Study guide-biology

Study guide-biology - Chapter One Key Terms Archaea-on of...

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Chapter One Key Terms Archaea -on of two prokaryotic domains, the other being bacteria Bacteria -one of two prokaryotic domains, the other being archaea biology -the scientific study of life biosphere -the entire prortion of earth inhabited by life; the sum of all the planet’s ecosystems cell -life’s fundamental unit of structure and function community- all the organisms that inhabit a particular area; an assemblage of populations of different species living close enough together for potential interaction consumer -organisms that feed on producers and other consumers controlled experiment -an experiment in which an experimental group is compared to a control group that varies only in the factor being tested deductive reasoning (if….then….)- a type of logic in which specific results are predicted from a general premise deoxyribonucleic acid (DNA)- a double-stranded, helical nucleic acid molecule capable of replicationg and determining the inherited structure of a cell’s proteins domain -a taxonomic category above the kingdom level. The three domains are archaea, bacteria, and eukarya domain Archaea domain Bacteria domain Eukarya
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ecosystem -consists of all the living things in a particular area, along with all the nonliving components of the environment with which life interacts emergent properties -new properties that emerge with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases eukaryotic cell -a type of cell with a membrane-enclosed nucleus and membrace-enclosed organelles. Organisms with eukaryotic cells are called eukaryotes. Gene- a discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA Genome- the complete complement of an organsism’s genes; an organism’s genetic material Hypothesis -a tentative answer to a well-framed question inductive reasoning -a type of logic in which generalizations are based on a large number of specific observations kingdom -a taxonomic category, the second broadest after domain kingdom Animalia kingdom Fungi kingdom Plantae negative feedback -a primary mechanism of homeostasis, whereby a change in a physiological variable that is being monitored triggers a response that counteracts the initialfluctuation organ -a specialized center of body function composed of several different types of tissues organ system -a group of organs that work together in performing vital body funcitons organelle -one of several formed bodies with specialized functions, suspended in the cytoplasm of eukaryotic cells
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organism -individual linving things population -a localized group of individuals that belong to the same biological species positive feedback -a physiological control mechanism in which a change in some variable triggers mechanisms that amplify the change producer -plants and other photosynthetic organisms that convert light energy to chemical energy prokaryotic cell -a type of cell lacking a membrane-enclosed nucleus and membrane-enclosed organelles
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This note was uploaded on 03/26/2008 for the course BIOL 111 taught by Professor Rizzo during the Fall '07 term at Texas A&M.

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Study guide-biology - Chapter One Key Terms Archaea-on of...

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