Biology Vocab #2

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Last updated 1:48 AM on 8/25/26
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8 Terms

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Biology

scientific study of life

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Catalyst

substance that speeds up the rate of a chemical reaction

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pH scale

scales with values from 0-14, used to measure the concentration of H+ ions in a solution, a ph of 0 to 7 is acidic, a ph of 7 is neutral, 7 to 14 is basic

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Controlled Experiment

experiment in which only one variable is changed

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Dependent variable

The variable being measured and observed, responds to independent

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Independent Variable

The variable being manipulated

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Enzyme

protein catalyst that speeds up the rate of specific biological responses/ speeds up chemical reaction

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Activation Energy

energy input that is needed for a reaction to begin/ energy needed for reaction