Chpt 12
Order by
53 terms
Terms | Definitions |
|---|---|
 Mycology | Study of fungi |
| Anal pore | Opening near the back end |
| Cytosome | Mouth-like opening (ingestion) |
| Contractile vacuole | Pumps access water out of cell |
| Characteristics shared by all Protozoa | Unicellular, lack cell wall & eukaryotics |
| Protozoa are motile | Cilia, flagella & pseudopia |
| Sexual spore | Formed by fusion of nuclei of opposite mating, strains of same species of mold |
| Food Vacuole | Digestion |
| Common characteristics of 3 types of fungi | Eukaryotic, have cell wall, composed of polysacharide called chitin, chemoheterotrophs |
| Types of fungi (spores) | Sponrangiospores (inside the sac) Chlaymdospores (inside the hyphae) Conidiospores (spores nott enclosed in a sac) |
| Protozoa | First animal cell like organisms |
| Saprobes | Obtain nutrients from dead organic matter i.e. mushrooms, pencillium, bread mold |
| Characteristic of mold | Multicellular, filamentous, aerobic (w/oxygen), reproduced by spore, asexual/sexual |
| Characteristic of yeast | Unicellular, oval, anaerobic (w/without oxygen), reproduce by budding |
| What are Hyphae's that molds are composed of | Septate hyphae - divided into cells by crosswall Aseptate hyphae - no septum, aka coenocytic (multi-nucleated) |
| Dimorphic fungi | Shows two forms of growth mold & yeast |
| Ex. Dimorphic pathogenic fungi | Candida albicans, coccideodesimmitis (valley fever), hisplasma capsulation (lung infection) |
| Mycelium | Mass of hyphae (growth is on petri dish) |
| What two forms of growth does Dimorphic fungi show | Mold (tube) & yeast (oval) |
| What does mold & yeast need to grow | Tempature, oxygen & many pathogenic fungi |
| What are molds composed of | Hyphae - mold filaments |
| Growth requirement of fungi over bacteria | Acidic pH, tolerates salt/sugar concentrations, high osmotic pressure, requires less nitogent for growth |
| Classification of fungi into two divisions is based on | Type of asexual spores they produce & hyphae |
| Clamydospores | Spore formed inside the hyphae |
| Fungi are parasitic | Obtain nutrients from other living organisms, plants, animals & humans |
| Sponrangiospores | Spore formed inside the sac |
| Conidiospores | Spores formed not enclosed |
| Mycoses | Fungal disease |
| Asexual spores | Formed by hyphae of one organism through mitosis and cell division |
| Three types of fungi | Yeast, mold & mushrooms |
| Cyst | Resting place for Protozoa (parasitic intestinal protozoa) purpose protection |
| Freeliving Protozoa | Ingestion |
| Parasitic Protozoa | Absorb nutrients from other living matter |
| Trophozoite | Motile feeding stage (vegative) |
| Dinoflagellates & Euglenoids are | Photoautotrophs (perform photosynethsis) |
| Protozoa are chemoheterotrophs | Ingest and absorb nutrients |
| Two nucleis found in some Protozoa | Micronucleus & macronucleus |
| Protozoa structure Pellicle | Lack cell wall, envelope surrounds cell membrane |
| Conjugation | Sexual reproduction fusion with similiar gametes with untion of their nuclei |
| Disease of GI Protozoa | Giardiasis - Giardia, Amoebiasis - Entamoeby histolytic & cryptosporidiasis - sytosporidium |
| Disease of the blood Protozoa | Malaria - (caused by plasmodium) |
| PSP - Paratytic shellfish poisoning & Neurotoxin - secreted by dinoflagellate protozoa | Food intoxication of Protozoa |
| Naegleria fowlerii & Americal sleeping sickness - Chaga's | Diseases with nervous system Protozoa |
| Helminths | Worm like parasites, egg & larve, infectous to humans & animals i.e. flukes, tapeworm and roundworm |
| Helminths characteristics | Multicellular animals, freeliving & parasites, circulatory digestive, nervous, multiple host & produce by egg, larve & adult worms |
| Ex: of Helminths | Flatworms, tapeworm, flukes, roundworm, hookworm & pinworm |
| Arthropod Vector | Ticks, mites, fleas, lice, true flies & mosquitoes |
| Characteristics of arthropods | Jointed legs, segmented body covered in exskeleton, & transmission of diseases |
| Biological Vectors | Infected with pathogen, reproduces inside arthropod & transmitted to another host through bite with arthropod |
| Mechanical Vector | Carry pathogen on their external body parts, wings & leggs & transmit to another host |
| Vector borne diseases | Transmitted to humans or other animals by insect or arthropod |
| Ex: of Vector borne diseases | Mosiquito (B) - malaria & West niles virus, ticks - lyme disease & house fly - transmitts, tyhoid, & jauntis |
| Protozoa Reproduction | Asexual reproduction - binary fission (separation of body into two) & schizogony (multiple fission) |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.