Edexcel IGCSE Biology: Double Science 复习笔记 2.10.4 The Role of Auxin in Phototropism The Role of Auxin in Phototropism Plants produce plant growth regulators (similar to hormones in anima...
Edexcel IGCSE Biology: Double Science 复习笔记 2.10.3 Response to Stimuli: Plants Response to Stimuli: Plants Plants need to be able to grow in response to certain stimuli For example, plant...
Edexcel IGCSE Biology: Double Science 复习笔记 2.10.2 Control of Homeostasis Co-ordinating a Response Homeostasis (maintaining controlled conditions within the body) is under involuntary (au...
Edexcel IGCSE Biology: Double Science 复习笔记 2.10.1 Homeostasis Response to Change: Homeostasis Homeostasis is the control or regulation of the internal conditions of a cell or organism So...
Edexcel IGCSE Biology: Double Science 复习笔记 2.9.2 Excretion in Humans The Organs of Excretion Humans have organs that are specialised for the removal of certain excretory products Excreto...
Edexcel IGCSE Biology: Double Science 复习笔记 2.9.1 Excretion The Need for Excretion in Humans Many of the necessary metabolic reactions that take place within the cells of organisms produc...
Edexcel IGCSE Biology: Double Science 复习笔记 2.8.7 Blood Vessels & the Circulatory System Blood Vessels There are three main types of blood vessel: Arteries Veins Capillaries Sm...
Edexcel IGCSE Biology: Double Science 复习笔记 2.8.6 The Heart Structure & Function of the Heart The heart organ is a double pump Oxygenated blood from the lungs enters the left side of ...
Edexcel IGCSE Biology: Double Science 复习笔记 2.8.5 Human Transport Systems: White Blood Cells & Immunity White Blood Cells White blood cells are part of the body’s immune system These ...
