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15 Cards in this Set
- Front
- Back
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abiotic factors
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physical or nonloving factor that shapes an ecosystem
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acidic
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solution w/ higher concentration of H positive ions, ph below 7
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activation energy
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energy needed to get a reaction started
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active site
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the part of an an enzyme or antibody where the chemical reaction occurs
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active transport
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energy requiring process that moves material across a cell membrane against a concentration difference
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adhesive
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attraction between molecules of different substances
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alkaline
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lower concentration of hydrogen ions, ph above 7, basic solution
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allele
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one of a number of different forms of a gene (traits like tall or short)
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amino acid
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compunds w/ amino group on one end and carboxyl group on another, proteins are polymers of amino acids
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anion
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negative charged ion
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aminocentesis
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a procedure in which a small sample of amniotic fluid i drawn out of the uterus through a needle inserted in the abdomen
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anton v. leeuwenhoek
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discovered microorganisms
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atom
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basic unit of matter
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atomic number
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the number of protons in an atom
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ATP
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principle chemical compound that cells use to store and release energy
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