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Summary Questions for AQA a -level biology for unit 5
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Summary questions for AQA biology unit 5 in correlation with the A-Level specification.
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SPECIFICATION RELATED SUB-TOPIC QUESTIONS1. Describe the main stages of photosynthesis
2. Explain how the plant leaf is adapted to carry out photosynthesis.
1. Explain the process of oxidation and reduction.
2. Explain how ATP is made during the light-dependent reaction
3. Describe the role of photolysis in the light dependent reaction
4. Explain how chloroplasts are adapted to carry out the light dependent reaction
1. Describe the events in the Calvin cycle.
2. Describe the roles of ATP and reduced NADP in the light independent reaction
3. Explain how carbon dioxide absorbed by plants is incorporated into organic
molecules.
1. Describe the main stages of glycolysis and its products.
2. Outline where glycolysis fits in the overall respiration process.
1. Outline the nature of the link cycle.
2. Explain what happens during the Krebs cycle.
3. Describe the nature of hydrogen carrier molecules and explain their role in the Krebs
cycle.
1. Explain the role of oxygen in aerobic respiration.
2. Explain how ATP is synthesised during oxidative phosphorylation.
3. Describe where oxidative phosphorylation takes place.
1. Explain how ethanol is produced by anaerobic respiration.
2. Explain how lactate is produced by anaerobic respiration.
3. Explain how energy is released by respiration in the absence of oxygen.
1. Explain how energy enters an ecosystem.
2. Explain how energy is transferred between the organisms in the ecosystem.
3. Define biomass and explain how it is measured.
4. Define the terms :
- Trophic level
- Food chain
- Food web
- Producer
- Consumer
- Decomposer
1. Explain how energy is lost along a food chain
2. Explain what is meant by gross primary productivity and net primary productivity.
3. Calculate the percentage of energy that is transferred from one trophic level to
another.
1. Summarise the common features of all nutrient cycles
2. Describe the features of the phosphorus cycle.
3. Describe the features of the nitrogen cycle.
4. Explain the roles of saprobiotic organisms is the nutrient cycle.
5. Define :
- Ammonification
- Nitrification
- Nitrogen fixation
- Denitrification
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