front 1 Prokaryote | back 1 a member of the domain Bacteria or Archaea. The distinguishing features of prokaryotes is the cell lacks a membrane enclosed nucleus and cell compartmentalization; includes the cells from all members of the domains Bacteria and Archaea |
front 2 Eukaryote | back 2 a member of the domain Eukarya. The distinguishing feature of eukaryotes is cell compartmentalization, including a cell nucleus; eukaryotes include protists, fungi, plants and animals. |
front 3 Cyanobacteria | back 3 photosynthetic prokaryotes, originated approximately 3.5 bya, the
first |
front 4 Fossil | back 4 Any preserved remains, imporession, or trace of any once-living past geological age. Examples include bones, sheels, exoskeletons, and more |
front 5 Paleontologist | back 5 A scientist who studies fossils |
front 6 Sedimentary rocks | back 6 Common sedimentart rocks include sandstone, limestone and shale. Often start as sediments carried in rivers and deposited in lakes and oceans. |
front 7 Eon | back 7 A major division of geological time, divided into eras |
front 8 Era | back 8 a division of geological time that represents the major stages in the macroscopic fossil record. Eras are separated by catastrophic extinction boundaries. |
front 9 Period | back 9 a sub-division of an era |
front 10 Extinction | back 10 The end of the existence of a species or a group of species |
front 11 Continental drift | back 11 The process by which, over the course of billions of years, the major landmasses, known as the continents, have shifted there positions, changed their shapes, and in some cases, become separated from each other. |
front 12 P-T boundary | back 12 The Permian-Triassic extinction event ((“the Great Dying”, “End
Permian |
front 13 K-T extinction event | back 13 a mass extinction that destroyed a majority of world's Mesozoic species, including all dinosaurs except for birds. Strong evidence exitst that the extinction coincided with a large meteorite impact at the Chicxulub crater and generally accepted scientific theory is that this impact triggered the extinction event. |
front 14 Stromatolite | back 14 A layered calcium carbonate structure generally produced by cyanobacteria living in an aquatic environment |
front 15 Heterotroph | back 15 Organisms that cannot produce their own organic molecules by using energy from inorganic sources or light, they must obtain on one or more organic compounds from their environment |
front 16 Autotroph | back 16 An organism that has metabolic pathways that use energy from either nonorganic molecules or light to make organic molecules. |
front 17 Photosynthesis | back 17 processes where by light energy is captrued by plant, algal, or photosynthetic bacteria cells and is used to synthesize organic molecules from CO2 and H2O |
front 18 Endosymbiosis theory | back 18 A theory that mitochondria and chloroplasts orginated from bacteria that took up residence within primordial eukaryotic cells |
front 19 Mitochondria | back 19 semiautonomous organelles found in eukaryotic cells that supply most
of |
front 20 Chloroplasts | back 20 semiautonomous organelles found in plant and algal cells tht cary out |
front 21 Multicellularity | back 21 describes organisms consisting of more than one cell, particularly
when |
front 22 Cambrian explosion | back 22 An event during the Cambrain Period (543-490 mya)in which
there |
front 23 Pangea | back 23 a supercontinent that existed in the late Paleozoic to early Mesozoic eras. |
front 24 Phylogenetic tree | back 24 diagram that describes the hypothesized evolutionary relationships
among various species, based on information available to
and |
front 25 Primate | back 25 an order of mammals characterized that arose 85-55 mya characterized
by |