Edexcel IGCSE Biology 复习笔记 2.3.2 Practical: Food Tests
Edexcel IGCSE Biology 复习笔记 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 ...
AQA A Level Biology复习笔记6.1.2 Growth Factors in Flowering Plants
Growth Factors in Flowering Plants Growth responses in plants Just like animals, the survival of plants is dependent on their ability to respond to changes in their environment Some plants p...
Edexcel IGCSE Biology 复习笔记 2.3.1 Carbohydrates, Fats & Proteins
Edexcel IGCSE Biology 复习笔记 2.3.1 Carbohydrates, Fats & Proteins Chemical Elements Most of the molecules in living organisms fall into three categories: carbohydrates, proteins and li...
AQA A Level Biology复习笔记5.4.4 Fertilisers
The Use of Natural & Artificial Fertilisers When organisms in natural ecosystems die or produce waste, the waste and dead matter decompose This decomposition is carried out by saprobiont...
Edexcel IGCSE Biology 复习笔记 2.2.3 Stem Cells
Edexcel IGCSE Biology 复习笔记 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...
AQA A Level Biology复习笔记5.4.3 Microorganisms Role in Recycling Minerals
Microorganisms Role in Recycling Minerals In natural ecosystems, nutrients (such as nitrogen and phosphorus) are recycled through food webs For example, these nutrients get passed on from pr...
Edexcel IGCSE Biology 复习笔记 2.2.2 Specialised Cells
Edexcel IGCSE Biology 复习笔记 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 复习笔记 2.2.1 Cell Structure
Edexcel IGCSE Biology 复习笔记 2.2.1 Cell Structure Cell Structures Eukaryotic cells have subcellular structures contained within their cytoplasm Each cellular structure carries out a partic...
AQA A Level Biology复习笔记5.4.2 Practical Skill: Investigate the Effect of Minerals on Plant Growth
Practical Skill: Investigate the Effect of Minerals on Plant Growth Photosynthesis produces carbohydrates Carbohydrates contain the chemical elements carbon, hydrogen and oxygen, which can b...
Edexcel IGCSE Biology 复习笔记 1.2.5 Pathogens
Edexcel IGCSE Biology 复习笔记 1.2.5 Pathogens Types of Pathogen A pathogen is any microorganism that causes disease in another organism (e.g. in plants or animals) Many microorganisms are pathogen...
AQA A Level Biology复习笔记5.3.10 The Effect of Farming
How Production is Affected by Farming Practices Farming practices can increase the efficiency of energy transfer in order to increase the total amount of energy available for human consumpti...
AQA A Level Biology复习笔记5.3.9 Percentage Yield
Maths Skill: Calculating Percentage Yield Farmers use various strategies to increase the yield of their crops or livestock. These strategies include: Reducing energy losses from crops to oth...
