Biological molecules (Edexcel SNAB)

This lesson bundle contains 10 lessons which have been designed to cover the Pearson Edexcel A-level Biology A (Salters Nuffield) specification points which focus on the structure and function of the biological molecules, including water, carbohydrates, lipids and proteins. The lesson PowerPoints are highly detailed, and along with their accompanying worksheets, they have been planned at length to contain a wide range of engaging tasks which cover the following A-level Biology content that’s found in topics 1, 2 and 4 of the course:

1.2: Understand the importance of water as a solvent in transport, including its dipole nature
1.12 (i): Know the difference between monosaccharides, disaccharides and polysaccharides, including glycogen and starch (amylose and amylopectin)
1.12 (ii): Be able to relate the structures of monosaccharides, disaccharides and polysaccharides to their roles in providing and storing energy
1.13: Know how monosaccharides join to form disaccharides (sucrose, lactose and maltose) and polysaccharides (glycogen and amylose) through condensation reactions forming glycosidic bonds, and how these can be split through hydrolysis reactions
1.14 (i): Know how a triglyceride is synthesised by the formation of ester bonds
during condensation reactions between glycerol and three fatty acids.
1.14 (ii): Know the differences between saturated and unsaturated lipids
2.9 (i): Know the basic structure of an amino acid
2.9 (ii): Understand the formation of polypeptides and proteins (amino acid
monomers linked by peptide bonds in condensation reactions)
2.9 (iii): Understand the significance of a protein’s primary structure in determining
its three-dimensional structure and properties (globular and fibrous proteins
and the types of bonds involved in its three-dimensional structure)
2.10 (iv): Know the molecular structure of a globular protein and a fibrous protein and
understand how their structures relate to their functions (including
haemoglobin and collagen)
4.9: Understand the structure and function of the polysaccharides starch and
cellulose, including the role of hydrogen bonds between β-glucose molecules in
the formation of cellulose microfibrils