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LC Biology chapter 2

characteristics of life

TermDefinition
characteristics of life biological organization nutrition excretion response reproduction
diversity of life (biodiversity) large variety of living organisms on earth
life organic-based object that possesses characteristics of metabolism and continuity of life
metabolism sum of all chemical reactions in an organism
continuity of life how cells arise from cells of the same type and organisms arise from organisms of the same type
biological organization levels of complexity in an organism cell->tissue->organ->organ system->organism->population->community->ecosystem->biosphere
nutrition how organisms obtain and use food
excretion getting rid of waste products of metabolism
diffusion movement of molecules from high concentration to low concentration
response how living organisms react to their environment
reproduction hoe new offspring is produced from their parent(s)
autotrophic nutrition organism makes its own food
heterotrophic nutrition organism gets its food from another living organism
homeostasis a relatively constant, self-correcting internal environment all organisms must maintain
4 macromolecules (molecules of life) nucleic acids (RNA, DNA) proteins carbohydrates lipids
Created by: Aine Murphy
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