Revision materials/notes for teachers of Biology.*1*CELLS*2*Cells*4*Animal Cells*4*Plant Cells*4*Palisade Mesophyll Cells*4*Xylem and Phloem*4*Mitosis*4*Osmosis*1*PLANTS*2*Leaf Section*1*BLOOD VASCULAR SYSTEM*2*The Heart*4*Blood*4*Blood Plasma*1*DIGESTIVE SYSTEM*2*Balanced Diet*4*Teeth*4*The Mouth*4*Sugars*4*Starch Test*4*Protein Test*4*Vitamins*4*Nicotinic Acid*4*Enzymes*1*RESPIRATION*2*Aerobic Respiration*1*HORMONES*2*Hormones*4*Osmoregulation*4*The Kidney*4*Insulin*1*MUSCLES*2**1*CENTRAL NERVOUS SYSTEM*2*Central Nervous System*4*The Brain*4*The Eye*1*GENETICS*2*Genetics*4*Mendel*4*Blood Groups*1*EVOLUTION*2*