Trace glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport system, give the ATP tally both ways (38/36 and 30–32), work out RQ values, and compare aerobic with anaerobic respiration.
Unit 7 carries 6 of the 40 botany marks; with four chapters sharing them, this one averages one and a half (MEC publishes weights by unit, not by chapter). The MEC scope line: Introduction, significance and types of respiration; Mechanism of aerobic and anaerobic respiration; Glycolysis; Oxidative decarboxylation and Krebs (TCA) cycle; Electron transport system and oxidative phosphorylation; Anaerobic respiration and its mechanism; Factors affecting respiration. Three ways it is asked:
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See the plansPlant Physiology: Unit Map and Reading Order
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Botany Rapid Revision — Cycles, Pigments & Pathways
Photosynthesis and respiration accounting, plant hormones, life-cycle patterns and the classification characters that carry the 40-mark Botany block.
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Mendelian ratios, mitosis vs meiosis, and DNA base-pairing rules in one page.
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Sort sugars by size, linkage and reducing power, tell starch from cellulose from chitin, classify lipids and fatty acids, and match each plant mineral to its role and deficiency symptom.