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...
AQA A Level Biology复习笔记4.6.3 Index of Diversity
The Index of Diversity Once the abundance of different species in an area has been recorded the results can be used to calculate the species diversity or biodiversity for that area Species d...
