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Unit 4: Energy, Environment, Microbiology and Immunity

Topic 5 - Energy Flow, Ecosystems and the Environment

Topic 6 - Microbiology, Immunity and Forensics

Unit 5: Respiration, Internal Environment, Coordination and Gene Technology

Topic 7 - Respiration, Muscles and the Internal Environment

7.1—Aerobic respiration overview

7.2—Glycolysis in aerobic and anaerobic respiration

7.3—Link reaction and Krebs cycle

7.4—Oxidative phosphorylation

7.5—Lactate after anaerobic respiration

7.6—Respiratory quotient

7.7—Core Practical 15 - respiration in yeast

7.8—Core Practical 16 - respirometer, respiration rate and RQ

7.9—Movement by muscles, tendons, skeleton and ligaments

7.10—Skeletal muscle fibre and twitch types

7.11—Sliding filament theory

7.12—Cardiac muscle electrical activity and ECGs

7.13—Cardiac output, ventilation and control centres

7.14—Adrenaline and fight-or-flight

7.15—Core Practical 17 - exercise and spirometer traces

7.16—Negative and positive feedback

7.17—Homeostasis and thermoregulation

7.18—Mammalian kidney structure

7.19—Urea production and ultrafiltration

7.20—Selective reabsorption and loop of Henle

7.21—ADH and osmoregulation

7.22—Transcription factors and hormone action

Topic 8 - Coordination, Response and Gene Technology

Unit 6: Practical Skills in Biology II

Practical Skills in Biology II

A-Level Edexcel Biology A2 7.3—Link reaction and Krebs cycle Topic Practice

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