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