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H Biology Chapter 1

Chapter 1

QuestionAnswer
Cell The smallest living unit that can produce and survive on its own
population A species in an area together
community all different species living and interacting in the same area
ecosystem species and their physical environment
biosphere all parts of the Earth's crust, and waters where organisms live
DNA Deoxyribonucleic acid, carries the primary hereditary information for all living organisms and many viruses
metabolism all the controlled, enzyme-mediated reactions by which cells aquire and use energy to synthesize, store degrade, and eliminate substances
producers Autotroph; nourishes itself using sources of energy and carbon from the environment
consumers Heterotroph that obtains carbon and energy by feeding on other organisms
homeostasis maintenance of physical and chemical aspects of the internal environment within ranges suitable for cell activities
species one kind of organism
archaea evolutionarily distinct domain of prokaryotic organisms
bacteria the most widespread and diverse group of prokaryotic organisms
eukarya all protists, plants, fungi, and animals
plants a multicelled photoautotroph with a well developed root and shoots
fungi eurokaryotic heterotroph that obtains nutrients by extracellular degesstion and absorption
animals multicelled, motile heterotroph that has embryonic stages and visual tissues, organs, and organ systems
mutations heritable change in DNA
evolution genetic change in a line of descent. Outcome of microevolutionary events: gene mutation, natural selection, genetic drift, and gene flow
natural selection Microevolutionary process; the outcome of differences in survival and reproduction among individuals that differ in the details of their heritable traits
models theoretical description of something that has not been directly observed
mimicry close resemblance of one species to another; confers a selective advantage upon one or both species by decieving predators
Created by: lindsey63098
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