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Algal bloom
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Microbiology Ch. 12

The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

QuestionAnswer
Algal bloom an abundant growth of microscopic algae producing visible colonies in nature
Algin a sodium salt of mannuronic acid found in brown algae
Amoeba a unicellular eukaryote that moves by means of pseudopods
Anal pore a site certain protozoa used for elimination of waste
Anamorph ascomycete fungi that have lost the ability to reproduce sexually; the asexual stage of a fungus
Apicomplexa unicellular eukaryotes that are obligate intracellular parasites, posses a special organelle at the tip of the cell.
Archaezoa primitive, unicellular eukaryotes that lack mitochondria, i.e. Giardia
Arthrospore an asexual fungal spore formed by fragmentation of septate hyphae
Ascospore a sexual fungal spore produced in an ascus, formed by the ascomycetes
Ascus a saclike structure containing ascospores found in ascomycetes
Asexual spore a reproductive cell produced by mitosis and cell division (eukaryotes) or binary fission Basidiospore
Basidium a pedestal that produces basidiospores found in the basidomycetes
Blade a flat leaf like structure of multicellular algae
Blastoconidium a asexual fungal spore produced by budding from the parent cell
Budding yeast following mitosis a yeast cell that divides unevenly to produce a small cell (bud) from the parent cell
Chlamydospore an asexual fungal spore formed within a hypha
Ciliate a member of the protozoan phylum Ciliophora that uses cilia for locomotion
Coenocytic hypha a fungal filament that is not divided into uninucleated cell like units because it lacks septa
Conidiophore a aerial hypha bearing conidiospores
Conidiospore an asexual spore produced in a chain from a conidiophore, also conidium
Conjugation the transfer of genetic material from one cell to another involving cell to cell contact
Cutaneous mycosis a fungal infection of the epidermis, nails, or hair
Cyst a sac with a distinct wall containing fluid or other material; also a protective capsule of some protozoa
Cytoplasmic streaming the movement of cytoplasm in a eukaryotic cell
Cytostome a mouth like opening in some protozoan
Definitive host an organism that harbors the adult, sexually mature form of the parasite
Dermatophyte a fungus that causes a cutaneous mycosis
Dimorphism the property of having two forms of growth
Domoic acid intoxication diarrhea and memory loss caused by domoic acid, produced by diatoms
Encystment formation of a cyst
Eyespot a pigmented area in a cell capable of detecting the presence of light
Fission yeast following mitosis a yeast cell that divides evenly to produce two new cells
Gamete a male and female reproductive cell
Gametocyte a male and female protozoan cell
Hemoflagellate a parasitic flagellate found in the circulatory system of its host
Holdfast the branched base of an algal stipe
Hypha a long filament of cells in fungi or actinomyces
Intermediate host an organism that harbors the larval or asexual stage of a helminth or protozoan
Karyogamy fusion of the nuclei of two cells, occurs in the sexual stage of a fungal cell
Kelp multicellular brown algae
Keratin a protein found in epidermis, hair, and nails
Medulla a lichen body consisting of algae (or cyanobacterial) and fungi
Meiosis a eukaryotic cell replication process that results in cells with half the chromosomes number of the original cell
Merozoite a trophozoite of Plasmodium found in RBC’s or liver cells
Microsporiodia eukaryotic organisms that lack mitochondria and microtubules; obligate intracellular parasites
Mycelium a mass of long filaments of cells that branch and intertwine typically found in molds
Mycology the scientific study of fungi
Mycorrhiza a fungus growing in symbiosis with plant roots
Mycosis a fungal infection
Oocyst an encysted Apicomplexa zygote in which cell division occurs to form the next infectious stage
Opportunistic pathogen a microorganism that does not ordinarily cause disease but can become pathogenic under certain circumstances
Plankton free floating aquatic organisms
Plasmodium a multinucleated mass of protoplasm as in plasmodium slime molds and when written as a genus, refers to the causative agent of malaria
Plasmogamy fusion of the cytoplasm of two cells; occurs in the sexual stage of a fungal life cycle
Pseudohypha a short chain of fungal cells that result from the lacking of separating of daughters cells after budding
Pseudopod an extension of a eukaryotic cell that aids in locomotion and feeding
Red tide a bloom of planktonic dinoflagellates
Rhizine a root like hyphae that anchors a fungus to a surface
Rhizopoda eukaryotic organism that moves using pseudopods, i.e. amoebas
Ring stage a young Plasmodium trophozoite that looks like a ring in a RBC
Saxitoxin a neurotoxin produced by some dinoflagellates
Schizogony the process of multiple fission in which one organism divides to produce many daughter cells
Septa a cross wall in a fungal hypha
Septate hypha a hypha consisting of uninucleated cell like units
Sexual spore a spore formed by sexual reproduction
Slime mold a fungus like protest
Sporangiophore an aerial hypha supporting a sporangium
Sporangiospore an asexual fungal spore formed within a sporangium
Sporangium a sac containing one or more spores
Spore a reproductive structure formed by fungi and actinomyces
Sporozoite a trophozoite of Plasmodium found in mosquitoes infective for humans
Stipe a stemlike supporting structure of multicellular algae and basidiomycetes
Subcutaneous mycosis a fungal infection of tissue beneath the skin
Superficial mycosis a fungal infection localized in surface epidermal cells and along hair shafts
Systemic mycosis a fungal infection in deep tissue
Tachyzoite a rapidly growing trophozoite form of a protozoan
Telemorph the sexual stage in the life cycle of a fungus, also refers to a fungus that produces both sexual and asexual spores
Thallus the entire vegetative structure or body of a fungus, lichen, or alga
Trophozoite the vegetative form of a protozoan
Undulating membrane a highly modified flagellum on some protozoa
Vacuole an intracellular inclusion, in eukaryotic cells surrounded by a plasma membrane. In prokaryotic cells surrounded by a proteinaceous membrane
Vector 1. a plasmid or virus used in genetic engineering to insert genes into a cell. 2. an arthropod that carries disease causing organisms from host to another host
Vegetative referring to cells involved with obtaining nutrients, as opposed to reproduction
Yeast nonfilamentous, unicellular fungi
Yeast infection a disease caused by the growth of certain yeasts in a susceptible host
Zoospore an asexual algal spore, has two flagella
Zygosphore a sexual fungal spore characteristic of the zygomycetes
Zygote a diploid cell produced by the fusion of two haploid gametes
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