OCR A Level Biology A lesson on Primary Defences and Phagocytes. This is one of thirteen lessons to meet the specification points for 4.1.1 Communicable Diseases, disease prevention and the immune system. Specification points: 4.1.1 (d) Objectives for this lesson: • Define primary defence. • Describe the primary non-specific defences against pathogens in animals. • Explain the methods of secondary defence against pathogens in animals. 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 Autoimmune Diseases. This is one of thirteen lessons to meet the specification points for 4.1.1 Communicable Diseases, disease prevention and the immune system. Specification points: 4.1.1 (k) Objectives for this lesson: • Define autoimmune disease. • Describe examples of autoimmune diseases. • Evaluate information on a named autoimmune disease. 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 Biodiversity. This is one of nine lessons to meet the specification points for 4.2.1 Biodiversity. Specification points: 4.2.1 (a) Objectives for this lesson: Define species, habitat and biodiversity. Describe the different levels of biodiversity. Explain, with examples the different levels of biodiversity. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.

I created this worksheet as a support sheet for students struggling with drawing Punnett squares in the genetics topic. This worksheet is best printed off on A3 and works to walk students through the steps involved in determining the alleles of the parents and creating a Punnett square to determine the probability of certain outcomes. The layout is in a style that allows students to easily follow the process. Have used a similiar format in the past on calculation style questions in physics and drawing ionic bonds in chemistry and students loved it! I have also included the answer sheet to go with it.

OCR A Level Biology A lesson on DNA Structure and Modelling. This is one of seven lessons to meet the specification points for 2.1.3 Nucleotides and Nucleic Acids. Objectives for this lesson: Describe the structure of DNA. Understand the synthesis and breakdown of polynucleotides. Explain why DNA has a ‘double helix’ shape. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.

This is designed for the OCR A Level Biology A Module 2.1.3 Nucleotides and Nucleic Acids. SLOP Booklet and Answers. It is a 37 page workbook for students to fill in and also has exam questions for each lesson. There is also answer books included. This workbook was designed with my lessons, so please check them out as well. Please leave a review.

This is designed for the OCR A Level Biology A Module 2.1.4 Enzymes SLOP Booklet and Answers. It is a 47 page workbook for students to fill in and also has exam questions for each lesson. There is also answer books included. This workbook was designed with my lessons, so please check them out as well. 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 Substrate and Enzyme concentrations on Rate of Reaction. This is one of eight lessons to meet the specification points for 2.1.4 Enzymes. Objectives for this lesson: • Describe the effect of enzyme concentration and substrate concentration on enzyme activity. • Draw and interpret graphs for rates of reaction. • Estimate the initial rate of reaction from a graph. 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 Structure & Function of Gas Exchange System in a Bony Fish. This is one of eight lessons to meet the specification points for 3.1.1 Exchange Surfaces. Specification points: 3.1.1 (f) Objectives for this lesson: • Describe the structure of gas exchange system in a bony fish. • Explain how ventilation works in fish. • Compare and contrast the human and fish respiratory system. 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 Histology of Gas Exchange System. This is one of eight lessons to meet the specification points for 3.1.1 Exchange Surfaces. Specification points: 3.1.1 © and (h) Objectives for this lesson: • Recall the main components of the mammalian gaseous exchange system. • Explain the functions of the components of the gaseous exchange system. • Examine practically the histology of the gaseous exchange system. 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 Haemoglobin – Role and Reactions. This is one of ten lessons to meet the specification points for 3.1.2 Transport in Animals. Specification points: 3.1.2 (i) Objectives for this lesson: • Know the role of haemoglobin in the transportation of oxygen and carbon dioxide around the body. • Explain how carbonic anhydrase, haemoglobinic acid, HCO3- and the chloride shift are involved in oxygen and carbon dioxide transport. • Understand that oxygen molecules bind reversibly to haemoglobin. 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 6 - Chromatography. This is one of the lessons to meet the specification points for 2.1.2 Biological Molecules. Objectives for this lesson: Describe the principles and uses of paper and thin layer chromatography to separate biological molecules/compounds. Analyse the paper chromatography and calculate the Rf value for each amino acid. Interpret the results to identify the amino acids present in the solution. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included).

OCR A Level Biology A lesson on Immunity. This is one of thirteen lessons to meet the specification points for 4.1.1 Communicable Diseases, disease prevention and the immune system. Specification points: 4.1.1 (j) Objectives for this lesson: • Give examples of natural and artificial immunity. • Describe how the different types of immunity work. • Compare active and passive immunity. 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 Vaccinations & Herd Immunity. This is one of thirteen lessons to meet the specification points for 4.1.1 Communicable Diseases, disease prevention and the immune system. Specification points: 4.1.1 (l) Objectives for this lesson: • Describe the principles of vaccination. • Explain the role of vaccination programmes in the prevention of epidemics. • Evaluate the issues with vaccines. 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 Role & Molecular Structure of Enzymes. This is one of eight lessons to meet the specification points for 2.1.4 Enzymes. Objectives for this lesson: • State the role of enzymes on both a cellular and whole organism level. • Describe how enzymes affect both structure and function. • Explain the role of enzymes in catalysing both intracellular and extracellular reactions. 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 Non-Specific Immune Response & Blood Smear PAG. This is one of thirteen lessons to meet the specification points for 4.1.1 Communicable Diseases, disease prevention and the immune system. Specification points: 4.1.1 (e (i), e(ii)) Objectives for this lesson: • Recall how to use the light microscope and prepare samples. • Describe the mode of action of phagocytes. • Examine cells from a prepared blood smear and draw cells observed. 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 1 Microscopy. This is one of seven lessons to meet the specification points for 2.1.1 Cell Structure. Specification points: 2.1.1 (b, c & d) Objectives for this lesson: • Describe how to use the light microscope to view a sample. • Produce scientific drawings of samples using the light microscope. • Create a microscope slide of a sample using the correct techniques. Check out my other lessons and the accompanying workbook with exam questions (and answer booklet included). Please leave a review.