Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 3.28 - Understand how division of a diploid cell by mitosis produces two cells that contain identical sets of chromosomes. Specification Point 3.29 - Understand that mitosis occurs during growth, repair, cloning and asexual reproduction. Specification Point 3.30 - Understand how division of a cell by meiosis produces four cells, each with half the number of chromosomes, and that this results in the formation of genetically different haploid gametes. Complete set of Chapter 5 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 3.8 - Understand how the structure of the male and female reproductive systems are adapted for their functions. Specification Point 3.9 - Understand the roles of oestrogen and progesterone in the menstrual cycle. Complete set of Chapter 5 Lessons are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.7.4 - Populations in ecosystems. Complete set of Chapter 7 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.7.4 - Populations in ecosystems. Complete set of Chapter 7 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.8.1 - Alteration of the sequence of bases in DNA can alter the structure of proteins. Specification Point 3.8.2.3 - Gene expression and cancer. Complete set of Chapter 8 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.7.4 - Populations in ecosystems. Complete set of Chapter 7 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.8.3 - Using genome projects. Specification Point 3.8.4.1 - Recombinant DNA technology. Complete set of Chapter 8 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.8.4.2 - Differences in DNA between individuals of the same species can be exploited for identification and diagnosis of heritable conditions. Specification Point 3.8.4.3 - Genetic fingerprinting. Complete set of Chapter 8 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.6.1.1 - Survival and response. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.70 - Understand the origin of carbon dioxide and oxygen as waste products of metabolism and their loss from the stomata of a leaf. Specification Point 2.71 - Know the excretory products of the lungs, kidneys and skin. Complete set of Chapter 4 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.1 - Describe the level of organisation in organisms: organelles, cells, tissues, organs and organ systems. Specification Point 2.2/2.3 - Describe the structures and functions of the cell’s organelles, including the nucleus, cytoplasm, cell membrane, cell wall, mitochondria, chloroplast, ribosome and vacuole. Specification Point 2.4 - Know the similarities and differences in the structure of plant and animal cells. Complete set of Chapter 1 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.40B - Understand the role of diffusion in gas exchange. Specification Point 2.41B - Understand gas exchange in relation to respiration and photosynthesis. Specification Point 2.42B - Understand how the structure of the leaf is adapted for gas exchange. Specification Point 2.43B - Describe the role of stomata in gas exchange. Complete set of Chapter 3 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.5B - Explain the importance of cell differentiation in the development of specialised cells. Specification Point 2.6B - Understand the advantages and disadvantages of using stem cells in medicine. Complete set of Chapter 1 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 4.6 - Understand the names given to different trophic levels, including producers, primary, secondary and tertiary consumers and decomposers. Specification Point 4.7 - Understand the concepts of food chains, food webs, pyramids of number, pyramids of biomass and pyramids of energy transfer. Specification Point 4.8 - Understand the transfer of substances and energy along a food chain. Specification Point 4.9 - Understand why only about 10% of energy is transferred from one trophic level to the next. Complete set of Chapter 6 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 4.18B - Understand the effects of deforestation, including leaching, soil erosion, disturbance of evapotranspiration and the carbon cycle, and the balance of atmospheric gases. Complete set of Chapter 6 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 5.5 - Understand the role of yeast in the production of food including bread. Specification Point 5.6 - Practical: investigate the role of anaerobic respiration by yeast in different conditions. Specification Point 5.7 - Understand the role of bacteria (Lactobacillus) in the production of yoghurt. Specification Point 5.8 - Understand the use of an industrial fermenter and explain the need to provide suitable conditions in the fermenter, including aseptic precautions, nutrients, optimum temperature and pH, oxygenation and agitation, for the growth of microorganisms. Complete set of Chapter 7 Lessons are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.6.4.3 - Control of blood water potential. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.5.1 - Photosynthesis. Complete set of Chapter 5 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.5.1 - Photosynthesis. Complete set of Chapter 5 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.5.1 - Photosynthesis. Complete set of Chapter 5 Lectures are available.