Knowledge Organiser with all the key information for both Combined and Triple Science (with Triple clearly labelled in purple boxes). This is for Topic 3 Biology Genetics. Any feedback would be great and check out my other resources.

Knowledge Organiser for both Combined and Triple (with triple content clearly set out in purple boxes). This is for the Edexcel Biology Topic 4 Natural Selection.

OCR A Level Biology A specification linked lesson on Complex Carbohydrates. This is one lesson of three on carbohydrates for the specification. Lesson Objectives covered: Recall the ring structure and properties of glucose. Describe the structure of starch, glycogen and cellulose molecules. Explain how the structures and properties of glucose, starch, glycogen and cellulose relates to their functions in living organisms. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included).

OCR A Level Biology A lesson on PAG 9 DNA Purification. This is one of seven lessons to meet the specification points for 2.1.3 Nucleotides and Nucleic Acids. Objectives for this lesson: Recall the structure of DNA. Purify DNA by precipitation. Explain the purpose of different stages in the purification of DNA Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.

OCR A Level Biology A lesson on Additional Factors in Enzyme Action. This is one of eight lessons to meet the specification points for 2.1.4 Enzymes. Objectives for this lesson: • Describe the difference between a cofactor and coenzyme. • Explain the role of prosthetic groups in some enzyme-controlled reactions. • Explain the need for coenzymes, cofactors and prosthetic groups in some enzyme-controlled reactions using named examples. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.

OCR A Level Biology A lesson on PAG 4. Rates of Enzyme Controlled Reactions – Substrate Concentration. This is one of eight lessons to meet the specification points for 2.1.4 Enzymes. Objectives for this lesson: • Recall the effect of substrate concentration on the rate of enzyme activity. • Describe a method for investigating the effect of substrate concentration on enzyme activity. • Explain how to carry out a serial dilution, showing any calculations used. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.

OCR A Level Biology A lesson on The Effect of pH & Temperature on Enzyme Action. This is one of eight lessons to meet the specification points for 2.1.4 Enzymes. Objectives for this lesson: • Describe the effect of pH on enzyme activity. • Explain the effect of temperature on enzyme activity. • Calculate the temperature coefficient (Q10) Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.

OCR A Level Biology A lesson on Theories on DNA. This is one of seven lessons to meet the specification points for 2.1.3 Nucleotides and Nucleic Acids. Objectives for this lesson: Recall the process of DNA replication. Know the importance of replication in conserving genetic information in accuracy and describe how random, spontaneous mutations can occur during replication. Evaluate experimental evidence for DNA. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.

This is the first lesson in the Edexcel Combined Biology Topic 8 on Exchange and Transport in Animals. This lesson covers Specification points 8.1, 8.2 and 8.3. There are practice questions and examples on SA:V calculations and a knowledge recall plenary with answers.

OCR A Level Biology A lesson on Dissociation Curves. This is one of ten lessons to meet the specification points for 3.1.2 Transport in Animals. Specification points: 3.1.2 (j) Objectives for this lesson: • Recognise the oxygen dissociation curves for human adult and fetal haemoglobin. • Explain the significance of the different affinities for oxygen. • Understand the changes to the dissociation curve at different carbon dioxide concentrations (the Bohr effect). Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.

OCR A Level Biology A lesson on Heart Dissection PAG 2. This is one of ten lessons to meet the specification points for 3.1.2 Transport in Animals. Specification points: 3.1.2 (e(ii)) Objectives for this lesson: • Recap the internal structures of the heart. • Dissect and examine the mammalian heart. • Draw the internal and external structures of the heart. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.

OCR A Level Biology A lesson on Types of Variation. This is one of eight lessons to meet the specification points for 4.2.2 Classification and Evolution. Specification points: 4.2.2 (f) Objectives for this lesson: State what a null hypothesis is. Describe the different types of variation. Calculate variation using a range of statistical tests. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.

OCR A Level Biology A lesson on Phylogeny. This is one of eight lessons to meet the specification points for 4.2.2 Classification and Evolution. Specification points: 4.2.2 (d) Objectives for this lesson: Define phylogeny and the phylogenetic definition of species. Describe how classification is linked to phylogeny. Interpret phylogenetic trees. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.

OCR A Level Biology A lesson on Changing Population Characteristics. This is one of eight lessons to meet the specification points for 4.2.2 Classification and Evolution. Specification points: 4.2.2 (h) and (i) Objectives for this lesson: Recall how antibiotic resistance develops. Describe the mechanisms by which natural selection can affect the characteristics of a population over time. Explain how evolution in some species has implications for human populations. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.

OCR A Level Biology A lesson on Adaptations. This is one of eight lessons to meet the specification points for 4.2.2 Classification and Evolution. Specification points: 4.2.2 (g) Objectives for this lesson: Define adaptation. Know the different adaptations of organisms to their environment. Explain why organisms from different taxonomic groups may show similar anatomical features. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.

OCR A Level Biology A lesson on Colorimetry and Chromatography. This is one of the lessons to meet the specification points for 2.1.2 Biological Molecules. Objectives for this lesson: Determine the glucose concentration of an unknown solution. Use your results to create a calibration curve and determine the glucose concentration of the unknown solution. Set up paper chromatography to identify the amino acids present in the mixture. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included).

OCR A Level Biology A lesson on PAG 5 - Colorimetry. This is the required practical activities to meet the specification points for 2.1.2 Biological Molecules. Objectives for this lesson: Describe how colorimetry can be used to determine glucose concentration. Determine the glucose concentration of an unknown solution. Interpret the results of the experiment and write a conclusion. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included).

Designed for the OCR A Level Lesson 6.4 on the organisation and specialisation of cells. As this is a topic students should have recall of from GCSE it is designed with brief introduction and then students work independently to make notes using the questions provided and their text books. I have introduced Cornell notes for this to provide students with an alternative method of note taking. Answers to questions provided.

OCR A Level Biology A lesson on Electrical Control of the Cardiac Cycle. This is one of ten lessons to meet the specification points for 3.1.2 Transport in Animals. Specification points: 3.1.2 (g) Objectives for this lesson: • State the parts of the heart involved in control of the heartbeat. • Describe the roles of the SAN, AVN and purkyne tissue. • Explain how heart action is initiated and coordinated. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.