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BI 411 Ch. 11
| Question | Answer |
|---|---|
| List 10 important characteristics of the unicellular eukaryotes. | 1.unicellular 2.mostly microscopic 3.no germ layer present 4.specialized organelles 5. pseudopodia,cilia,flagella 6.simple endo or exoskeleton 7.nutrition 8. aquatic or terrestrial habitat, free-living or symbiotic 9. reproduction 10.division of layers |
| What is a mutualistic relationship? | Both organisms benefit. |
| What is a commensalistic relationship? | One organism benefits while the other organism is not affected. |
| What is a parasitic relationship? | One organism benefits in expense of the other organism. |
| This structure of protozoa is larger and in control of cellular activities. | Macronucleus |
| This structure of protozoa is smaller and in control of reproduction. | micronucleus |
| This structure of protozoa is more transparent and has bases of cilia. | ectoplasm |
| This structure of protozoa is more granular and contains the nucleus. | endoplasm |
| Organisms that make their own food are | autotrophic |
| Organisms that obtain nutrition by synthesizing other organisms are | heterotrophic |
| These type of feeders ingest visible particles or food. | phagotrophic or holozoic feeders |
| These type of feeders ingest food in a soluble form. | osmotrophic or saprozoic feeders |
| This type of asexual reproduction is the splitting of cells into two new cells | binary fission |
| This type of asexual reproduction is where the division of the cytoplasm is preceded by several nuclear divisions so that many new cells are formed. | multiple fission |
| This type of asexual reproduction occurs if multiple fission is preceded by or associated with the union of gametes | |
| A type of sexual reproduction that involves fertilization of an individual gamete by another | Syngamy |
| A type of sexual reproduction where gametic nuclei arise by meiosis and fuse to form a zygote within the same organism that produced them | Autogamy |
| multiple asexual fission | schizogony |
| A type of sexual reproduction where the exchange of gametic nuclei occurs between paired organisms or conjugants | Conjugation |
| Reproduction in which the offspring arises as an outgrowth from the parent and is initially smaller than the parent. | budding |
| Any illness or disorder that can be recognized by a given set of signs and symptoms | disease |
| What is the vector for malaria? | mosquitos |
| The study of all factors that influence transmission, geographic distribution, incidence, and prevalence | epidemiology |
| What human disease may result from eating reef fishes that have a toxin that is produced by a dinoflagellate? | ciguatera |
| The first reasonable evidence for life on earth dates from approximately 3.5 billion years ago. These first cells were? | Prokaryotic, bacteria-like organisms |
| What are dormant forms marked by possession of resistant external coverings and almost a complete shutdown of metabolic activity? | Cysts |
| What are the conditions that initiate excystment? | Food deficiency, desiccation, increased environmental osmotic pressure, decreased oxygen concentration or change in pH or temperature. |
| A return of favorable conditions that initiates excystment is called what? | Excystation |
Created by:
gmoore730
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