Topic 2: Cells (AQA A-level Biology)

This bundle contains 19 PowerPoint lessons which are highly-detailed and are fully-resourced with differentiated worksheets. Intricate planning means that the wide range of activities included in these lessons will engage and motivate the students, check on their current understanding and their ability to make links to previously covered topics and most importantly will deepen their understanding of the following specification points in topic 2 (Cells) of the AQA A-level Biology specification:

• Structure and function of the organelles in eukaryotic cells
• The specialised cells in complex, multicellular organisms
• The structure of prokaryotic cells
• The structure of viruses which are acellular and non-living
• The principles and limitations of optical, transmission electron and scanning electron microscopes
• Measuring the size of an object under an optical microscope
• Use of the magnification formula
• The behaviour of chromosomes during the stages of the cell cycle
• Binary fission
• The basic structure of cell membranes
• The role of phospholipids, proteins, glycoproteins, glycolipids and cholesterol
• Simple diffusion
• Facilitated diffusion
• Osmosis, explained in terms of water potential
• The role of carrier proteins and the hydrolysis of ATP in active transport
• Co-transport as illustrated by the absorption of sodium ions and glucose by the cells lining the mammalian ileum
• Recognition of different cells by the immune system
• The identification of pathogens from antigens
• The phagocytosis of pathogens
• The cellular response involving T lymphocytes
• The humoral response involving the production of antibodies by plasma cells
• The structure of an antibody
• The roles of plasma cells and memory cells in the primary and secondary immune response
• The use of vaccines to protect populations
• The differences between active and passive immunity
• The structure of the human immunodeficiency virus and its replication in helper T cells
• How HIV causes the symptoms of AIDS
• Why antibiotics are ineffective against viruses
• The use of antibodies in the ELISA test

If you would like to sample the quality of these lessons, then download the eukaryotic animal cells, viruses, microscopes, osmosis, lymphocytes, HIV and AIDS lessons as these have been shared for free.