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23 Cards in this Set
- Front
- Back
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Atoms
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fundamental building blocks of all substances
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Molecules
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consisting of two or more atoms
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Cell
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the smallest unit of life
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Organism
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an individual consisting of one or more cells
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Nature
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is everything in the universe expect what humans have manufactured
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Population
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individuals of the same species in the same area
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Community
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populations of all species in the same area
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Ecosystem
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a community and its environment
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Biosphere
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all regions of the Earth where organisms live
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Emergent Properties
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a characteristic of a system that does not appear in any of its component parts
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Energy
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the capacity to do work
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Nutrients
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atoms or molecules essential in growth and survival that an organism cannot make or itself
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Producers
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make their own food by acquiring energy and raw materials from the environment
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Consumers
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get energy by eating producers and other organisms
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Receptor
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a molecule or cellular structure that responds to a specific form of stimulation
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Homeostasis
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organisms use receptors to help keep conditions in their internal environment within ranges that their cells can tolerate
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DNA
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source of an individuals distinct features
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Genus
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a group of species that share unique features
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Species
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individuals that share one or more heritable traits and can interbreed
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Eurkaryotes
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are plants, animals, protists, and fungi
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Three domains
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bacteria, archaea, and eurkaryotes
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Evolution
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is a change in a line of descent
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Natural selection
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when a living cell adapts to survive and reproduce
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