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This resource guides a-level biologists through the epigenetics of gene expression. Stretch, challenge and lateral thinking questions are embedded throughout. This is a resource been made to be picked up and used by any teacher. AQA Biology

This resource guides a-level biologists through the structure of the ileum and how it is adapted for the absorption of the products of digestion. The absorption of glucose from topic 4 is recapped before exploring how the body absorbs triglycerides. Stretch, challenge and lateral thinking questions are embedded throughout alongside carefully selected visuals.

This resource guides a-level biologists through the role of haemoglobin in loading and unloading oxygen and how this is represented on an oxygen dissociation curve. How changes in the environment around haemoglobin can effect its shape and affinity are then discussed and explained before looking at different organisms dissociation curves. Stretch, challenge and lateral thinking questions are embedded throughout alongside carefully selected visuals.

This fun resource gets pupils answering clues and questions to complete the cross words on the topics cell structures and specialised cells. Excellent activity to set as a homework task or consolidation task during lesson.

This resource guides a-level biologists through gas exchange of boney fish. The structure of the gills is explored whilst explaining how the counter-current flow system of gas exchange optimises the diffusion of oxygen. Stretch, challenge and lateral thinking questions are embedded throughout.

This resource guides a-level biologists through the major parts of the digestive system before exploring physical and chemical digestion in more detail. Chemical digestion is then looked into in more depth to discuss the role of enzymes in the digestion of three different macromolecules. Stretch, challenge and lateral thinking questions are embedded throughout alongside carefully selected visuals.

This resource guides a-level biologists through the movement of water through a plant via the xylem in a process called transpiration. The role of the stomata is explored before diving into the movement of water through the xylem inlcuding the cohesion-tension theory. Stretch, challenge and lateral thinking questions are embedded throughout alongside carefully selected visuals.

This resource guides a-level biologists through the idea of genetic diversity and the causes of this. We look at allele combinations and frequency with the specific example of the peppered moth through the industrial revolution. Stretch, challenge and lateral thinking questions are embedded throughout. This is a resource been made to be picked up and used by any teacher. AQA Biology

This resource guides a-level biologists through the structure of the HIV virus including how it is replicated and treated. The use of the ELISA test is discussed as well as why antibiotics are ineffective against viruses. Stretch, challenge and lateral thinking questions are embedded throughout. This is a resource been made to be picked up and used by any teacher.

This resource guides a-level biologists through the chemical and receptive control of heart rate. Stretch, challenge and lateral thinking questions are embedded throughout. This is a resource been made to be picked up and used by any teacher. AQA Biology

This resource guides a-level biologists through the structure of the main blood vessels within the circulatory system before looking at how this is related to their individual functions. The formation and return of tissue fluid is also explored. Stretch, challenge and lateral thinking questions are embedded throughout alongside carefully selected visuals.

This resource guides a-level biologists through the appearance of the heart and its associated vessels. This lesson contains key understanding needed for the next lesson 7.5 The Cardiac Cycle. Stretch, challenge and lateral thinking questions are embedded throughout alongside carefully selected visuals.

This resource guides a-level biologists through the mechanism of translocation and how sucrose is moved under mass transport from source to sink. The mass flow theory is broken down into three digestible and understandable steps before exploring the evidence for and against. Stretch, challenge and lateral thinking questions are embedded throughout alongside carefully selected visuals.

This resource guides a-level biologists through the experiments that provide evidence that sugars are carried in the phloem. The concept of ringing experiments are explored before discussing its conclusions. We then move onto how radioactive tracers can be used and look at the conclusions drawn from these experiments. Other evidence such as aphids and cutting of phloem are also considered. Stretch, challenge and lateral thinking questions are embedded throughout alongside carefully selected visuals.

This resource guides a-level biologists through the two types of lymphocyte and how they respond to the presence of a foreign antigen before exploring the process of cell-mediated immunity in more detail. Stretch, challenge and lateral thinking questions are embedded throughout. This is a resource been made to be picked up and used by any teacher.

This resource guides a-level biologists through the nature of a vaccine including the features of an effective vaccination program. Some of the question raised around the issues with vaccinations are discussed in this lesson also. Stretch, challenge and lateral thinking questions are embedded throughout. This is a resource been made to be picked up and used by any teacher.

This resource guides a-level biologists through the mechanism of breathing including an in depth discussion about the processes of inspiration and expiration. The calculation of pulmonary ventilation is also discussed. Stretch, challenge and lateral thinking questions are embedded throughout alongside carefuly selected visuals

This resource guides a-level biologists through the nature of osmosis and how solutes influence water potential. Stretch, challenge and lateral thinking questions are embedded throughout. This is a resource been made to be picked up and used by any teacher.