Biomolecules and Nutrition ( Carbohydrates )

Types of carbohydrates

Types of carbohydrates

Sugar-provides energy ( C6H12O6+6O2=6CO2+6H2O) Starch-provides energy Fibre-prevents constipation, prevents cancer of the bowel

Structure of fibre

Cellulose- plant cell walls glued together to make rigid structure Chitin- cell walls of fungi, insect cuticles

Metabolic

Energy source-respiration of glucose

Storage

Energy story- Starch ( in plants ) Glycogen ( in animals )

Test for reducing sugar

Add Benedict’s solution, heat but do not boil, if reducing sugar present turns blue to red