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34 Cards in this Set
- Front
- Back
absolute value
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distance between a number and zero on the number line
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acid
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any compound with a hydrogen ion activity greater than water (pH < 7)
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acid solutions
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solutions that have a pH scale value less than 7
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activation energy
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energy necessary for a chemical reaction to occur
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active verb
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verb that shows an action performed by the subject of the sentence
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active voice
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state of a sentence that contains an active verb
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adaptation
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increase from generation to generation of alleles of genes that allow a species to survive in their environment
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addition principle
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rule that makes it possible to move terms from one side of an equation to the other by adding opposites to each expression
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adenosine triphosphate (ATP)
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cellular fuel; produced in the mitochondria
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adjective
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descriptive word that modifies nouns or pronouns
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adverb
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word modifying a verb, adjective, or other adverb indicating when, how, where, why, or how much
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alkane
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hydrocarbon with only single bonds (Cn H2n+2)
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alkene
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hydrocarbon with one double bond (CnH2n)
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alkyne
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hydrocarbon with one triple bond (CnH2n-2)
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alleles
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two or more different forms of a certain gene
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alveoli
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structure in the lungs that permits the exchange of oxygen and carbon dioxide to occur
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amino acid
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building blocks of proteins
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anatomical position
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a standing prosition in which the body is facing forward, the feet are parallel to each other, and the arms are at the sides with the palms facing forward
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anatomy
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study of the structure of various organs and body systems
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anion
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atom or molecule with a negative charge
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antecedent
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noun that a pronoun fefers back to (replaces)
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anterior
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toward the front of the body or body structure (opposite of posterior)
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antibody
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protein produced by a B cell in response to an antigen
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antigen
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a foreign protein, such as a pathogen, that stimulates antibody production
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apostrophe
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punctuation mark used to indicate possessiveness or the omission of letters or numbers
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Arabic numerals
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written numbers that use a combination of the whole numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9
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arteries
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blood vessels that transport blood away from the heart to the capillaries
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article
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word that is used to limit a noun, either indefinite -a, an- or definite -the
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atom
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smallest part of an element that still retains all the original properties of the elements
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atomic mass
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number of protons and neutrons within the nucleus of an atom; the average mass of all of the known isotopes of an element
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atomic number
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number of protons in the nucleus of the chemical element; the number of protons that defines a specific atom
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attributive tag
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part of a sentence that indicates who said a direct quote
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audience
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person or persons who will be reading a piece of writing
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author's intent
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underlying reason why the author wrote the text
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