Table Of Specification Cr Assessment Grp

TABLE OF SPECIFICATION FOR BIOLOGY SKILLS CONTENTS THE CONCEPT OF FOOD AND DIGESTION • List of vitamins, minerals and deficiency disease Introduction to digestive system Definition of digestion The process of digestion • INGESTION  Two-types (mechanical & chemical)  MECHANICAL  Start at the mouth (oral/buccal cavity)  Teeth –parts of the teeth (Incissors, Canines, Pre-molars, Molars) o Diagram of teeth  CHEMICAL  Salivary glands---two functions (amylase breaks down starch & mucus lubricates food to pass down on the oesophagus)  Process of swallowing • DIGESTION  STOMACH  Function of stomach  Gastric juices and acid in the stomach  Illustration • ABSORPTION  SMALL INSTESTINE  Three parts (duodenum, jejunum & ileum)  Three important juices (bile, pancreatic juice & intestinal juice) • EGESTION

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 LARGE INTESTINE  Function of large intestine ENZYMES AND DIGESTION • Importance of enzymes • Three main types of enzymes (Protease, Carbohydrates & Lipase)  Protease  function  Equation for reaction o Proteins = amino acids  Carbohydrates  function  Types of enzymes secreted (amylase, maltase & sucrose)  Equations for reaction o Starch =maltose + glucose o Sucrose =glucose + fructose o Lactose =glucose + galactose  Lipase  Function  Equation for reaction o Lipids = fatty acids + glycerol • Define Optimum pH Summary table of digestive enzyme