Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
ECBModule3
SG Questions
| Question | Answer |
|---|---|
| Pseudopod | A temporary, foot-like extension of a cell, used for locomotion or engulfing food |
| Nucleus | The region of a eukaryotic cell which contains the DNA |
| Vacuole | a membrane bound "sac" within a cell |
| Ectoplasm | The thin, watery cytoplasm near the plasma membrane of some cells |
| Flagellate | A protozoan that propels itself with a flagellum |
| Pellicle | A firm, flexible coating outside the plasma membrane |
| Chlorophyll | A pigment necessary for photosynthesis |
| Chloroplast | An organelle containing chlorophyll for photosyntesis |
| Eyespot | a light-sensitive region in certain protozoa |
| Symbiosis | Two or more organisms of different species living together so that each benefits from the other |
| Cilia | Numerous short extensions of the plasma membrane used for locomotion |
| Spore | A reproductive cell with a hard, protective coating |
| Plankton | Tiny organisms that float in the water |
| Zooplankton | Tiny floating organisms that are either small animals or protozoa |
| Phytoplankton | Tiny floating photosynthetic organisms, primarily algae |
| Thallus | The body of a plant-like organism that is not divided into leaves, roots or stems |
| Cellulose | A substance made of sugars. It is common in the cell walls of many organisms. |
| Holdfast | A special structure used by an organism to anchor itself |
| Sessile Colony | A colony that uses holdfasts to anchor itself to an object |
| 3. Which of th following genera contain organisms with chloroplasts? Amoeba, Euglena, Paramecium, Spriogyra | Euglena and Spirogyra. Each of these organisms use cholorophyll for photosynthesis and thus have cholorolasts. The other two genera contain exclusively heterotrophic organisms, which obviously do not use photosynthesis. |
| 4. What is the function of a contractile vacuole? What is the difference between this and a food vacuole? | A contractile vacuole collects excess water in a cell and pumps it out to reduce the pressure inside the cell. This keeps the cell from exploding. The food vacuole, on the other hand, stores food while it is being digested. |
| 5. What is the difference between endoplasm and ectoplasm? | Endoplasm is thick while ectoplasm is thin and watery. Endoplasm is found in the central region of the cell while ectoplasm is found near the plasma membrane. |
| 6. The amoeba uses pseudopods which it creates by deforming its body. | The amoeba uses pseudopods which it creates by deforming its body. There is one bit of similarity. When it wants to move quickly, the euglena deforms its body in an almost earthworm-type motion. |
| 7. Name at least three pathogenic organisms from kingdom Protista. | There are more than three, but you only need to recall three. Entamoeba histolytica, Trypanosoma, Balantidium coli, Plasmodium, Toxoplasma. |
| 8. For each of the phyla below, list the means of locomotion employed by the organiisms in that phyla: Sarcodina, Mastigophora, Ciliophora | Sarcodina: pseudopods, Mostigophora: flagella, Ciliophora: cilia. |
| 9. What are the main features that separate organisms into phylum Sporozoa? | These organisms form spores as a natural part of their life cycle and have no real means of locomotion. |
| 10. A tapeworm is a parasite that feeds on the nutrients which the host eats, depriving the host of that nutrition. Trichonympha is a mastigophorite that lives in the gut of a termite, helping break down chemicals. Which is an example of symbiosis? | Trichonympha is an example of symbiosis because both the Trichonympha and the termite benefit from the situation. In the case of the tapeworm, only the tapeworm benefits. The host is hurt by the situation. |
| 11. Why do the ciliates have two nuclei? What is the purpose of each? | Ciliates require so much energy that they must have a nucleus devoted solely to metabolism. The other, smaller nucleus controls reproduction. |
| 12. What is the difference between the conjugation that occurs between paramecia and the conjugation that occurs between bacteria? | In conjugation between paramecia, there is a mutual exchange of DNA so that each paramecium gets new DNA. We learned in Module2 that when bacteria conjugate, only one bacterium (the recipient) gets new DNA. |
| 14. What is unique about the way a euglena obtains food? | A euglena can either live on the dead remains of other organisms or it can produce its own food by photosynthesis. This combination of autotrophic and heterotrophic behavior is rather unique in God's own creation. |
| 16. Give the main function of each organelles to follow and give at least one phylum that has organisms which possess the organelle. a. Food Vacuole | Food Vacuole-purpose: store food, phyla: Sarcodina, Mastigophora, Ciliophora |
| 16b. Contractile cacuole | Contractile vacuole-purpose: remove excess water, reducing pressure, phyla: Sarcodina, Mastigophora, Ciliophora |
| 16c. Flagellum | purpose: locomotion, phylum: Mastigophora, Prophyta |
| 16d. Pellicle | purpose: retains cell shape, phyla: Mastigophora, Ciliophora |
| 16e. Chloroplast | purpose: stores chlorophyll, phylum: Chlorophyta or Mastigophora |
| 16f. Eyespot | purpose: detects light, phylum: Mastigophora |
| 16g. Cilia | purpose: locomotion, phylum: Ciliophora |
| 16h. Nucleus | purpose: contains DNA, phyla: all phyla in Protista |
| 16i. Oral groove | purpose: food intake and conjugation, phylum: Ciliophora |
| 17. What are large deposits of diatom remains called? List two deposits. | These deposits are called diatomaceous earth and are used as abrasives and filters. |
| 18.What is a red tide? | A red tide is an algae bloom of dinoflagellates, which belong to phylum Pyrrophyta. |
| 19. What two substance phyla principally contain macroscopic algae? | Phaeophyta and Rhodophyta |
| 20. What substance produced by members of phylum Phaeophyta is useful for thickening ice cream, pudding, salad dressing and jelly beans? | Members of phylum Phaeophyta have alginic acid or just algin in their cell walls. This is the thickening agent used in the foods listed. |
Created by:
biowolf2013
Popular Biology sets