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B-CC Biology
Chemistry Unit
45
Biology
Not Applicable
10/03/2005

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Term
acid
Definition
pH from 0 to 6.9
Term
Adhesion
Definition
attraction between
UNLIKE molecules
Term
amino acid
Definition
monomer

building block
of protein
Term
atom
Definition
smallest particle
of an
element
Term
Atomic nucleus
Definition
center of atom

contains protons
and
neutrons
Term
Base
Definition
pH from 7.1 to 14
Term
Benedict's
Solution
Definition
tests for presence of sugars
Term
Biuret Solution
Definition
tests for presence of proteins
Term
Carbohydrate
Definition
organic compound

made of sugar
Term
Chromatography
Definition
technique for

separating mixtures
Term
Cohesion
Definition
attraction of water molecules
Term
compound
Definition
2 or more atoms

chemically combined
Term
conductivity
Definition
ability to conduct electrical current
Term
Covalent Bond
Definition
2 atoms share electrons
Term
Density
Definition
Amount of mass in a
specific volume

(D = M/V)
Term
Disaccharide
Definition
sugar

2 monosaccharides together
Term
Dissolve
Definition
creates a solution
Term
electron
Definition
negative charge
Term
element
Definition
pure substance

cannot be broken down
Term
Enzyme
Definition
type of protein

catalyst
Term
fat
Definition
organic compound,
glycerol and fatty acids
Term
Inorganic
Definition
does not contain carbon
Term
Ionic bond
Definition
1 atom gives an electron to another atom
Term
lipid
Definition
fats
Term
minerals
Definition
natural compounds
Term
molecule
Definition
2 or more atoms held together by
covalent bonds
Term
Monomer
Definition
building block of larger units
Term
Monosaccharide
Definition
Sugar, 1 unit
Term
Nucleic Acid
Definition
DNA or RNA
Term
Nucleotide
Definition
building blocks of nucleic acids
Term
neutron
Definition
NO charge
Term
organic
Definition
contains carbon
Term
organic
Definition
contains carbon
Term
pH
Definition
measurement of the amount of
HYDROGEN (pH scale)
Term
polarity
Definition
opposite ends have opposite electric charges
Term
Polymer
Definition
chain of monomers
Term
Polysaccharide
Definition
long chain of polymers
Term
Protein
Definition
Polymer

consists of a set of 20 amino acids
Term
Proton
Definition
+ charge
Term
Solubility
Definition
maximum amount of solute
that can dissolve in a
solvent
Term
Solute
Definition
dissolves in solution
Term
Solution
Definition
uniform mixture of 2 or more substances
Term
Solvent
Definition
does the dissolving in a solution
(often water)
Term
starch
Definition
polysaccharide,
in plants, entirely glucose molecules
Term
surface tension
Definition
tendency of liquids
to reduce
their surface area
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