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Bio 1

Chapter 1

TermDefinition
Biology The scientific study of life
Life The set of common characteristics that distinguish living organisms from non-living matter.
Properties of Life Order, regulation, growth and development, energy utilization, response to the environment and the capacity to evolve over time
Biosphere The global ecosystem; the entire portion of Earth inhabited by life; all of life and where it lives
Ecosystem All the organisms in a given area, along with the nonliving (abiotic) factors with which they interact; a biological community and its physical environment
Prokaryotic Cell A type of cell lacking a nucleus and other organelles, found only in the the domains bacteria and archaea
Eukaryotic Cell A type of cell that has a membrane-enclosed nucleus and other membrane-enclosed organelles. All organisms are composed of this except bacteria and archaea
Genes A unit of inheritance in DNA (or RNA in some viruses) consisting of a specific nucleotide sequence that programs the amino acid sequence of a polypeptide
Natural Selection A process in which organisms with certain inherited characteristics are more likely to survive and reproduce than are organisms with other characteristics
Science Any method of learning about the natural world that follows the scientific method
Discovery Science The process of scientific inquiry that focuses on using observations to describe nature.
Scientific Method Scientific investigation involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to demonstrate the truth or falseness of the hypothesis and results that validate or modify the hypothesis
Hypothesis-Driven Science The process of scientific inquiry that uses the steps of the scientific method to answer questions about nature
Hypothesis A tentative explanation that a scientist proposes for a specific phenomenon that has been observed.
Controlled Experiment A component of the process of science whereby a scientist carries out two parallel tests, an experimental test and a control test.
Theory A widely accepted explanatory idea that is broad in scope and supported by a large body of evidence.
Created by: utscha