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Micro Exam 2
Exam 2
| Term | Definition |
|---|---|
| Metabolism | Sum total of all cell actions |
| Anabolism | making/building - requires ATP |
| Catabolism | breaking down large molecules - creates ATP |
| Holozoic nutrition | animal-like |
| Holophytic nutrition | plant-like |
| Autotrophic | needs organic food source |
| Heterotrophic | needs inorganic food source |
| photosynthetic | needs light |
| chemosynthetic | needs chemicals |
| saprophyte | fungi - grows on dead or decaying organic matter |
| parasite | organism that grows in/on a living host |
| obligate parasite | must grow in/on a living hoste |
| facultative parasite | prefers to grow in/on living hose, but can grow elsewhere |
| example of obligate parasite | virus |
| types of culture media | 1. synthetic 2. empirical 3. living and 4. special |
| synthetic culture media | defined |
| empirical culture media | not defined - complex organic |
| living culture media | living tissue, animals, fertilized egg, et.c |
| special cultre media | selective and differential |
| selective media | only allows certain major groups of bacteria to grow (ie, Gm+ or Gm-; aerobic or anaerobic) |
| Psychrophile | must grow at ~ 10-15 C |
| Mesophile | must grow at ~ 25-37 C |
| Thermophile | must grow at ~ 50-60 C |
| Osmophiles | must grow in 4.5-6% NaCl solution |
| Halophiles | must grow in >10% NaCl solution |
| Chlamydia | spherical, obligate parasite, 6 life stages |
| Chlamydia psittoci | dried bird feces - causes pneumonia psittacosis |
| Chlamydia trachomatis | causes trachoma |
| Nongonococcal Urethritis | urethral discharge to fetal death, give tetracycline, sulfas, erythromycin in newborn's eyes (prevent inclusion conjunctivitis) |
| Lymphogranuloma Venereum | genital lesions, malaise, nausea, rash, pus-filled buboes - remove pus, tetracycline, sulfas, erythromycin - untreated leads to elephantiesis |
| Mycoplasma | smallest of all known free-living organisms, no cell walls (pleomorphic), sterols in membrane |
| Mycoplasma pneumoniae | pleomorphic, motile, anaerobic, causes tracheobronchitis (walking pneumonia), give erythromycin or tetracycline, no permanent immunity |
| Ureaplasma urealyticum | t-strain Mycoplasma, found in urine, pleomorphic, causes NGU, pain on urination, yellow mucoid discharge, give erythro or tetracycline |
| fomite | non-living contaminated object |
| pathogen | an organism that by its own nature can overcome host defenses and cause disease |
| Necessary for disease | 1. Pathogen, Opportunists, or non-Pathogen at injury, 2. Portal of Entry, 3. Virulence, 4. Critical # of cells, 5. Poor host defenses, 6. Bacerial Products |
| Agranular Leukocytes | Lymphocytes (B & T) and Monocytes |
| Granular Leukocytes | Basophiles, Eosinophiles, & Neutrophiles |
| B-cells | antibody production |
| T-cells | phagocytosis |
| Monocyte | Macrophage in tissue, kidney bean shaped nucleus, AB carrier, forms fibroblasts for wound repair |
| Basophile | S-shaped nucleus, phagocytic, anti-clotting, granules=enzymes, histamine & heparin |
| Eosinophile | U-shaped nucleus, phagocytic againsts worms & fungi |
| Neutrophiles | PMN (polymorphonucleated), phagocytic |
Created by:
naomisg
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