Year 11 - Science
Explaining the effect of temperature on the rate of cellular respiration
Aerobic and anaerobic cellular respiration
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit covers cellular respiration as an exothermic reaction in all cells, comparing aerobic and anaerobic processes. It explores cell structures and functions, enhanced by electron microscopy. Emphasis is on conducting experiments, analysing data, and interpreting results.
Lesson Summary
You will learn to analyse data collected from a respirometer, calculate the rate of cellular respiration, and explain the effect of temperature on the rate.
Key Notes
- Calculate the rate of respiration by dividing the distance moved up the capillary tube of a respirometer by the time.
- Use appropriate units for the rate of cellular respiration.
- Compare the rate of respiration in small organisms at different temperatures.
- Describe trends in the data.
- Use ideas about enzymes and rate of chemical reactions to explain the effect of temperature on the rate of respiration.
Vocabulary To Learn
- rate: A measure of how much change occurs per unit of time.
- cellular respiration: An exothermic chemical process that transfers energy for life processes, using glucose as fuel.
- respirometer: Apparatus used to measure the rate of respiration in small organisms.
- enzyme: A biological catalyst.
- denature: When bonds in an enzyme molecule break and the molecule changes shape.
Common Mistakes To Avoid
- Not appreciating that increasing temperature up to the optimum has a different effect on rate than increasing temperature above the optimum.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Calculate the rate of respiration by dividing the distance moved up the capillary tube of a respirometer by the time. Use appropriate units for the rate of cellular respiration.
2. Define this scientific word and use it in context. 'rate'
A measure of how much change occurs per unit of time. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Not appreciating that increasing temperature up to the optimum has a different effect on rate than increasing temperature above the optimum. Correction: The effects on rate of increasing temperature up to and beyond the optimum are explained.
More Lessons In This Unit
- Aerobic cellular respiration in humans and other organisms Study Guide
- Aerobic cellular respiration in humans and other organisms, including ATP Study Guide
- Anaerobic cellular respiration in humans and other organisms Study Guide
- Anaerobic cellular respiration in humans and other organisms, including ATP Study Guide
- Explaining the effect of different substrates on the rate of cellular respiration Study Guide
- The effect of different substrates on cellular respiration in yeast: practical Study Guide
- The effect of temperature on cellular respiration in small organisms: practical Study Guide
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