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ATP

ORGANIC MOLECULE COMPOSED OF ABASE, SUGAR, AND THREE PHOSPHATE GROUPS THAT ACTS AS THE MAIN ENERGU CURRENCY OF CELLS

acid

a compound that forms hydrogen ions when dissolved in water

molecule

a grouop of atoms held together by covalent bonds

molecule

a group of atoms held together by covalent bonds

pH

a measure of the concentration of hydrogen ions in solutions

protein

a molecular chain of amino acids

nucleic acid

a molecular chain of nucleotides

when a group of atoms is held together by covalent bonds,

a molecule is formed

electrons

a negatively charged atomic particle

ionic bonds occur between

a negatively charged ion and positively charged ion.

element

a substance made of only one kind of atom

element

a substance made of only one type of atom

compound

a substance made of the joined atoms of two or more different elements

catalyst

a substance that decreases that activation energy of a chemical reaction

an enzyme's active site allows the enzyme to attach

a substrate

RNA

a type of nucleic acid involves in protein synthesis

compound

a ubstance made when atoms of two or more different elements join together

hydrogen bond

a weak attraction between polar molecules

which of the following groups of terms is associated with carbohydrates

monosaccharides, glycogen, cellulose

solution

one substance evenly distributed in another

in an atom with the same number of electrons and protons, the electrical charge is

positive

when food molecules are broken down inside cells, some of the energy in the molecules is stored temporarily in

proteins

lipids

a class of organic compounds that includes fats, steroids, and waxes

carbohydrates

a class of organic compounds made of carbon, hydrogen and oxygen atoms in a 1:2:1 ration

activation energy

amount of energy required to start a chemical reaction

adhesion

an attraction between different substances

cohesion

an attraction between substances of the same kind

The speed of a chemical reaction is increased by

an enzyme

An element is defined as a pure substance because it is made of only one kind of

atom

ion

atom or molecule that has lost or gained one or more electrons

ionic bond

attraction between oppositely charged ions

Acids and bases differ in that

bases have a lower pH than do acids

atoms bond with other atoms because

bonding helps atoms become more stable

energy

capacity for doing works

covalent bond

chemical bond in which electrons are shared

DNA

double standad, helical nucleic acid that stores hereditary info

atom

smallest unit of matter that cannot be broken down by chemical means

saturated fatty acid

solid at room temperature

atom

the smallest unit of matter that cannot be broken down by chemical means


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