Year 11 - Science
Anaerobic cellular respiration in humans and other organisms, including ATP
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 describe the reactants and products of anaerobic cellular respiration in humans, plants and microorganisms, and explain where, why and when it takes place.
Key Notes
- Word and balanced symbol equations for anaerobic cellular respiration in humans, and conditions in which it occurs
- Word and symbol equations for anaerobic respiration in plants and micro-organisms, and conditions in which it occurs
- Anaerobic cellular respiration takes place only in the cell cytoplasm and does not involve mitochondria
- Anaerobic cellular respiration provides less ATP (so less energy) than aerobic cellular respiration, but more quickly
- Uses of anaerobic cellular respiration (fermentation) in yeast
Vocabulary To Learn
- cellular respiration: An exothermic chemical process that transfers energy for life processes, using glucose as a fuel.
- anaerobic: A process that does not require oxygen.
- lactic acid: A product of anaerobic cellular respiration in humans that causes muscle cramps.
- oxygen debt: The amount of oxygen necessary to remove lactic acid from the body after exercise.
- fermentation: Anaerobic cellular respiration in yeast that produces ethanol (a type of alcohol) and carbon dioxide gas.
Common Mistakes To Avoid
- Students sometimes think that plants don't respire, and that they (only) photosynthesise instead.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Word and balanced symbol equations for anaerobic cellular respiration in humans, and conditions in which it occurs. Word and symbol equations for anaerobic respiration in plants and micro-organisms, and conditions in which it occurs.
2. Define this scientific word and use it in context. 'cellular respiration'
An exothermic chemical process that transfers energy for life processes, using glucose as a fuel. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Students sometimes think that plants don't respire, and that they (only) photosynthesise instead. Correction: This lesson contains examples of plants respiring.
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
- Explaining the effect of different substrates on the rate of cellular respiration Study Guide
- Explaining the effect of temperature 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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