Health and lifestyle

• Carbs are like fuel for your body. Active or growing people need lots of Carbs, Contained in - bread, potatoes, cereals. It is used for energy.
• Lipids (fats and oils) provide energy. Lipid-rich foods include butter and chips
• Proteins provide materials to make new cells and to repair damaged tissues, such as muscles. Beans, eggs, fish, meat and milk are high in protein.
• • Vitamins are vital in many processes. For example, vitamin K helps blood to clot and vitamin C prevents illness. Fruit and vegetables are vitamin-rich.
• minerals These include iron, used to transport oxygen in the blood, and calcium, used in making bones and teeth.
• Fibre is not a nutrient. It cannot be absorbed by the body and contains no calories or vitamins, however it is necessary for a balanced and healthy diet.
• Around 70% of human body mass is water. Chemical reactions in cells take place in water and the blood transports substances dissolved in water.
• DNA is the genetic code which makes up genes, which are responsible for giving an organism a specific characteristic.
• DNA looks like a long double helix
• genes - a small section of DNA that gives a specific characteristic
• XX = female
• XY = male
• inheritance - the passing of characteristics determined by genes from parents to offspring
• Bacteria live on fibre in your diet in the large intestines and make important vitamins
• Mouth


  Where food is chewed
• salivary glands


  Add enzymes
• pancreas


  makes enzymes
• liver


  make bile
• oesophagus

  carries food to the stomach
• gall bladder


  stores bile
• bile duct


  bile travels to small intestines
• stomach 


  churns food and starts chemical digestion of protiens
• small intestine


  food is digested and absorbed into blood
• large intestines


  where water and minerals are absorbed into blood