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Chapter 41
Unit Four
15
Biology
Undergraduate 2
12/02/2014

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Term
Chemical Energy
Definition
Energy available in molecules for release in chemical reactions
Term
Essential Nutrients
Definition
Substance an organism cannot synthesis and has to absorb
Term
Organic C and N
Definition
Must be contained in diet
Term
ATP
Definition
Created energy
Term
Macromolecules
Definition
A giant molecule
Term
Ingestion
Definition
Eating in many forms
Term
Digestion
Definition
Food broken down into small enough molecules it can be absorbed
Term
Absorption
Definition
Uptake of small molecules
Term
Elimination
Definition
Removal of undigested food
Term
Enzymes
Definition
Specialized proteins that speed up chemical reations
Term
Alimentary
Definition
A complete digestive tract
Term
Peristalsis
Definition
Alternating waves of contraction and relaxation in smooth muscle
Term
Saliva
Definition
Lubricates from and begins digestion
Term
Bolus
Definition
A lubricated ball of chewed food
Term
Pepsin
Definition
Enzyme present in gastric juice that begins breakdown
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