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Bio102 Test 1
Chapters: 19,20,21,22
| Question | Answer |
|---|---|
| Branch of biology concerned with identifying, describing, and naming organisms. | Taxonomy |
| The scientific name of an organism, the first part of which designates the genus and the second part of which designates the specific epithet. | Binomial nomenclature |
| Why are the scientific names in Latin? | The natural groups classification reflects the evolutionary history of organisms and the development of DNA sequencing helped create more accurate classifications. |
| List the classification Hierarchy | Domain Kingdom Phylum Class Order Family Genus Species |
| Which is the most inclusive and least inclusive of the classification hierarchy? | Most Inclusive: Domain Least Inclusive: Species |
| List the 3 domains and the four kingdoms in one of the domains. | Domains: Bacteria Archeae Eukarya: Plant Animal Protists Fungi |
| Traits that are found in a common ancestor and its descendants. | Ancestral traits |
| Structural, physiological, or behavioral trait that is present in a specific lineage and is not present in the common ancestor for several related lineages. | Derived traits |
| A diagram that indicates common ancestors and lines of descent among a group of organisms | Phylogenetic tree |
| A structure that is similar in different types of organisms because these organisms are from a common ancestor. | Homologous structure |
| Structure that has a similar function in separate lineages but differs in anatomy and ancestry. | Analogous structure |
| What three traits are used to categorize a virus? | Capsid: outer layer some enveloped by membrane; others naked Nucleic acid pore: DNA or RNA Shape: polyhedral, helical, spherical |
| What is an obligate intercellular parasite? | Viruses, which cannot replicate outside a living cell |
| What is a bacteriophage? | Viruses that infect bacterial cells |
| The virus takes over the operation of the bacterium immediately upon entering it and subsequently destroys the bacterium. | Lytic cycle |
| The virus incorporates its DNA into that of a bacterium; occurs preliminary to the lytic cycle | Lysogenic cycle |
| What are the five stages of the lytic cycle? | 1. Attachment 2. Penetration 3. Biosynthesis 4. Maturation 5. Release |
| Organism that lacks a membrane bound nucleus and the membranous organelles typical of eukaryotes. Movement by some type of flagella | Prokaryote |
| Extrachromosomal ring of accessory DNA in the cytoplasm of prokaryotes. | Plasmid |
| How do bacteria replicate? | Binary fission |
| Three methods of genetic recombination | 1. Conjugation 2. Transformation 3. Transduction |
| Three shapes of bacteria | Spirillum (spiral shaped) Bacilli (rod-shaped) Cocci (spherical) |
| Decomposers that break down organic matter from dead organisms | Saprotroph |
| What is another term for a parasite that causes a disease? | Pathogen |
| What type of bacteria is photoautotrophic? | Cyanobacteria |
| Three types of living conditions of archaea (extremophiles) | 1. Methanogens (obligate anaerobes) found in swamps, marshes, intestinal tracts 2. Halophiles: require high salt concentrations 3. Thermoacidophiles: thrive in extremely hot, acidic environments (hot springs, geysers, thermal vents, and volcanoes. |
| What type of green algae uses conjugation tubes? | Spirogyra |
| Used to make agar, capsules for vitamins, anti drying agent for baked goods, jellies, and desserts to set rapidly. | Red algae |
| Used filtering agents, sound proofing materials, and polishing abrasives such as those found in silver polish and toothpaste. | Diatoms |
| "Red tide". Causes massive fish kills, releases powerful neurotoxin (saxitoxin), can cause shellfish poisoning (respiratory paralysis) | Overgrowth of dinoflagellates |
| Micro-nucleus is used for in ciliates (paramecium)? | Reproduction |
| Macro-nucleus is used for in ciliates (paramecium)? | Metabolism |
| What organism is responsible for Malaria? | Plasmodium |
| What organism is responsible for Toxoplasmosis? | Toxoplasma (apicomplexan) |
| What organism is responsible for Vaginitis? | Parabasalids |