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Biology 1001 Chapter 1 Flashcards

biology 1001, biology, lsu, chapter 1

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1236636937adaptationA trait that helps an organism survive and reproduce.1
1236636938atomSmallest particle of an element2
1236636939autotrophAn organism that makes its own food3
1236636940binomial systemIdentifying organisms by their genus and species names4
1236636941biodiversityThe diversity of plant and animal life in a particular habitat (or in the world as a whole)5
1236636942biosphereConsists of all life on Earth and all parts of the Earth in which life exists, including land, water, and the atmosphere.6
1236636943cellBasic unit of life7
1236636944cell theoryidea that all living things are composed of cells, cells are the basic units of structure and function in living things, and new cells are produced from existing cells8
1236636945chromosomeA single piece of coiled DNA and associated proteins found in linear forms in the nucleus of eukaryotic cells and circular forms in the cytoplasm of prokaryotic cells; contains genes that encode traits. Each species has a characteristic number of chromosomes.9
1236636946communityA group of interdependent organisms inhabiting the same region and interacting with each other10
1236636947conclusionA summary based on evidence or facts11
1236636948controlIn an experiment, the standard that is used for comparison12
1236636949cytoplasmA jellylike fluid inside the cell in which the organelles are suspended13
1236636950deductive reasoningreasoning in which a conclusion is reached by stating a general principle and then applying that principle to a specific case (The sun rises every morning; therefore, the sun will rise on Tuesday morning.)14
1236636951deoxyribonucleic acid (DNA)A nucleic acid found in all living cells which carries the organism's hereditary information15
1236636952domainA taxonomic category above the kingdom level. The three domains are Archaea, Bacteria, and Eukarya.16
1236636953ecosystemA community of interdependent organisms and the physical environment they inhabit.17
1236636954elementA pure substance made of only one kind of atom18
1236636955energythe ability to do work19
1236636956eukaryoticA cell characterized by the presence of a nucleus and other membrane-bound organelles. Eukaryotes can be unicellular (protists) or multicellular (fungi, plants and animals).20
1236636957evolutionChange in a kind of organism over time; process by which modern organisms have descended from ancient organisms.21
1236636958experimentA research method in which an investigator manipulates one or more factors to observe the effect on some behavior or mental process22
1236636959geneA segment of DNA on a chromosome that codes for a specific trait23
1236636960heterotrophAn organism that obtains organic food molecules by eating other organisms or substances derived from them.24
1236636961homeostasisA tendency to maintain a balanced or constant internal state; the regulation of any aspect of body chemistry, such as blood glucose, around a particular level25
1236636962hypothesisA testable prediction, often implied by a theory.26
1236636963inductive reasoningA type of logic in which generalizations are based on a large number of specific observations.27
1236636964kingdomFirst and largest category used to classify organisms28
1236636965moleculeA group of atoms bonded together29
1236636966multicellularConsisting of many cells30
1236636967mutationA change in the order of the bases in an organism's DNA; deletion, insertion, or substitution.31
1236636968natural causalityall events can be traced to natural causes that are potentially within our ability to comprehend32
1236636969natural selectionA process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.33
1236636970nucleusControl center of the cell34
1236636971nutrientCompounds in food that the body requires for proper growth, maintenance, and functioning.35
1236636972observationIs the recording of data using scientific instruments; and refer to any data collected during an experiment. (Can use your sense)36
1236636973organA collection of tissues that carry out a specialized function of the body37
1236636974organ systemA group of organs that work together in performing vital body functions.38
1236636975organelleA tiny cell structure that carries out a specific function within the cell39
1236636976organic moleculeBodies of living things that are composed primarily of complex molecules40
1236636977organismA living thing; anything that can carry out life processes independently41
1236636978photosynthesisPlants use the sun's energy to convert water and carbon dioxide into sugars42
1236636979plasma membraneControls what enters and leaves the cell43
1236636980populationA group of organisms of the same species populating a given area44
1236636981predictionA logical statement about what will happen if the hypothesis is correct.45
1236636982prokaryoticAn organism whose cells do not have an enclosed nucleus, such as bacteria.46
1236636983questionA statement designed to get further information or to clarify information already received47
1236636984scientific methodA series of steps followed to solve problems including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions48
1236636985scientific theoryA well tested concept that explains a wide range of observations49
1236636986scientific theory of evolutionthe theory that modern organisms descended, with modification, from preexisting life-forms.50
1236636987speciesA group of similar organisms that can breed and produce fertile offspring.51
1236636988tissueA group of similar cells that perform the same function.52
1236636989unicellularMade of a single cell53
1236636990variableA factor that can change in an experiment54

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