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1409 Biology Final
Test 3
| Question | Answer |
|---|---|
| The morphological definition of species is appropriate | when the evidence is fossils, when the organisms are Prokaryotic |
| Prezygotic reproductive barriers differ from postzygotic barriers in | When they act |
| Phyletic gradualism and punctuated equilibrium differ in | The speed with which new species arise (slow versus fast) |
| When a common ancestor gives rise to different species whose adaptations allow them to fill new or newly emptied ecological niches we call it | Adaptive radiation |
| What is the basis of cladistics? | Differences from ancestral characteristics, defined statistically |
| Reducing atmosphere | No atmospheric oxygen but lots of H2, CH4, NH3, and H2O |
| No organisms | No organisms to metabolize away carbohydrates, proteins, and lipids |
| Miller’s experiment | Prebiotic simulation; amino acids generated from inorganic molecules |
| Role of Clays | Flat surfaces form templates, electrons are released, catalysis |
| Reverse transcriptase | Double-stranded DNA can be generated from single-stranded RNA |
| During the history of the earth, which event must have occurred first, and why? | Photosynthesis in prokaryotes, changing Earth’s atmosphere from reducing to oxidizing |
| Which is not a general characteristic of all primates (prosimians, simians, hominoids)? | Bipedal stance |
| The effect of agriculture on human evolution is | Important (freed from the necessity of foraging for food daily, humans could develop culture) |
| Though not included in our taxonomy of organisms, viruses are included in our study of organisms because viruses | Are obligate intracellular parasites and are pathogens (cause disease) in all types of cells |
| How does lytic infection differ from lysogenic infection? | Effect on host cell; destroyed for lytic infection, not destroyed for lysogenic |
| What effect do viruses generally have on plants? | Reduce yield |
| A prion, the causative agent of potato spindles, tuber disease, and (perhaps) hepatitis D in humans is | Naked RNA |
| Prokaryotic organisms are highly varied; therefore biologists classify them according to | Cell shape (bacillus, coccus, or spirillum) |
| Vertical transmission | Genes are acquired only from an ancestor |
| Transformation | Bacteria acquire new genes from the medium (environment) |
| Transduction | Virus acts as a vector for the transfer of new genes into a bacterium |
| Conjugation | New genes are transferred directly between bacteria via a sex pilus |
| How do members of domain Bacteria differ from members of domain Archaea? | Only Archaea have ribosomes like eukaryotes |
| How do bacteria and archaea differ from protists? | Only protists are eukaryotic |
| Algae are the plant-like protists. How do algae differ from plants? | None of these choices is correct |
| Slime molds are considered to be protists and not fungi because slime molds have or are in the wrong | Body (not multicellular) |
| Protozoa are the animal-like protists. How do protozoa differ from animals? | Protozoa are unicellular |
| What is the different between Plasmodium and plasmodium? | The genus that causes malaria is plasmodium |
Created by:
jhardwick02
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