Breakdown

8A Food, glorious food

Break down
Describe how digestion is helped by digestive juices. Describe how a model can be used to think about how something works. Describe how enzymes are affected by pH and temperature. Recall what starch is digested into.
 * Outcomes (what you will be able to do by the end of this lesson) **


 * Starter **
 * Review homework and completed work from last lesson
 * Key term quiz - there are lots of key terms in this unit

> media type="file" key="ES8_Ad016_11ani.swf" width="640" height="480" > Additional resources: > - BBC Bitesize notes > - p16-17 of Exploring Science 8 > - skoool tutorial on enzymes > > > media type="file" key="ES8_Ad016_09ani.swf" width="640" height="480" > > > > >
 * Activities**
 * 1) Find out about ...... Use the animation and links below to help you:
 * 1) Now look again at the model gut from last lesson. Look at the animation to see how enzymes digestion large molecules before absorption from the gut into the blood
 * 1) Now read about the models that can be used to describe the way digestive enzymes work on p16-17 of Exploring Science 8. Discuss which is the best model and why. What about each model is good and in which ways is each model flawed?
 * 1) Learn more about how pH affects enzymes by looking at this simulated experiment from skoool
 * 1) Investigate the effect of temperature using the outline on the worksheet [[file:ES8_CHAP_Ad2.pdf|Amylase in action]]
 * 1) complete Q1-3, 4, 5, 8 from p16 - 17 of Exploring Science 8
 * 1) Extension: Learn about different kinds of digestive enzymes by reading and answer the questions on the worksheet


 * Summary **
 * Review completed classwork / key term quiz
 * In groups try to answer the questions on [[file:ES8_Ad016_12msu.doc|Enzyme optimum graphs]]


 * Homework activity options **
 * Download complete the gapfill on [[file:ES8_Ad017_19msc.doc|Break down]], print-off and stick into your exercise book. You can copy and complete if you have a problem printing.


 * Useful extras**