A LevelBiologyOCR5. Communication, Homeostasis & Energy

5. Communication, Homeostasis & Energy (OCR A Level Biology)

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5.1 Communication & Homeostasis

  1. 5.1.1 The Need for Homeostasis
  2. 5.1.2 The Principles of Homeostasis
  3. 5.1.3 Cell Signalling
  4. 5.1.4 Thermoregulation

5.2 Excretion

  1. 5.2.1 The Importance of Excretion
  2. 5.2.2 The Mammalian Liver: Structure
  3. 5.2.3 The Mammalian Liver: Function
  4. 5.2.4 The Liver Under the Microscope
  5. 5.2.5 The Mammalian Kidney: Structure
  6. 5.2.6 The Mammalian Kidney: Function
  7. 5.2.7 The Kidney Under the Microscope
  8. 5.2.8 Osmoregulation
  9. 5.2.9 Kidney Failure
  10. 5.2.10 Excretory Products & Medical Diagnosis

5.3 Neuronal Communication

  1. 5.3.1 Neurones
  2. 5.3.2 Mammalian Sensory Receptors
  3. 5.3.3 Resting Potentials
  4. 5.3.4 Action Potentials
  5. 5.3.5 Transmission of Nerve Impulses
  6. 5.3.6 The Refractory Period
  7. 5.3.7 Factors that Affect the Speed of Conduction
  8. 5.3.8 The Role of Synapses
  9. 5.3.9 Transmission Across a Cholinergic Synapse

5.4 Hormonal Communication

  1. 5.4.1 The Endocrine System
  2. 5.4.2 The Pancreas under the Microscope
  3. 5.4.3 Controlling Blood Glucose Concentration
  4. 5.4.4 Diabetes

5.5 Plant & Animal Responses

  1. 5.5.1 Plant Responses
  2. 5.5.2 Investigating Phototropism & Geotropism
  3. 5.5.3 Plant Hormones
  4. 5.5.4 Auxins & Apical Dominance
  5. 5.5.5 Gibberellin
  6. 5.5.6 Practical: Effect of Plant Hormones on Growth
  7. 5.5.7 Commercial Use of Plant Hormones
  8. 5.5.8 Mammalian Nervous System
  9. 5.5.9 The Human Brain
  10. 5.5.10 Reflex Actions
  11. 5.5.11 Coordination of Responses
  12. 5.5.12 Factors Affecting Heart Rate
  13. 5.5.13 Investigating Factors Affecting Heart Rate
  14. 5.5.14 Mammalian Muscle Structure
  15. 5.5.15 Transmission Across a Neuromuscular Junction
  16. 5.5.16 The Sliding Filament Model

5.6 Photosynthesis

  1. 5.6.1 Photosynthesis & Respiration
  2. 5.6.2 Chloroplast Structure & Function
  3. 5.6.3 Photosynthetic Pigments
  4. 5.6.4 Practical: Investigating Photosynthetic Pigments with Chromatography
  5. 5.6.5 The Light-Dependent Stage
  6. 5.6.6 Using the Products of the Light-Dependent Reaction
  7. 5.6.7 The Light-Independent Stage
  8. 5.6.8 Uses of Triose Phosphate
  9. 5.6.9 Factors Affecting the Rate of Photosynthesis
  10. 5.6.10 Practical: Investigating Factors Affecting the Rate of Photosynthesis

5.7 Respiration

  1. 5.7.1 The Need for Cellular Respiration
  2. 5.7.2 Structure of the Mitochondrion
  3. 5.7.3 The Four Stages in Aerobic Respiration
  4. 5.7.4 Glycolysis
  5. 5.7.5 The Link Reaction
  6. 5.7.6 The Krebs Cycle
  7. 5.7.7 The Role of Coenzymes
  8. 5.7.8 Oxidative Phosphorylation
  9. 5.7.9 Anaerobic Respiration
  10. 5.7.10 Energy Yield of Aerobic vs Anaerobic Respiration
  11. 5.7.11 Practical: Investigating the Rate of Respiration
  12. 5.7.12 Respiratory Substrates
  13. 5.7.13 Respiratory Quotient (RQ)
  14. 5.7.14 Practical: Respirometer

5.1 Communication & Homeostasis

  1. Multiple Choice Questions
  2. Structured Questions

5.2 Excretion

  1. Multiple Choice Questions
  2. Structured Questions

5.3 Neuronal Communication

  1. Multiple Choice Questions
  2. Structured Questions

5.4 Hormonal Communication

  1. Multiple Choice Questions
  2. Structured Questions

5.5 Plant & Animal Responses

  1. Multiple Choice Questions
  2. Structured Questions

5.6 Photosynthesis

  1. Multiple Choice Questions
  2. Structured Questions

5.7 Respiration

  1. Multiple Choice Questions
  2. Structured Questions
OCR A Level Biology Past Papers