1. How can we make digestion efficient?
Tuesday, 19 February 2019
All – Aiming for 4 - To be able to state that the stomach contains acid, state that the liver produces bile and write a simple hypothesis and prediction.
Most – Aiming for 6: To be able to describe the functions of bile and analyse data in order to determine whether a hypothesis is correct.
Some – Aiming for 8 - To be able to explain how acid in the stomach increases the efficiency of pepsin, how bile increases the efficiency of fat digestion and explain how the rate of an enzyme-catalysed reaction shows how efficient the reaction is.
Match the products and nutrients broken down to the correct enzyme responsible

2. Match the products and nutrients broken down to the correct enzyme responsible

3. L4: state that the stomach contains acid, the liver produces bile, write a simple hypothesis
L6:describe the functions of bile and analyse data
L8:explain how stomach acid and bile increases efficiency
The gall bladder

4. Breaking down protein experiment
L4: state that the stomach contains acid, the liver produces bile, write a simple hypothesis
L6:describe the functions of bile and analyse data
L8:explain how stomach acid and bile increases efficiency
Breaking down protein experiment
1/3 fill a test tube with hydrochloric acid
1/3 fill a test tube with pepsin solution
1/3 fill a test tube with a mixture of hydrochloric acid and pepsin
Add a chunk of meat to each tube.
Leave until next lesson

5. Question pH can affect enzyme activity. Figure 1
L4: state that the stomach contains acid, the liver produces bile, write a simple hypothesis
L6:describe the functions of bile and analyse data
L8:explain how stomach acid and bile increases efficiency
Question
pH can affect enzyme activity.
Figure 1
State three conclusions from the data in Figure 1. (3 marks)
Explain why pH affects enzyme activity (3 marks)