of the hypha.
chlamydospores,oidia
many fungi also produce spores by a sexual process.In this process ,the cells of opposite mating types of fungi come together and fuse ,the mixing of chromosomes teporarily forms adouble set of chromosimes this is known as _______,eventually the chrom.number is halved,and the cell returns to single chrome. this is _____________.
diploid,haploid
in classification another name for division is _____
phyla
most fungi classified by ___________
their sexual reproduction
division I eumycota Means__________
true mold
the first division (_______)of fungi is ____________,a group of ___________that inhabit terrestrial environments.these have coenocytic hyphae,with septa where the reproductive cells are formed.sexual opposite hyphae fuse and a highly resistant_______ forms at the site.
phylum,,Zygomycota,zygomycetes ,zygosporangium
a well known member of the zygomycota is ______________rhizopus stolonifer.
commen bread mold
the bread mold has both __________and __________reproduction
asexual,sexual
all ascomycetes form in the ascocarp.a reprodutive structure called an ascus.an ascus is a ________in which upto 8haploid ascosporesform.
sac
Most af the ascomycetes also reproduce asexuallyby means of ______________produced in chains at the end of a conidiophore
condia
certain members of the ascomycetes are extremely beneficial.One example is the yeast _______________used in brewing and baking .
saccharomyces
____________which produces such products such as citric acid,soy sauce,and vinegar .
aspergillus
_________________,various species which produce the antibiotic,penecillinas wellas as roquefort.Morals are in this group
Penicillium
ascomycetes are also partners with _________.
lichens
many in the ascomycetes group are __________like the dutch elm disease.
harmful
_____________,are club fungi.These include the mushroom,plus smut fungi and rust fungi.
basiodiomycetes
certain fungi lack a known sexal cycle of reproduction and consequently are labeled with the term imperfect.these are in their own division called________.
deuteromycetes
the word _________refers to a large variety of unicellular fungi >
yeasts
Included in this group are non sporeforming yeasts of ___________,as well as sporforming .
deuteromycota
___________means sugar fungus ,this organism ferments sugars.
saccaromyces
the most commonly used species of Saccharomyces are ________and _________used for bread and alcohol making
Saccaromyces cervisiae, Saccharomyces ellipsoideus
the cytoplasm of Saccharomyces is rich in _________,
vitamen B
Saccharomyces are about _____long and ______wide.and they reproduce by budding but a sex cycle exists and in which an ascus is formed soclassified as an____________>
ascomycetes
saccharomycetes ___________is found in orchards.
ellipsoideus