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Chapter one bio/chem
cells bio chem
50
Biology
9th Grade
10/17/2011

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Term
Theory
Definition
a highly tested, generally accepted principle
Term
complexity
Definition
not necessarily a complexity of living things
Term
homeostasis
Definition
maintaining a balance within their cells and the enviorment
Term
hypothesis
Definition
testable, possible explanation of an observation
Term
Steps of the scietnific method
Definition
observations, hypothesis, theory, controlled testing, verification
Term
Biology is the
Definition

study of life

 

Term
A unifying explanation for a broad range of explanations
Definition
hypothesis
Term
CH2 chains are closely related to
Definition

lipids

 

Term
lipids are
Definition

nonpolar molecules

 

Term
carbon atoms are bonded together with a double bond in the molecule that has the chemical formula...
Definition
C2H4
Term
Saturated Fatty acids contain
Definition
carbon atoms that are each bonded to four other atoms
Term
condensation/hydrolosis
Definition
the formation of polymers to monomers; the breakdown of polymesinto monomers
Term
antiparrallelism
Definition
the direction of qualities in the phosphate-sugar backbones of DNA
Term
Purines of DNA
Definition
Adenine and Guanine
Term
Nonpolar is a characteristic of...
Definition
lipids
Term
lipids in plants
Definition
un-saturated fatty acid chains
Term
ester
Definition
in lipid synthesis, the condensation reaction forms that forms the link between a glycerol molecule and a fatty acid
Term
Nucleic acids consist of
Definition
long chains of nucleotides
Term
DNA double helix two strands are held together at the nitrogen bases by
Definition
hydrogen bonds
Term
DNA and RNA are
Definition
nucleic acids
Term
lipids are soluble in
Definition
oil
Term
phospholipid molecule dosn't contain
Definition
3 fatty acid chains
Term
nucleotides are related to
Definition
DNA and RNA
Term
condensation or dehydration synthesis
Definition
the reaction that links amino acids to form polypeptides , links simple sugars to form polysaccharides and that is involved in the formation of triglycerides produces water as a by-product 
Term
true globular proteins, but not fibrous are
Definition
usually soluble in the cytoplasm of cells and the plasma of blood
Term
amino acids are monomers of
Definition
proteins
Term
electrons of an atom....
Definition
orbit the nucleus in various ebergy levels
Term
difference of an ionic and covalent bond
Definition
Electrons are exchanged between atoms held together by an ionic bond, but they are shared between atoms with a covalent bond
Term
Acidic solutions have a pH that is
Definition
less than seven
Term
Buffers
Definition
tend to prevent sudden or large flucuations in pH
Term
atoms become more stable when they form compounds because
Definition
their outer orbitals become filled when they form compounds
Term
carbon's characteristics
Definition
it has 4 electrons in its outer most energy level, readily bonds with other carbon atoms, always gain electrons when they form compounds
Term
element
Definition
a substance that is composed of only one type of atom
Term
polar covalent bond
Definition
the bond formed when two atoms share a pair of electrons unequally
Term
characteristics of water that are not a result of hydrogen bonding
Definition
adhesive strength, high specific heat, and cohesive strength
Term
dipole
Definition
a molecule that has a partial positive charge on one side and a partial negative charge on the other side
Term
Atoms are composed of
Definition
protons with a positive charge, neutrons with no charge, and a electrons with a negative charge
Term
atoms compose
Definition
all the matter in the universe
Term
All organic compound contain the element
Definition
carbon
Term
polysaccharides
Definition
are carbohydrates
Term
carboxylic acid group
Definition
functional group found in fatty acids
Term
water molecules break up other polar substances
Definition
such as salts,because of the uneven charge distribution that exists in water molecules, thus freeing ions in these substances for use in the body
Term
smallest particle of carbon that can retain the chemical properties of carbon
Definition
carbon atom
Term
Long chains of amino acids are found in
Definition
proteins
Term
Alcohols are NOT
Definition
one kind of functional group in organic molecules that contains oxygen
Term
amino acids functional groups
Definition
an amino group and a carboxylic group
Term
water molecule is polar because
Definition
do not share the electrons equally
Term
Saturated fatty acids contain
Definition
carbon atoms that are each bonded to four other atoms
Term
Animals store glucose in the form of
Definition
glycogen
Term
an atom that has lost or gained electrons
Definition
ion
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