Digestion Flashcards
What is an anabolic reaction
Combining simple molecules into complex structures
What is a catabolic reaction
Breakdown of complex chemical structures to simpler molecules
What is metabolism
All chemical reactions in a cell
What enzyme does the stomach have for breaking down food
Pepsin
What enzyme does the mouth use to break down food
Salivary amylase
What is a macronutrient
Any nutrient required in large amounts, used as a source of energy
What is a micro nutrient
Any nutrient required in small amounts, can’t be used for energy
What is a non essential nutrient
Can be made by the body if lacking in diet
What is an essential nutrient
Must come from external source
What is an enzyme
A protein molecule that acts as a catalyst
What affects enzymes
Temperature
PH
Inhibitors
What is hydrolysis
Molecule of water is added to a macromolecule, breaking the covalent bond
What is dehydration synthesis
Removing a hydroxyl group from one subunit and a hydrogen atom from another subunit to make a covalent bond
What is protein synthesis
Peptide bond - links amino acids together to make peptides and polypeptides
Where does ingestion begin
First - Mouth, salivary glands, teeth, tongue
Then - esophagus, esophageal sphincter