Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.4.1 Diffusion
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.4.1 Diffusion Diffusion Theory Diffusion is the?movement of molecules?from a region of its?higher?concentration?to a region of its?lower?concentration Molecu...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.3.5 Practical: Enzymes & pH
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.3.5 Practical: Enzymes & pH Practical: Enzymes & pH Amylase?is an enzyme that digests?starch?(a polysaccharide of glucose)?into maltose?(a disacchari...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.3.4 Practical: Enzymes & Temperature
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.3.4 Practical: Enzymes & Temperature Practical: Enzymes & Temperature Amylase is an enzyme that digests?starch?(a polysaccharide of glucose)?into mal...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.3.3 Enzymes
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.3.3 Enzymes Enzymes as Biological Catalysts Enzymes Enzymes are proteins that act as?biological catalysts?to?speed up?the rate of a chemical reaction?without being ...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.3.2 Practical: Food Tests
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.3.2 Practical: Food Tests Practical: Food Tests Preparing a sample Before you can carry out any of the food tests described below, you may need to prepare a ...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.3.1 Carbohydrates, Fats & Proteins
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.3.1 Carbohydrates, Fats & Proteins Chemical Elements Most of the molecules in living organisms fall into three categories:?carbohydrates, proteins and li...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.2.3 Stem Cells
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.2.3 Stem Cells Stem Cells A stem cell is an?undifferentiated cell?of an organism that is capable of dividing to produce many more cells of the same type (undifferen...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.2.2 Specialised Cells
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.2.2 Specialised Cells Cell Differentiation & Specialised Cells The?structural differences?between different types of cells enables them to perform?specif...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.2.1 Cell Structure
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.2.1 Cell Structure Cell Structures Eukaryotic cells have?subcellular structures?contained within their cytoplasm Each cellular structure carries out a?partic...
