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Bio101 Chpt 1

Campbell Biology101 Chapter 1 Biology: Exploring Life

Biology The scientific study of life.
Biosphere All of the environments on Earth that support life.
Ecosystem Consists of all the organisms living in a particular area.
Community An assemblage of all the organisms living together and potentially interacting in a particular area.
Population A group of individuals belonging to one species and living in the same geographic area.
Organism An individual living thing.
Organ system A group of organs that work together in performing vital body functions.
Organ Is made up of several different tissues, each made up of a group of similar cells that perform a specific function.
Tissues An integrated group of cells with a common function, structure, or both.
Cell Basic unit of life.
Organelle A membrane enclosed structure that performs a specific function in a cell.
Molecule A cluster of small chemical units called atoms held together by chemical bonds.
Emergent Properties New properties that arise with each step upward i the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases.
Prokaryotic cells A type of cell lacking a membrane enclosed nucleus and other membrane enclosed organelles; found in the domains of Bacteria and Archaea.
Eukaryotic cell A type of cell that has a membrane enclosed nucleus and other membrane enclosed organelles.
Systems Biology The study of interactions among the parts.
Consumers Are things that eat plants and other animals.
Producers Plants that provide food for a typical ecosystem.
Genes The units of inheritance that transmit information form parents to offspring.
Domains Above the kingdom level; consists of Archaea, Bacteria, and Eukarya.
Bacteria One of two prokaryotic domains of life.
Archaea One of two prokaryotic domains of life.
Eukarya A domain that consists of four kingdoms; Protists, Plantae, Fungi, and Animalia.
Evolution Species living today are descendants of ancestral species.
Natural Selection Population with varied inherited traits; elimination of individuals with certain traits reproduction of survivors.
Inductive Reasoning This kind of reasoning derives generalizations from a large number of specific observations.
Hypothesis A proposed explanation for a set of observations.
Deductive Reasoning Logic flows from general premises tot he specific results we should expect if the premises are true.
Theory Is broader in scope.
Controlled Experiment Designed to compare an experimental group with a controlled group.
Technology The application of scientific knowledge for a specific purpose.
Created by: dtgs2010