Bio1 Chapter 6 Vocab
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each of the black spaces below before clicking
on it to display the answer.
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| Observation | orderly, direct info. gathering about a natural phenomenon
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| Inference | assumption based on prior experience.
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| Scientific Methods | Series of problem-solving procedures (observation, hypothesis, experiment, data, conclusion).
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| Hypothesis | Testable explanation of a situation.
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| Experiment | Procedure performed in controlled setting to test a hypothesis and collect precise data.
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| Control Group | In controlled experiment, group not receiving factor being tested
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| Experimental Group | In controlled experiment, the group receiving factor being tested.
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| Independent Variable | One factor that can be changed in controlled experiment, in factor tested and affects experiment outcome
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| Dependent Variable | Factor being measured in controlled experiment, its value changes in independent variable
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| Constant | Factor that remains fixed during an experiment while independent and dependent variable change
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| Data | Quantitative or qualitative info. gained from scientific investigation.
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| Metric System | Measurement system whose divisions are power of ten.
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| SI | System of measurement used by scientists, abbreviation of the International System of Units.
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| Active Site | Specific place where substrate binds on enzyme.
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| Catalyst | Substance that speeds up chemical reaction by reducing activation energy.
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| Amino Acid | Carbon compound joined by peptide bonds; building block of proteins
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| Carbohydrate | Organic compound containing carbon, hydrogen, and oxygen in a ratio of one oxygen and two hydrogen atoms for each carbon atom
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| Van der Waals forces | Attraction forces between molecules
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| Atom | Building block of matter; contains subatomic particles
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| Nucleus | Center of atom; contains cell membrane-bound organelle that manages cellular functions
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| Isotope | Two or more atoms of the same element having different number of neutrons
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| Molecule | Compound whose atoms are held together by covalent bonds
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| Enzyme | Protein that speeds up a biological reaction by lowering activation energy needed to start reaction
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| Chemical reaction | Energy requiring process which atoms or groups of atoms are changed into different susbtances
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| Substrate | Reactant which an enzyme binds
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| Solute | Substance dissolved in a solvent
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| Solvent | Substance in which another substance is dissolved
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| Acid | Substance that releases hydrogen ions when dissolved in water has a ph less than seven
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| Base | Substance that releases hydroxide ions when dissolved in water, has a ph more than seven
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| Ph | Measure of concentration of hydrogen ions in a solution
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| Buffer | Mixture that can react with acid or base to maintain ph with specific range
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| Mixture | Combination of two or more different substances, it keeps its individual characteristics
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| Macromolecules | Large molecule formed by joining smaller organic molecules together
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| Protein | Organic compound made of amino acids joined by peptide bonds, primary building block of organisms
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| Hydrogen bond | Weak electrostatic bond formed by the attraction of opposite charges between a hydrogen atom and an oxygen, fluorine, or nitrogen atom
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