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33 Cards in this Set
- Front
- Back
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Biosphere
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The entire portion of Earth inhabited by life; the sum of all the planet's ecosystem.
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Ecosystem
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All the organisms in a given area, along with the nonliving (abiotic) factors with which they interact; a biological community and its physical environment.
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Community
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An assemblage of all the organisms living together and potentially interacting in a particular area.
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Population
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A group of interacting individuals belonging to one species and living in the same geographic area.
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Organism
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An individual living thing, such as bacterium, fungus, protist, plant or animal.
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Organ System
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A group of organs that work together in performing vital body functions.
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Organ
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A structure consisting of several tissues adapted as a group to perform specific functions.
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Tissue
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A cooperative unit of many similar cells that perform a specific function within a multicellular organism.
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Cell
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A basic unit of living matter separated from its environment by a plasma membrane; the fundamental structural unit of live
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Organelle
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A structure with a specialized function within a cell.
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Molecule
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A group of two or more atoms held together by covalent bonds.
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Atom
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The smallest unit of matter that retains the properties of an element.
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Producer
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An organism that makes organic food molecules from CO2, H2O, and other inorganic raw materials; a plant, alga, or autotrophic bacterium.
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Consumer
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An organism that obtains its food by eating plants or by eating animals that have eaten plants.
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Decomposer
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An organism that derives its energy from organic wastes and dead organisms.
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Emergent Properties
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New properties that emerge with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases.
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System
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A more complex organization formed from a combination of components.
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Prokaryotic Cell
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A type of cell lacking a membrane-enclosed nucleus and other membrane-enclosed organelles; found only in the domains Bacteria and Archaea.
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Eukaryotic Cell
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A type of cell that has a membrane-enclosed nucleus and other membrane-enclosed organelles. All orgnaisms except bacteria and archaea are composed of eukaryotic cells.
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Species
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A group whose members possess similar anatomical characteristics and have the ability to interbreed.
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Taxonomy
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The branch of biology concerned with identifying, naming, and classifying species.
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Kingdom
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In classification, the broad taxonomic category above phylum or division.
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Domain
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A taxonomic category above the kingdom level. The three domains of live are Archaea, Bacteria, and Eukarya.
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Bacteria
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One of the two prokaryotic domains of life, the other being Archaea.
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Archaea
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One of the two prokaryotic domains of life, the other being Bacteria.
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Prokaryotes
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Orgnaisms with prokaryotic cells.
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Eukaryotes
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Organisms with eukaryotic cells.
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Eukarya
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The domain of eukaryotes, orgainisms made of eukaryotic cells; includes all of the protists, plants, fungi, and animals.
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Theory
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A widely accepted explanatory idea that is broad in scope and supported by a large body of evidence.
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Natural Selection
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Differential success in reproduction by differnet phenotypes resulting from interactions with the environment. Evolution occurs when natural selection produces changes in the relative frequencies of alleles in a population's gene pool.
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Evolutionary Adaptation
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An inherited characteristic that enhances an organism's ability to survive and reproduce in a particular environment.
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Hypothesis
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A tentative explanation a scientist proposes for a specific phenomenon that has been observed.
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Controlled Experiment
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A component of the process of science whereby a scientist carries out two parallel tests, and experimental test and a control test. The experimental test differs from the control by one factor, the variable.
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