Biology Test Protists
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Created by:
joshedwards28 on January 26, 2013
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Description:
Bricker Biology 1/26/2013
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31 terms
Terms | Definitions |
|---|---|
 What is Protozoa? | animal like protists |
| Diseases caused by Protozoa (5) | Malarya Giardia Trypanasoma Leishmania Entamoeba |
| Describe Malarya | caused by a protist called plasmodium vector: mosquito symptoms- high fever, chills *plasmodium will initially infect liver, and then the red blood cells |
| Describe Giardia | causes giardiasis (beaver fever) comes from consuming in contaminated food or water vector: lives in intestinal tract of beaver, beaver poops in water, and then is consumed by a human symptoms- diahrrea, vomiting |
| Describe Trypanasoma | causes African sleeping sickness vector: tsetse fly symptoms: high fever, chills, end up in a coma, die |
| Describe Leishmania | causes leishmaniasis vector: sand fly causes disfiguring skin sores on body |
| Describe entoamoeba | causes amebic dysentery lives in amoeb a intestines consumed in water damages intestine walls, causes nternal bleeding |
| What is a vector? | an organism that carries the disease |
| Tell how an Amoeba obtains food | After phagocytosis, amoeba moes toward food as psuedopod forms an outward pocket, traps particle membrane encloses around food food is placed in food vacuole |
| Tell Amoeba exocytosis | amoeba removes waste products too large to pass by exocytosis moves to cell membrane membrane and waste product fuse together membrane breaks open and waste is releases |
| What is the nucleus' job? | contols all cell functions |
| What is contractile vacuoles' job? | pumps out excess water, and regulates turgor pressure |
| Describe Amoeboid Movement | ectoplasm and endoplasm begin to flow pushes against the cell membrane in the direction the amoeba wants to move pushing the membrane outward to form a psuedopod |
| What does psuedopod mean? | false, foot//due to the fact that the foot can be anywhere on the cell |
| Describe Ectoplasm | really thin, more fluid |
| Describe Endoplasm | dense, very thick, makes up rest of the inside amoeba |
| How does an amoeba reproduce? | reproduces asexually, by binary fission |
| What is a cyst? | Forms on an amoeba; protects outside of amoeba, when unfavorable conditions occur (high heat, too cold, no water |
| What is irritablility? | chracteristics of ectoplasm and endooplasm, that allows amoebas to respond ot environment |
| Tell amoebas preferences | amoebas can move toward certain chemicals, away from high heat or extreme cold, does not like light |
| How does a paramecium obtain food? | Cillia lining beats back and forth water comes in oral groove, through mouth pore and down gullet food is placed in vacuole for digestion excess water is pumped out |
| What is a radiating canal or contractile vacuoles' jobs? | helps pull more water out of endoplasm, whatever can not be digested is pumped out of anal pore |
| What is a macronucleus? | controls all cell funtions |
| What is a micronucleus? | only functions during reproduction |
| What is a trychocyst? | coiled fiber inside, used as defense mechanism *if predator came into contact, it would kill the predator |
| How does paramecium reproduce? | asexually; by binary fission. step1: micronucleus divides by meiosis step2: micronucleus divides, has 4 cells, each cell with haploid chromosome number step3: 3 micronuclei will disintegrate, remaining will divide through mitosis-then has 2 micronuclei each haploid step4:2 paramecia join at oral groove and exchange a micronucleus--2 micronuclei join and macronucleus disintegrates and new micro forms from macro |
| What is conjugation? | allows for genetic variation among offspring |
| What form is chemical waste products stored in? | crystals |
| How does vorticella reproduce? | fission |
| What are three methods of movement? | flagellates amoeboids cilliates |
| What causes euglenoids to lose their chloroplasts? | high temperatures antibiotics uv light |
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