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science vocab

Cells In biology,the smallest unit that can perform all life process;cells are covered by a membrane and contain DNA and cytoplasm.
DNA Deoxyribonucleic acid,a molecule that is present in all living cells and that contains the inherits and needs to live.
Stimulus Anything that causes a reaction or change in an organism or any part of an organism.
Sexual reproduction Reproduction in which the sex cells from two parents unite to produce offspring that share traits from both parents
Homeostasis The maintenance of a constant internal state in a changing environment.
Asexual reproductio Reproduction that does not involve the union of sex cells and in which one parent produces offspring that are genetically identical to the parent.
Evolution The process in which inherited characteristics within a population change over generations such that new species sometimes arise.
Mutation A change in the nucleotidebase sequence of a gene
Artificial selection The human pratice of breeding animals or plants that have certain desired traits
Adaption a characteristic that improves an individual's ability to survive to survive and reproduce in a particular enviornment
Natural selection The process by which individuals that are better adapted to there environment survive and reproduction more successfully than less-well-adapted individuals.
Extinction The death of every member of a species.
Variation The occurrence of hereditary or nonhereditary differences between different individuals of a population.
Fossil The trace or remains of an organism that lived long ago,most commonly preserved in sedimentary rock.
Fossil record The history of life in the geologic past as indicated by traces or remains of living things.
Geologic time scale The standard method used to divide earth's long natural history into manageable parts.
Species A group of organisms that are closely related and can mate to produce fertile offspring.
Eukarya In a modern taxonomic system,a domain made up of all Eukaryotes;this domain aligns with the traditional kingdoms pro
Created by: timaj.plag