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Edexcel IGCSE Biology: Double Science 复习笔记 2.8.3 Human Transport Systems: Blood Components of the Blood: An Overview Blood consists of red blood cells, white blood cells, platelets and p...
Edexcel IGCSE Biology: Double Science 复习笔记 2.8.2 Transport Systems in Flowering Plants Xylem The roots, stem and leaves form a plant organ system for the transport of substances around t...
Edexcel IGCSE Biology: Double Science 复习笔记 2.8.1 The Requirement for Transport Systems Unicellular Organisms In order for any organism to function properly, it needs to exchange substanc...
Edexcel IGCSE Biology: Double Science 复习笔记 2.7.3 Practical: The Effect of Exercise on Breathing Practical: The Effect of Exercise on Breathing Exercise causes the frequency of breathing ...
Edexcel IGCSE Biology: Double Science 复习笔记 2.7.2 Smoking & the Human Gas Exchange System Smoking & the Gas Exchange System Smoking causes chronic obstructive lung disease (COPD),...
Edexcel IGCSE Biology: Double Science 复习笔记 2.7.1 Human Gas Exchange System Structure of the Breathing System The lungs are the gas exchange surface in humans All gas exchange surfaces ha...
Edexcel IGCSE Biology: Double Science 复习笔记 2.6.3 Practical: Investigating Respiration Practical: Investigating Respiration We can investigate the production of carbon dioxide and heat fr...
Edexcel IGCSE Biology: Double Science 复习笔记 2.6.2 Types of Respiration Aerobic Respiration Aerobic respiration requires oxygen It is defined as the chemical reaction in cells that uses ox...
Edexcel IGCSE Biology: Double Science 复习笔记 2.6.1 Energy ATP Organisms need energy for things such as: Chemical reactions to build larger molecules from smaller molecules Muscle contracti...
