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WHS Biomolecules
4 Biomolecules and examples of each
22
Biology
9th Grade
01/25/2012

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Term
Carbohydrate
Definition
An organic molecule used primarily for short term energy. Some carbohydrates are used for structure and support. Monomers (building blocks)of carbohydrates are monosaccharides and disaccharides. Most carbohydrates have a H:O ratio of 2:1.
Term
Lipid
Definition
An organic molecule; polymer made of fatty acids & glycerol or phosphate. Used for long term energy storage and insulation from temperature and trauma. Examples: saturated fats, unsaturated oils, phospholipids, hormonal steroids, and cholesterol.
Term
Protein
Definition
An organic molecule made many amino acids bonded (peptide bond) together. Offer structural supports and help/control chemical reactions. Examples: antibodies, hemoglobin, collagen, nonsteroidal hormones, and enzymes.
Term
Nucleic Acid
Definition
An organic molecule made of nucleotides. Function: hereditary information, energy. Examples: DNA, RNA, and ATP.
Term
Glucose
Definition
A monomer of carbohydrate. Chemical formula is C6H12O6. The primary source for quick energy. Made in photosynthesis by plants.
Term
Glycogen
Definition
Energy storage for animals. Made/stored by liver and muscles.
Term
Starch (amylose)
Definition
Energy storage for plants.
Term
Cellulose
Definition
Structure or support in plants (cell wall). Indigestible in humans, but still necessary.
Term
Chitin
Definition
Makes up the exoskeleton of crabs, lobsters, shrimp, and insects. Used in industry for cloth dying, wound healing, and paper production.
Term
Fats- saturated
Definition
Energy storage for animals. Solid at room temperature.
Term
Oils- unsaturated
Definition
Energy storage for plants. Liquid at room temperature.
Term
Phospholipid
Definition
Cell membrane structure. Hydrophobic. Example: olive oil.
Term
Hormonal steroids
Definition
Control sexual differentiation and development. (testosterone, progesterone).
Term
Cholesterol
Definition
What gives cell membrane its fluidity. Keeps parts of cell membrane moveable.
Term
Antibodies
Definition
Serve as the bodie's defense system. Y-shaped. Help indicate blood type.
Term
Hemoglobin
Definition
Carries oxygen in the blood.
Term
Collagen
Definition
Found in skin and nails. Elastic, flexible. Absorbed by your body as you age.
Term
Nonsteroidal hormones
Definition
Control some regulatory systems. (Insulin- blood sugar content. Prolactin- breast milk production).
Term
Enzymes
Definition
Catalyze reactions- reactions happen w/ less energy. End in -ase. (Catalase- enzyme that breaks up catalose.)
Term
DNA
Definition
Gives hereditary information. Made of two strands.
Term
RNA
Definition
A copy of DNA used for protein synthesis. Made of one strand.
Term
ATP
Definition
Immediate energy for cells. (Adenosine triphosphate).
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