Embedded Files
objectives
objectives
- Outline the role of respiration in providing energy for the activities of cells
- State the equation for aerobic respiration using symbols: C6H12O6 + 6O2 → 6CO2 + 6H2O
Aerobic Respiration - A recap
Aerobic Respiration - A recap
The products of aerobic respiration are carbon dioxide, water and energy.
Energy is released as chemical energy (ATP) and heat. ATP is used for various things, such as muscle contraction. The heat energy helps to maintain a steady body temperature.
Class Practical
Class Practical
Lime water turns milky/cloudy when you pass carbon dioxide through it because a reaction takes place that produces a white precipitate.
This can be used as evidence that carbon dioxide is excreted by the lungs.
Class Practical 2 - Germinating Seeds
Class Practical 2 - Germinating Seeds
Complete the class practical using Germinating seeds - you may need to leave this for 24 hours!
CO2-production-prac.pdfalternative to practical activity
alternative to practical activity
Due to the onset of the coronavirus epidemic we may not be able to carry out laboratory experiments in the school laboratory. In thi event please complete the below gizmo titled 'Cell Energy Cycle'.
CellEnergySE.pdfAerobic respiration produces CO2
Aerobic respiration produces CO2
Carbon dioxide production can also be detected using an indicator called hydrogen carbonate indicator. Hydrogen carbonate indicator changes colour to show the level of carbon dioxide in the surrounding air.
Predicting respiration activity
Predicting respiration activity
Task: What colour will each go? Explain your answer
Respiration and Heat practical
Respiration and Heat practical
Complete the practical worksheet below:
Heat-production-prac.pdfPredicting Temperature change in our practical activity
Predicting Temperature change in our practical activity
Answer the Questions below:
- What would you expect to happen to the temperature in the bell jar containing the germinating seeds? Explain your answer.
- What is the purpose of the boiled seeds?
- Why were the bell jars sealed with wet cotton wool?
- Why should the seeds be sterilised (surface bacteria killed) before putting them into the bell jars?
Respiration and Heat
Respiration and Heat
Respiration produces Heat Energy
When we are cold we shiver as this increases respiration in our muscle cells
This produces Heat and warms us up
past paper question
past paper question
Complete the past paper exam question below:
PPH-respiration-experiments.docxPage updated
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