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28 Cards in this Set
- Front
- Back
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Controlled experiment
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compares an experimental group with a control group
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Levels of organization
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Atom, Molecule, macromolecules, organells, Cell, Tissues, Organ, organ system, organism, species, population, commmunity, ecosystem, biosphere
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Ecosystem
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All the organisms living an a particular area, as well as the nonliving, physical components of the environment that affect the organism, such as air, soil, water, and sunlight.
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Community
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all organisms in an ecosystem
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Ecosystem
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all biotic factors
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population
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series in the same time + location that are interbreeding
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Species
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Organisms that can mate and produce fertile offspring
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Organism
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Living creature at least one cell big
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tissues
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a group of cells working together
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Cell
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smallest living unit
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Organells
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unit within a cell performing a given function
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Macromolecules
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protiens, fats, carbs
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Molecues
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2 or more atoms bonded
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atom
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smallest particle of matter retaining the characteristics of that element
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properties of living organisms
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Order, regulation, growth and development, Energy, Response to the environment, Reproduction, Evolution.
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Matter
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Matter is anything that has mass and volume. Matter, is in turn, composed of atoms
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What four elements make up 96% of the elements found in the human body
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Oxygen, Carbon, Hydrogen, Nitrogen
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Atom
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An atom of the smallest particle of matter that cannot be subdivided and still have the same properties. It is the basic unit of matter
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three subatomic particles
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protons, electrons, nuetrons
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protons
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Located inside the nucleus and have a single positive charge.
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electrons
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Surrounds the nucleus and has a single negative charge.
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Nuetrons
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Located inside the nucleus and have no charge
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atomic number
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the number of protons that a particular element has.
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mass number
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equal to the number of protons plus the number of neutrons.
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isotope
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When the number of neutrons in an atom is changed
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Compound
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two or more different atoms combined to form a new substance
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Elements
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Atoms with unique characteristics
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What happens to an atom with a full electron shell
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atom is very stable
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