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Bio Rev Sem 2 Final
| Question | Answer |
|---|---|
| DNA | A=T, C=G, |
| RNA | A=U, |
| Nucleotides | different bases |
| Watson and Crick | figured out 3D structure of DNA |
| Replication | polymerase binds nucleotides together |
| Central Dogma | information flows from DNA to RNA to proteins |
| Codons | read in groups of 3 nucleotides |
| Exons | sections of mRNA that are spliced together |
| Adaptation | allows an organism to better survive in its environment |
| Population | all individuals of the same species in the same area |
| Vestigial structure | organ that had a function in an ancestor |
| Darwin | different finches lived on different islands |
| Natural Selection | organisms better adapted to an environment survive and reproduce, acts through heritable traits |
| Catastrophism | earthquakes and volcanoes occurred frequently in earth’s history |
| Endosymbiosis | bacteria move into a larger cell and live |
| Half | life |
| Primates | includes humans and animals with opposable thumbs |
| Population Density | number of living things per area of space |
| Population | increases with immigration and births |
| Density dependent factor | competition |
| Exponential growth graph | J shaped |
| Atmosphere | layer of air surrounding the earth |
| Canopy | upper most layer of branches in the rain forest |
| Graphs | comparing grasslands and forest biomes |
| Tropical zone | equator |
| Deciduous trees | lose their leaves |
| Population of the Earth | do not know carrying capacity |
| Renewable resources | can replenish themselves |
| World population graph | read and answer questions |
| Frogs | water soluble skin so they are affected by pollutants |
| Biodiversity | highest in tropical rainforest |
| Linnaean taxonomy | named and classified by physical characteristics |
| Clades | top of a cladogram |
| Domains | two |
| Binomial nomenclature | example |
| Classification | molecular evidence is most reliable |
| Prion | smallest infectious organism |
| Virus | genetic material is either RNA or DNA, |
| Capsid | made of proteins |
| Prophage | viral DNA connected to host DNA |
| Facultative anaerobe | survive with or without oxygen |
| Flagellum | whiplike structure for movement |
| Antibiotics | fight off bacteria |
| Binary fission | method of reproduction of prokaryotes |
| Protozoa | animal like protists |
| Dinoflagellates | 90% marine plankton |
| Chitin | make up cell walls of fungus |
| Red algae | help thicken ice cream |
| Budding | reproduction of yeasts |
| Chlorophyll | cause plants and some algae to be green |
| Mosses | most similar to first true plants |
| Coal | fossilized seedless vascular plants |
| Sugars | flow from roots to stems to leaves |
| Pollination | pollen moves from anther to stigma, flowers pollinated by animals |
| Dispersal | fruits with seeds eaten and discarded by animals |
| Dicots | 2 seed leaves |
| Perennials | wood plants |
| Sclerenchyma | strongest plant cells |
| Collenchyma | support for plant growth |
| Cohesion | results from hydrogen bonds between water molecules |
| Root cap | protective cells at tip of root |
| Transpiration | lowers pressure and pulls water upward |
| Pressure flow hypothesis | water enters phloem through osmosis |
| Ground tissue | most of the inside of the plant |
| Rings | one year growth |
| Stems | support, transport materials, and store food and water |
| Leaves | upper surface collects sunlight |
| Zygote | fertilized egg |
| Dormancy | embryo protected by seed coat |
| Auxin | decreased by cutting off tips causing growth of side branches |
| Gravitropism | root growing down, shoot growing up, growth response to gravity |
| Essays | Hershey and Chase, Darwin and natural selection, Linnaean classification, Anti |