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Biology

PRACTICAL: Demonstrating the production of heat in respiration

QuestionAnswer
What 5 pieces of apparatus are needed for this experiment? 1. Vacuum Flasks 2. Thermometer 3. Cotton wool 4. Germinating seeds 5. Dead/boiled seeds
What temperature change will happen in the flask with germinating seeds? Temperature will increase
What temperature change will happen in the flask with dead seeds? No temperature change
Why must there be some air in the vacuum flasks? So the beans can respire aerobically
What must we first do to the beans before the experiment to make them germinate? Soak them in water for a day or two
What must we first do to the control beans before the experiment? Boil them to kill them, making sure they can't respire
How often should we record the temperature in each flask? Everyday for a week
What 3 factors must be controlled in this experiment? 1. The number of seeds 2. The starting temperature of the flasks 3. The material and size of the flasks
What are we changing in this experiment? The content of the flasks (dead beans and germinating beans)
What 3 thing must be the same about the beans in this experiment? 1. Size 2. Age 3. Species
Created by: JoeMather
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