Respiration- Triple

Question 1

Experiment that measures heat given off

Answer 1

1. Soak dried beans in water to allow them to start germinating
2. Boil another bunch of dried beans to kill them so they won’t germinate- act as the control
3. Place in a vacuum flask, place a thermometer in it and seal it with cotton wool
4. Record the temperature daily for a week

Question 2

Experiment to measure carbon dioxide produced

Answer 2

1. Prepare one set of germinating beans and one set of boiled beans
2. Put some hydrogen-carbonate indicator in two test tubes
3. Place a gauze platform in each test tube and put one set of beans on the platforms
4. Seal the tubes with a rubber bung
5. Leave for a set period of time
   IT SHOULD GO FROM ORANGE TO YELLOW