Biology 211 Unit 1 Test Questions And Answers Rated A+

A ____ is a shared, derived trait that only occurs in a certain _____ group. - Synapomorphy Monophyletic A law is a _____ ______. - Universal relationship According to natural selection, characteristics are ______. Certain characteristics increase ______, the ability to produce offspring. Certain individuals are better ______, hence natural selection. - Heritable Fitness Adapted Archaea is composed of what type of chain and bond? - Isoprene chain Esther bond Are bacteria and archaea unicellular or multicellular? Do they have organelles or a nucleus? - Unicellular No Are eukaryotes uni- or multicellular? - Both Bacteria is composed of what type of chain and bond? - Fatty acid chain Ester bond During the End Permian extinction, what percent of all species disappeared? - 90% During the End-Cretaceous extinction, _______ % of multicellular species disappeared. - 60-80During the End-Permian extinction, ______ added ___ and ____ to the atmosphere. _____ was released. The high atmospheric _____ trapped the _____ and caused ______ and ______ of oceans. The sea level dropped dramatically and terrestrial animals were restricted to ______ habitats. - Flood basalts CO2 SO2 Heat CO2 Heat Global warming Stratification Low-elevation Eukaryotes have a nucleus, _______ ______, and a _______ - Endomembrane system Cytoskeleton Examples of Cambrain fossils - Diverse, large, hard-parts Examples of Doushantuo microfossils - Tiny sponges and corals Examples of Ediacaran fossils - Soft-bodied Extreme acidophiles live at a pH _____. The picrophilus oshimae lives at a pH of ____. They are acidic enough to ______. - < 1.0 0.03 Dissolve metal Extreme halophiles are _____-lovers and live in _____ saturated with ______. They are found in the _____ and ______. They are also found in ______ for _____ production. - Salt Water SaltGreat Salt Lake Dead Sea Ponds Salt How did the end-Cretaceous extinction occur? - Impact hypothesis -Impact winter difficult for ectotherms - Collapse of photosynthesis affected vegetation and food chain How do fossils form? - Parts of an organism get buried in sediment How do prokaryotes reproduce? - Asexually by binary fission How many individuals of the first bird existed? How many fossils have been found so far? - 2 billion 10 Hyperthermophiles are ____-lovers. They live in _______ at _____ degrees Celsius. They are also found in ____. - Heat Hydrothermal vents 121 Geysers In what Eon did earth form? Life begin? - Hadean Archean Methanogens produce ______ in ______ and _______. They are ______ ______. Methanogens aid in the digestion of ______. - Methane Swamp SoilHerbivore guts Obligate anaerobes Cellulose Natural selection leads to ________. What does this mean? - Evolution of population A group of individuals of the same species living in the same area and same time Plankton are protists. What ecological role do they serve? - Base of many aquatic food chains Protists are eukaryotes. True or false? - TRUE Protists can be motile. What are three ways in which they can move? - Flagella, cilia, and pseudopodia Protists include all eukaryotes except.... - Land plants, fungi, animals