3.1.1 State the most frequently occurring chemical elements in living organisms

3.1.2 Apart from the 4 main elements for living organisms which others are necessary?

3.1.3 State one use for each of the elements mentioned explicitly, apart from the 4 main ones.

3.1.4 Draw and label a diagram showing the structure of water molecules to show their polarity and hydrogen bond formation

3.2.1 Distinguish between organic and inorganic compounds

3.2.2 Identify glucose and ribose from diagrams showing their structure

3.2.3 List three examples each of monosaccharides, disaccharides, polysaccharides

3.2.4 State one function of glucose, lactose and glycogen in animals

3.2.4 State one function each for fructose, sucrose and cellulose in plants

3.5.5 What is a condensation reaction?

3.2.5 What is the bond called between two carbohydrates that were joined up by a condensation reaction?

3.2.5 What does a condensation reaction look like between two monosaccharides?

3.2.5 What are lipids?

3.2.2 Identify fatty acids from diagrams showing their structure

3.2.5 What are triglycerides made of?

3.2.5 What is the bond called between glcerol and the fatty acids?

3.2.5 What happens when one of the fatty acids is replaced by a phosphate group?

3.2.6 State three functions of lipids

3.2.7 Compare the use of carbohydrates and lipids in energy storage (similarities)

3.2.7 Compare the use of carbohydrates and lipids in energy storage (differences)

3.2.8 What is a protein?

3.2.2 Identify amino acids from diagrams showing their structure

3.3.1 Draw a nucleotide structure

3.3.2 Which bases are purines and which are pyrimidines?

3.3.3 Outline how the DNA nucleotdes are linked together by covalent bonds into a single strand

3.3.3 What is the link formed between two nucleotides called?

3.3.4 Explain how a DNA double helix is formed