Energy transfers in and between organisms

• Photosynthesis
• Respiration
• Energy and Ecosystems
• Nutrient cycles

Organisms respond to changes in their internal and external environments

• Stimuli, both internal and external are detected and lead to a response 
• Nervous coordination.
• Skeletal muscles are stimulated to contract by nerves and act as effectors
• Homeostasis is the maintenance of a stable internal environment

Genetics, populations, evolution and ecosystems

• Inheritance
• Populations
• Populations in ecosystems         

The control of gene expression

• Alteration of the sequence of bases in DNA can alter the structure of proteins.   
• Gene expression is controlled by a number of features.
• Using genome projects
• Gene technologies allow the study and alteration of gene function allowing a better understanding of organism function and the design of new industrial and medical processes

• Optical isomerism

• Aldehydes and Ketones

• Thermodynamics

• Acids and bases

• Carboxylic acids and derivatives

• Aromatic chemistry

• Electrode potentials and electrochemical cells

• Transition metals

• Amines

• Polymers

• Amino acids, proteins and DNA

• Rate equations

• Equilibrium constant

• Nuclear magnetic resonance spectroscopy

• Chromatography

• Organic synthesis

• Reactions of ions in aqueous solution

• Properties of period 3 elements and their oxides​​​​​​​

Revision and exam practice