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MOLECULES OF LIFEMacromolecules
What is a molecule?
Two or more atoms covalently bonded together. Examples: H2O, CO2, CH4 What is a macromolecule?
A very large molecule made of MANY atoms covalently bonded together. Examples: DNA, Sugar, Fat What is an organic molecule?
A molecule that contains carbon (with the exception of carbon dioxide). What is a monomer?
A single molecule that repeats to make a large molecule.
What is a polymer?
A large molecule made of chains of smaller molecules.
CARBOHYDRATESStructure Function Examples Foods
Hydrogens: Oxygens (___:___)Monomer:Monosaccharide
Polymer:Polysaccharide
Energy Source
Short term
Long term
Glucose
Starch
Table sugar
Pasta; Potatoes
LIPIDS (FATS)Structure Function Examples Foods
Glycerol backbone with fatty acid chains attached
Monomer:Fatty AcidPolymer:Lipid or Fat
Energy Storage
Membrane Structure
Steroids
Saturated solid
Unsaturated liquid
cell membranes
Testosterone
butter
oils
Saturated Fat (solid at room temp)Single Bonds Between Carbons
Unsaturated Fat (liquid at room temp)Some carbons double bonded
Friday, November 7, 2008Question of the Day
List one difference between a carbohydrate and a lipid?
PROTEINSStructure Function Examples Foods
Long chains of amino acids20 kinds of amino acidsMonomer:Amino Acid
Polymer:Protein
Do the work in your body.
speed up reactions
Structural (building)
enzymes
collagen
meat cheese Eggs yogurt
NUCLEIC ACIDS
Structure Function Examples
Nucleic Acids Store Genetic Information
DNA
Carbohydrate (monosaccharide)
Lipid(Fatty Acid)
Protein (Amino Acid)
Brainstorm
Inside of each shape provide the following:
•2 Foods you eat that contain that molecule.•2 Ways that your body uses those molecules.•2 Facts about the structure (shape) of that molecule.