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Biology · Triple Science

Bioenergetics

Spec 4.4 Paper 1 📙 Higher

Subtopics

PhotosynthesisSpec 4.4.1.1Describe photosynthesis — what it is, where it happens and what the equation means. + Rate of PhotosynthesisSpec 4.4.1.2Explain what limits the rate of photosynthesis and how to investigate it. + Uses of Glucose from PhotosynthesisSpec 4.4.1.3Describe how plants use the glucose produced by photosynthesis. + Aerobic RespirationSpec 4.4.2.1Describe aerobic respiration — what it is, where it happens and what it produces. + Anaerobic RespirationSpec 4.4.2.2Describe anaerobic respiration in animals and yeast and explain its uses. + Response to ExerciseSpec 4.4.2.3Describe how the body responds during and after exercise, including oxygen debt. + MetabolismSpec 4.4.2.4Define metabolism and describe the key metabolic reactions in living organisms. +

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Key Equations

6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O (aerobic)

glucose → lactic acid (anaerobic, humans)

glucose → ethanol + CO₂ (fermentation)

⭐ Higher Tier Content

Light intensity vs rate of photosynthesis graphs

Metabolism and metabolic rate

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