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Biology SL

SLHL

Chapter 2: Metabolism, Respiration and Photosynthesis

Follow energy and matter through enzyme-controlled pathways, ATP production in respiration, and carbon fixation in photosynthesis—from active-site collisions to chemiosmotic membranes.

Estimated chapter time: 194 minutes

IB syllabus: C1.1 · C1.2 · C1.3 · SL and HL

Chapter Topics

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  1. 1How this chapter works
    1. 1.1Metabolism as a network
    2. 1.2Four currencies
    3. 1.3Structure explains flow
  2. 2Enzymes and metabolic pathways
    1. 2.1Induced fit and activation energy
    2. 2.2Temperature, pH and concentration
  3. 3Cell respiration and ATP
    1. 3.1ATP couples energy
    2. 3.2Anaerobic NAD regeneration
    3. 3.3Fermentation and respirometry
  4. 4Light and pigments
    1. 4.1Light to chemical energy
    2. 4.2Absorption and action spectra
    3. 4.3Pigment chromatography
  5. 5Rates and limiting factors
    1. 5.1Measuring photosynthesis
    2. 5.2Limiting factors
    3. 5.3Gross, net and compensation
    4. 5.4Greenhouse optimization
  6. 6Chapter synthesis
    1. 6.1Compare chemiosmosis
    2. 6.2Matter cycles; energy flows
    3. 6.3Solve by conservation

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