TEST

• Why cant we recycle fossil fuels?


  Because if we burn them they turn into CO2.They are non renewable so when they are used they cannot be used again.
• Name two factors that decrease lung function?


  Smoking,pollution
• What is the hazard symbol with fire?


  Flammable
• What is the function of the nucleus?


  Controls and regulates the activities of the cell
• Write a word equation for aerobic respiration?


  glucose+oxygen=carbon dioxide+water+energy
• Label the plant cell


  Like this

  
• What are enzymes are what happens when they are heated?


  They are proteins that act like biological catalysts and if they are in high temp they can denature disrupting its active site and preventing it from doing its job properly with the substrate.
• What are food chains?


  How energy and nutrients flow through an ecosystem from one living organism to another.
• What happens when you add iodine to starch?


  It turns blue-black.
• What happens to litmus paper to test pH?

  It turns red in acidic solutions and blue in alkaline solutions.
• Where is photosynthesis?


  In the leaf
• How is glucose made in the leaves?


  Water and carbon dioxide with the presence of sunlight and chlorophyll makes glucose which is a sugar and oxygen.
• What group of nutrients do glucose and starch belong to?


  carbohydrates