Teas Study Manual Glossary

Front 1

absolute value

Back 1

distance between a number and zero on the number line

Front 2

acid

Back 2

any compound with a hydrogen ion activity greater than water (pH < 7)

Front 3

acid solutions

Back 3

solutions that have a pH scale value less than 7

Front 4

activation energy

Back 4

energy necessary for a chemical reaction to occur

Front 5

active verb

Back 5

verb that shows an action performed by the subject of the sentence

Front 6

active voice

Back 6

state of a sentence that contains an active verb

Front 7

adaptation

Back 7

increase from generation to generation of alleles of genes that allow a species to survive in their environment

Front 8

addition principle

Back 8

rule that makes it possible to move terms from one side of an equation to the other by adding opposites to each expression

Front 9

adenosine triphosphate (ATP)

Back 9

cellular fuel; produced in the mitochondria

Front 10

adjective

Back 10

descriptive word that modifies nouns or pronouns

Front 11

adverb

Back 11

word modifying a verb, adjective, or other adverb indicating when, how, where, why, or how much

Front 12

alkane

Back 12

hydrocarbon with only single bonds (Cn H2n+2)

Front 13

alkene

Back 13

hydrocarbon with one double bond (CnH2n)

Front 14

alkyne

Back 14

hydrocarbon with one triple bond (CnH2n-2)

Front 15

alleles

Back 15

two or more different forms of a certain gene

Front 16

alveoli

Back 16

structure in the lungs that permits the exchange of oxygen and carbon dioxide to occur

Front 17

amino acid

Back 17

building blocks of proteins

Front 18

anatomical position

Back 18

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

Front 19

anatomy

Back 19

study of the structure of various organs and body systems

Front 20

anion

Back 20

atom or molecule with a negative charge

Front 21

antecedent

Back 21

noun that a pronoun fefers back to (replaces)

Front 22

anterior

Back 22

toward the front of the body or body structure (opposite of posterior)

Front 23

antibody

Back 23

protein produced by a B cell in response to an antigen

Front 24

antigen

Back 24

a foreign protein, such as a pathogen, that stimulates antibody production

Front 25

apostrophe

Back 25

punctuation mark used to indicate possessiveness or the omission of letters or numbers

Front 26

Arabic numerals

Back 26

written numbers that use a combination of the whole numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9

Front 27

arteries

Back 27

blood vessels that transport blood away from the heart to the capillaries

Front 28

article

Back 28

word that is used to limit a noun, either indefinite -a, an- or definite -the

Front 29

atom

Back 29

smallest part of an element that still retains all the original properties of the elements

Front 30

atomic mass

Back 30

number of protons and neutrons within the nucleus of an atom; the average mass of all of the known isotopes of an element

Front 31

atomic number

Back 31

number of protons in the nucleus of the chemical element; the number of protons that defines a specific atom

Front 32

attributive tag

Back 32

part of a sentence that indicates who said a direct quote

Front 33

audience

Back 33

person or persons who will be reading a piece of writing

Front 34

author's intent

Back 34

underlying reason why the author wrote the text