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Life 102, Exam 1
An effort to pass this class
16
Biology
Undergraduate 1
02/12/2009

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Term
Polymers consist of...
Definition
Many similar or identical monomers linked together by covalent bonds.
Term
Monomers are...
Definition
The repeated units found in polymers.
Term
Condensation or Dehydration Reactions
Definition
"A reaction in which two molecules become covalently bonded to each other through the loss of a small molecule, usually water."
Term
Hydrolysis
Definition
Adding a water molecule, thus breaking a bond, and disassembling polymers into monomers.
Term
Sugars are...
Definition
The smallest carbohydrates, and serve as fuel and carbon sources (fuel for other macromolecules).
Term
Polysaccharides are...
Definition
Polymers of sugars, and have storage and structural roles.
Term
Monosaccharides
Definition
-Simple sugars
Ex. Glucose

- have a carbonyl group and multiple hydroxyl groups
Term
Disaccharides
Definition
- Double sugars
- consist of two monosaccharides joined by a condensation reaction
Term
Monosaccharides are also classified by...
Definition
The number of carbons in the backbone.
Term
Recognize the structure of a sugar
Definition
In the form of ring structures
Term
Starch is...
Definition
A storage polysaccharide composed entirely of glucose monomers.
Term
Glycogen
Definition
- "An extensively branched glucose storage polysaccharide found in the liver and muscle of animals
- the animal equivalent of starch
Term
Cellulose is...
Definition
A major component of the tough wall of plant cells.
Term
Lipids are...
Definition
Diverse, hydrophobic molecules
Term
Hydrophobic
Definition
Afraid of water
Term
The unifying feature of lipids is...
Definition
That they all have little or no affinity for water (hydrophobic).
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