Term | Definition |
Bile | Aids in the digestion of fat in the small intestin |
Carbohydrates | sugars or saccharides - molecules made up of carbon, hydrogen, and oxygen that break down to simple sugars; a nutrient used by other body systems for energy; the saliva in the moth begins to break complex carbohydrates into simple sugars body can use |
Chemical Changes | Produce new substances with properties from their original substances. |
Compound | A substance that is composed of 2 or more elements that are chemically combined. |
Chemical Formulas | Represent the types and numbers of elements present in the compound. |
Element | A pure substance that cannot be separated into simpler substances by physical or chemical means, the simplest form of matter. |
Enzymes | Proteins produced by living cells that bring about or speed up reactions. (such as in the digestion of food) |
Inorganic Molecules | Molecules found in the environment that rarely ever contain carbon; not produced by living things. |
Lipids | Steroids, waxes and fats - organic compound, broken down in the small intestine. |
Nucleic Acid | DNA - organic compounds found in living things. |
Organic Molecules | Chemical compounds produced by living things. All organic compounds contain the element Carbon. |
Pancreatic Juices | Aids in the digestion of lipids in the small intestine. |
Pepsin | Enzyme that aids in the digestion of protein in the stomach. |
Peristalsis | Wave-like muscle contractions that occur in the esophagus and intestines that help move food through the digestive system. |
Physical Changes | Changes in the phase, appearance or location of a substance. NO new substance is produced. |
Proteins | A nutrient found in meats, dairy, eggs and nuts; broken down in the stomach by enzymes (like pepsin) and stomach acids. |
Saliva | Clear liquid found in the mouth whose enzymes help to break down carbohydrates. |
The Law of Conservation of Energy | States that energy may be neither created or destroyed; only changed into a different form. |