Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.10 The Heart
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.10 The Heart Structure & Function of the Heart The heart organ is a?double pump Oxygenated blood?from the lungs enters the?left?side of the heart and i...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.8 Human Transport Systems: White Blood Cells & Immunity
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.8 Human Transport Systems: White Blood Cells & Immunity White Blood Cells White blood cells are part of the body’s immune system These specialised cells defen...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.9 Vaccinations
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.9 Vaccinations Vaccinations Vaccines are used to?induce immunity?to infectious diseases A vaccine contains?harmless?versions of a pathogen There are severa...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.7 Human Transport Systems: Platelets
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.7 Human Transport Systems: Platelets Platelets Platelets?are involved in?helping the blood clot Platelets are?fragments of cells that are involved in blood...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.6 Human Transport Systems: Red Blood Cells & Plasma
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.6 Human Transport Systems: Red Blood Cells & Plasma Red Blood Cells Red blood cells are?specialised cells?which carry?oxygen to respiring cells They ar...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.5 Human Transport Systems: Blood
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.5 Human Transport Systems: Blood Components of Blood Blood consists of?red blood cells, white blood cells, platelets?and?plasma Over half of the volume of ...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.4 Practical: Factors Affecting Transpiration
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.4 Practical: Factors Affecting Transpiration Practical: Factors Affecting Transpiration We can investigate the effect of different environmental conditions...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.3 Water Movement in Flowering Plants
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.3 Water Movement in Flowering Plants Root Hair Cells Uptake of water into the root Root hair cells?are adapted for the efficient uptake of water (by osmosi...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.8.2 Transport Systems in Flowering Plants
Edexcel IGCSE Biology 復(fù)習(xí)筆記 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 the plant Plants ...
