4.1 Nutrition Flashcards
Nutrition Definition
Processes by which food is ingested, digested, and absorbed into body cells and fluids
Ingestion
Is the feeding method used to take food into the digestive cavity
Assimilation
Once the material is absorbed it must assimilate throughout the organism
Digestion
The splitting of molecules into chemical subunits small enough to be absorbed into an animals body fluids and cells
Herbivores
Only plant eating
Carnivores
Eat other animals
Omnivores
Eat both plants and animals
Condition when the intake of fuel is inadequate
Undernutrition (form of malnutrition)
Condition caused by an excess of specific nutrients
Overnutrition
What organic molecules can animals not produce?
Certain amino acids and essential fatty acids (must be obtained through diet)
Vitamins
Organic Molecules required in small quantities that an animal cannot synthesize.
Essential Minerals
Required inorganic elements
Essential Nutrients
Essential amino acids , fatty acids, vitamins, and minerals
Coenzymes
Nonprotein organic units that assist in enzymatic catalysis
Examples of Essential minerals
Calcium, Iron, Magnesium
Enzymatic Hydrolysis
The breakdown of a compound in the presence of enzymes following it’s reaction with water
Amylases
Hydrolysis Starches
Lipases
Hydrolyze fats and other lipids
Proteases
Hydrolyze proteins
Nucleases
Hydrolyze nucleic acids
Intracellular digestion
Breakdown of complex food to simple form inside the cellular cytoplasm
Endocytosis
How cells absorb food particles
Exocytosis
A process by which the cells move undigested materials from within the cell to extra cellular fluid
Extracellular Digestion
Food is broken down by outside body cell, in a pouch or tube that is enclosed within the body.