Ch.3 Food

Question	Answer
Name 5 common elements found in food	Carbon (C) Hydrogen(H) Oxygen(O) Nitrogen(N) Sulfur(S) Phosphorus(P)
Define 'Monosaccharide'	Carbohydrate made of a single sugar unit Soluble in water E.g Glucose, Fructose
Define 'Disaccharide'	Carbohydrate made of two sugar units Soluble in water E.g Maltose, Sucrose
Define 'Polysaccharide'	Carbohydrate made of many sugar units Insoluble in water (only slightly soluble) E.g Starch, Cellulose, Glycogen
What elements are found in Carbohydrates?	Carbon(C) Hydrogen (H) Oxygen(O)
In what ratio do the most common elements in carbohydrates appear?	Cx(H2O)y
Name 3 sources of carbohydrates in our diet	Bread Potatoes Rice
Name a structural role of carbohydrates	Cellulose is used to form plant cell walls
How do fats and oils differ?	Fats are solid lipids at room temperature Oils are liquid lipids at room temperature
How are triglycerides structured?	One molecule of glycerol linked to three fatty acid molecules Image: Image010 (image/png)
How are phospholipids structures?	One glycerol molecule linked to two fatty acids and one phosphate group Image: Image011 (image/jpeg)
Name 3 sources of lipids in our diet	Butter Cream Oil
What are some structural roles of lipids?	1. Important stores in plants and animals 2.Heat insulation and organ protection 3. Phospholipids and lipoproteins are both important in the structure of cell membane
What are the most common elements found in proteins?	Carbon, Hydrogen, Oxygen, Nitrogen, Sulfur, Phosphorous

Resource summary

	Created by Siúbhán Conlon about 7 years ago