bio study test2
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
