The Two Stages of Photosynthesis Photosynthesis occurs in two stages: the?light-dependent stage, which takes place in the?thylakoids, and the?light-independent stage, which takes place in th...
Required Practical: Investigating Photosynthetic Pigments with Chromatography Chloroplasts contain several different?photosynthetic pigments?within the?thylakoids, which?absorb different wav...
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?...
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...
Maths Skill: Calculating Mean Values & Standard Deviation Descriptive?statistics are invaluable when interpreting data from experiments Some experiments have thousands or millions of dat...
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...
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...
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...
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...
