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59 Cards in this Set

  • Front
  • Back
Macromolecules
Large molecules
Many atoms connected covalently
The 4 types of macromolecules
carbohydrates
lipids
proteins
nucleic acids
Monomers
small building-blocks
Polymers
long/large molecules with many similar monomers
Which macromolecules are polymers
carbohydrates
proteins
nucleic acids
Dehydration
(making polymers)
2 monomers bond together
lose one water molecule
Hydrolysis
(breaking down polymers)
the polymer is disassembled to monomer
the reverse of dehydration
adding a water molecule
Diversity of polymers
each cell has thousands of different marcomolecules
very amoung cells
Carbohydrates
sugar monomers and polymers
Monosaccharides
single sugar monomers
Polysaccharides
polymers with many monomers
Sugars
all sugars have CH2O
Monosaccharides classified by:
location of the carbonyl group ( as aldose or ketose)
the number of carbons in the skeleton
Glucose
the most common monosaccharide
Trioses
3-carbon sugars
Aldose
carbonyl at the end
Ketose
carbonyl in between
Pentoses
5-carbon sugars
Hexoses
6-carbon sugars
Monosccharides
a major fuel for cells (ATP)
raw material for building molecules
Disaccharide
2 monosaccharides
bonded by dehydration
Glycosidic linkage
covalent bond between monosaccharides
bonding between the 1st and 4th carbon
Polysaccharides
many sugar molecules
storage+structure > detirmined by its sugar monomer + linkage
Storage polysaccharides
Starch (plants)
Glycogen (animals)
Starch
has all glucose monomers
stored in chloroplasts as granules
amylose is the simplest from of starch
Glycogen
vertebrates store glycogen in liver + muscle
Glycogen
vertebrates stroe glycogen in the liver and muscles
Cellulose
strong
a component of cell walls
like starch only has different glycosidic bonds- depends on beta glucose ring
Strutural Polysaccharides
polymers with alpha glucose helical
those wigh beta are straight- h-bonds forms between two strands
Microfibrils
parallel cellulose molecules h-bonded together
froms a strong building materials for plants
Chitin
exoskeleton of anthropods
structural support for the cell walls of fungi
Lipids
don't form polymers
hydrophobic
mostly hydrocarbons
nonpolar covalent bonds
(fats, phosolipids, steriods)
Fats
glycerol + fatty acids
Glycerol
3-C alcohol with -OH group on each C
Fatty Acid
C=Ogroup attached to a long carbon chain
Triacylglycerol (troglycerirde)
a fat molecule
3 fatty acids joined to a glycerol by ester linkages
How fatty acids vary
lenght (#ofC)
number + locations of double bonds
Saturated Fatty Acids
no double bond
have the max. number of H atoms possible (saturated in H)
can pack together - solid at room temp.
requires more energy
Unsaturaed Fatty Acids
have double bonds
double bonds cause kinks in the chain
Fats
most animal fats are solid at room temp.
plants and fish are not
eating to much sat. is bad
Hydrogenation
(adding hydrogen)
unsat. > sat.
unsat. > unsat. with trans double bond (unwated product)
Trans fats
may contribute to heart disease more than saturated fats because it is not natural so your body can't break it down.
The function of fat
the major function is to store energy
where do mammals store fat
adipose cells
which also cushion organs and insulates the body
phosolipids
2 fatty acids ( hydrophobic) + a phosphate (hydrophillic) are attached to glycerol
The unique structure of phospholipids
they are both hydrophobic and hydrophillic
Phosolipid bilayer
when added to water the self-assemble into a bilayer with hyrdophobic in the interior
major component of cell membranes
Steroids
4 rings of carbon fused together
Cholesterol
in animal cell membranes
high levels in the blood may contribute to heart diease
Glycogen
vertebrates stroe glycogen in the liver and muscles
Cellulose
strong
a component of cell walls
like starch only has different glycosidic bonds- depends on beta glucose ring
Strutural Polysaccharides
polymers with alpha glucose helical
those wigh beta are straight- h-bonds forms between two strands
Microfibrils
parallel cellulose molecules h-bonded together
froms a strong building materials for plants
Chitin
exoskeleton of anthropods
structural support for the cell walls of fungi
Lipids
don't form polymers
hydrophobic
mostly hydrocarbons
nonpolar covalent bonds
(fats, phosolipids, steriods)
Fats
glycerol + fatty acids
Glycerol
3-C alcohol with -OH group on each C
Fatty Acid
C=Ogroup attached to a long carbon chain
Triacylglycerol (troglycerirde)
a fat molecule
3 fatty acids joined to a glycerol by ester linkages