Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. Why is the digestive system an example of an organ system?
   • The digestive system is an example of an organ system as it has several organs working together.
2. How do enzymes relate to metabolism?
   • Enzymes relate to metabolism as they help in the digestion of food.
3. What are the products of digestion used for?
   • The products of digestion are used to build new carbohydrates, lipids and proteins as well as glucose being used for respiration.
4. Where is bile made and stored?
   • Bile is made in the liver and stored in the gall bladder
5. What does bile do with the stomach acid?
   • Bile neutralises stomach acid.
6. What does bile do with fats?
   • Bile emulsifies fats to form small droplets to increase the surface area of the fats and increase the rate of digestion.
7. What two factors increase the rate of fat breakdown by lipase?
   • The alkaline conditions and large surface area increase the rate of fat breakdown by lipase.