AQA A Level Biology复习笔记5.1.3 Photosynthetic Pigments
Required Practical: Investigating Photosynthetic Pigments with Chromatography Chloroplasts contain several different photosynthetic pigments within the thylakoids, which absorb different wav...
AQA A Level Biology复习笔记5.1.2 The Light Dependent Reaction
The Light Dependent Reaction Thylakoids Plant cells contain chloroplasts which is the site of photosynthesis Chloroplasts are filled with a fluid known as the stroma The system of membranes ...
AQA A Level Biology复习笔记4.6.9 Genetic Relationships Between Organisms
Interpret Data To Suggest Relationships Between Organisms & Appreciate the Role of Genetic Technologies The gene pool The phenotype of all organisms is dependent on its genotype and envi...
AQA A Level Biology复习笔记4.6.8 Mean & Standard Deviation
Maths Skill: Calculating Mean Values & Standard Deviation Descriptive statistics are invaluable when interpreting data from experiments Some experiments have thousands or millions of dat...
AQA A Level Biology复习笔记4.6.7 Quantitative Investigations of Variation
Quantitative Investigations of Variation Quantitative investigations of variation can involve the interpretation of mean values and their standard deviations A mean value describes the avera...
AQA A Level Biology复习笔记4.6.6 Random Sampling
Apparatus & Techniques: Random Sampling Measuring the different levels of biodiversity within an ecosystem can be a tasking job Finding out which species live in an ecosystem and the siz...
AQA A Level Biology复习笔记4.6.5 Investigating Diversity
Measuring Genetic Diversity A species can be defined as a group of organisms that are able to interbreed and produce fertile offspring Members of one species are reproductively isolated from...
AQA A Level Biology复习笔记4.6.4 Conservation & Farming
The Balance Between Conservation & Farming After the second world war there was a massive change in how food was produced There was a need to produce more food, at a quicker rate In othe...
Edexcel IGCSE Maths 复习笔记 4.11.1 Area - Formulae
Edexcel IGCSE Maths 复习笔记 4.11.1 Area - Formulae What is area and why do we need to calculate it? Area is the amount of space taken up by a two-dimensional shape Volume deals with three-dimensio...
