Zusammenfassung der Ressource
Organic Molecules
- Carbohydrates
- Monosaccharides,
Disaccharides,
Polysaccharides
- Glucose:
immediate
source of
energy of
cells
- Polysaccharides:
energy storage
compunds or
structural role
- Generalities:
- Carbon
- Bonding
- Carbon can
bond with as
many as four
other atoms
- Carbon can
bond with itself
to form both
chains and rings
- Differences in the
carbon skeleton =
different chemical
properties
- Hydrophobic:
repels water.
Hydrophilic:
attracts water.
- Biomolecules
- Carbohydrates,
Lipids, Proteins
and Nucleic Acids
- Polymers are
formed by the
joining together
of Monomers
- Proteins
- Functions:
support,
metabolism,
transport,
defense,
regulation,
motion.
- Polypeptide:
long chain
of amino
acids joined
by peptide
bonds
- 20 different
amino acids
in cells
- Levels of structure
- Primary:
sequence
- Secundary: alpha
helices and beta
sheets. Hydrogen
bonding.
- Tertiary: final
folding; bonding
and hydrophobic
interactions.
- Quaternary:
Polypeptide>1
- Shape = Function
- Nucleic Acids
- DNA and
RNA=polymers
of nucleotides
- Nucleotide=phosphate,
5 carbon sugar,
nitrogen-cont. base
- DNA
- Phosphate,
deoxribose and
N cont. bases
- Stores info
for replication
and for order
of aminoacids
- Double helix: A-T, C-G: N bonding
- RNA
- Phosphate, ribose
and AUCG bases.
- Single stranded
- ATP
- Unstable
phosphate
bonds
- Energy currency
- Lipids
- Variety of
compounds that
are insoluble in
water
- Fats and oils:
long term
energy
storage
- One
glycerol.
Three fatty
acids.
- Nonpolar:
insoluble in
water
- Fats:
saturated
fatty acids:
no carbon-carbon
double bonds
- Oils: unsaturated
fatty acids: double
bonds in
hydrocarbon chain
- Phospholipid: Two
fatty acids. One
Phosphate group.
- Bilayer:
hydrophilic
head,
hydrophobic
tails
- Steroids: four ring
structure, different by the
groups attached to them.
- Waxes: One fatty acid. One
hydrocarbon chain bonded to an
alcohol with a long hydrocarbon
chain.