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Zoology
lecture 6, test 2
| Question | Answer |
|---|---|
| Protozoans- | 1 thing to keep in mind when talking about protozoans, they live and survive off of 1 cell. Have organs not organelles They can also kill you e.g. malaria |
| protozoans sexuality | b. asexual-exponential population growth e.g. many parasites do this and invade your body; sexual- experience meiotic division. |
| flagellum | single extension from cell but can be more than one, works like propeller in rotary fashion pushing cell forward e.g. human sperm |
| cilium | have many cilia, hundreds to thousands, adaptation for moving thru water. Work more like ores than propellers, move and rotate sideways e.g. turbellaria, snail, slug, mucus tract-things you swallow get passed out |
| ameoba | naked, mostly free living.bad if gets in your nose.eat in your pockets to point of death. Easier to get from standing, grungi water, mostly shallow b/c more concentrated: Entameba-gut parasite If finds way to water can contaminate some1 else so boil water |
| Modest amoeba | Calcium Carbonate CaCo3-secretes shell, foraminifera-have holes, when die, become rock; hard parts preserve to become fossil; can track their change thru time and climate, only marine |
| Radiolarians | -comprise tremendous amount of under area of marine, fossilized, abundant area in ocean |
| Heliozoans | Aquatic amoeba, gelatinous cover, nicknamed sun animalcule |
| Flagellates | -mostly free living with multiple flagella on one side. Hypermastigids-Biggest but not very fast. Mutualistic relationship with cellulose (paper is a sugar, you can eat) secrete the enzyme that break down cellulose, live in termites |
| Trypanosomes | entirely parasitic invertebrates, host specific, swim thru fluid they feed on. |
| Vector | spread from one animal to the other; spread by certain types. |
| tsetse fly | 2) When Europeans went to Africa already many sorts of cow, e.g. buffalo and rodesiants and gosedients (African sleeping sickness) -only females, nested in decayed vegetation - |
| Trypanosome cruzi. | 4) Wood rats catch many things and can catch________ . . . . |
| T. cruzi | Chagas’ disease-can get in America, threat is that it’s not picky what it will get into. It’s a grp of insects “bugs,” a group of them are called assassin bugs, “kissing.” |
| Giardia, Trichomonas | -gut parasite. -STD vaginal itching and guys pick it up but not symptomatic |
| j. Apicomplexans- | some complex lifecycles and some not, commonality-toward apex, penetrates into cell |
| pathogens | give bad reactions that make you sick e.g. bacteria, protozoans. You have handle on bacteria with antibiotic but not virus or fungi infection. Protozoans can be targeted with things that will kill it, e.g. lead |
Created by:
Jamie D
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