A resource suitable for use with both GCSE and A-Level students as a lesson starter, this worksheet provides an account of aseptic technique from an instruction manual; after each step in the instructions, students are required to comment on the reasons why each technique or precaution is necessary. A useful exercise to use at the beginning or an investigation involving microbiology. Key words: aseptic, bacteria, agar, contamination

A worksheet that can serve as either a starter or plenary review of competitive and non-competitive inhibitors. The worksheet ends with a review of end-product inhibition - often missed by students when they revise this topic. Key words: enzyme, inhibitor, active site, competitive, non-competitive, end-product To view more resources: https://www.tes.com/teaching-resources/shop/cmrcarr

A resource aimed at advanced biology students, this worksheet requires students to interpret the British Royal Family pedigree chart and explain the inheritance of haemophilia from Queen Victoria (thought to be where the mutation first arose) onwards. Keywords: pedigree, chart, genetics, haemophilia, gene, allele, mutation, probablility

A comprehensive six page worksheet aimed at advanced biology students, this resource tells the story of how the work of several scientists ultimately led to the discovery and understanding of DNA. The worksheet includes diagrams, images and information relating to classic experiments performed by scientists (including Friedrich Meischer, Fred Griffiths, Oswald Avery, Alfred Hershey, Rosalind Franklin, James Watson and Francis Crick.

A single page method sheet for carrying out the reducing sugar and non-reducing sugar test. This resource would be suitable as a concise guide to the these biochemical tests and is aimed at Advanced Level biology students or BTEC Level 3 students.

An activity aimed at either advanced level biology students or level 3 BTEC applied science students, this resource provides a nice, quick and simple activity that illustrates the primary, secondary, tertiary and quaternary structure of proteins - using nothing more than paper and sellotape! This activity provides a way in which students can see the three dimensional structure of protein for themselves - once the activity is completed, the teacher can then display ribbon diagrams of proteins (e.g. enzymes, haemoglobin, etc) so that students can see the connection between textbook diagrams and images and their model.

A worksheet starter task aimed at GCSE (14-16 year old) biology students. The worksheet consists of six questions related to the topic of mitosis whereby students are required to sort diagrams showing different stages of cell division and describe key events.

A resource aimed at advanced level biology students (or high ability GCSE students) that provides questions on how different limiting factors affect the rate of photosynthesis. The emphasis is on interpretation of rate of reaction graphs, with logical reasoning being used to identify and explain the main limiting factors. Answers to all the questions are provided on the second page of the worksheet. Key words: limiting factor, photosynthesis, graph, plateau, temperature, carbon dioxide concentration, light intensity

A worksheet aimed at advanced biology students, this resource provides several prompts for students to research and learn about the nature of the nerve impulse and action potential. Extension tasks are also provided along with weblinks to animations and information sources. This is a good activity to set a class as a homework or as an independent learning task prior to teaching of the topic in class. Key words: Nerve, neurone, nerve impulse, action potential, depolarisation, repolarisation, refractory period, resting potential, propagation, sodium, potassium, influx, efflux, membrane

A worksheet aimed at advanced biology students, this worksheet is ideal as a starter task (or alternatively as a homework preparation/background reading exercise) that covers the reasons why meiosis takes place and the nature of gametes produced from meiosis. This is a useful exercise to conduct with students to establish the 'big picture' prior to study of individual stages of meiotic cell division. Keywords: meiosis, chromosomes, interphase, prophase, metaphase, anaphase, telophase, haploid, diploid, reduction division, independent assortment, variation, genetic, evolution

A worksheet aimed at advanced biology students, this resource contains a number of exercises that require students to make measurements from diagrams and calculate magnification. The exercises also require changing the subject of the magnification formula to work out real size of cells and using a scale bar to calculate magnification. Finally. there are questions about the nature of magnification and resolution and the electron microscope.

A worksheet aimed at advanced biology students, this resource provides an exercise on calculating the amount of oxygen unloaded from oxyhaemoglobin when encountering tissues of different oxygen partial pressures. This is a fundamental skill that advanced biology students need in examinations on this topic and so this resource is a useful way to introduce analysis of these graphs. Key words: haemoglobin, oxyhaemoglobin, curve, partial pressure, oxygen, dissociation

A collection of four worksheets aimed at advanced biology students. The first two worksheets require students to suggest appropriate units of measurements for typical investigations and then introduce the idea of converting between millimetres, micrometres and nanometres - an important skill that is required on most exam papers. The last two worksheets require students to practise their skills in making measurements and calculating magnification of cell images and diagrams, including the use of a scale bar.

A worksheet aimed at advanced level biology students, this resource provides a lengthy written passage about the structure and function of cell organelles. The worksheet provides a useful written summary of organelle function in eukaryotic cells for student's revision notes but also requires students to process this information in order to label a diagram of animal cell ultrastructure and explain differences between animal and plant cells.

This worksheet is designed to work with the web-based world mapper resource - an ingenious programme that distorts the world map according to the prevalence of certain factors. For example, if cholera deaths was the selected factor, Africa would be hugely increased in size on the map, whereas North America would shrink to become almost invisible. This worksheet allows students to see the impact of various factors of their own choosing on birth rate, death rate and overall population size. A great way for students to find out for themselves how various factors affect the global population. Key words: Population, geography, death rate, birth rate, disease, economics, religion, biology, map, world, earth, continent, countries, europe, north america, south america, asia, oceania

This is an activity aimed at KS3-4 lower ability students, enabling them to learn the basics of lock and key theory via model building. The resource shows clear learning objectives includes a step by step series of tasks that gradually develop the model, with key questions for students to answer along the way. The resource also includes a personal learning checklist for completion before and after the lesson to show progress, along with a peer assessment sheet for students to assess each other. Key words: enzyme, substrate, lock and key, active site, denaturation, rate, reaction, products, protein, plasticine, personal learning checklist, peer assessment

A resource aimed at Advanced Biology students, this worksheet provides a diagram and questions on how the cardiac cycle is under myogenic control. The worksheet begins with a labelling activity, requiring students to recall key vocabulary such as sino-atrial node, atrioventricular node, Bundle of His and Purkinje fibres. The next task requires sequencing of the appropriate events that occur as electrical impulses are generated within heart muscle. Finally, the worksheet provides some questions requiring more detailed understanding as to why these events happen in the order that they do. An ideal resource to use as either a plenary or lesson starter to recap and consolidate knowledge. Key words: sino-atrial node, atrioventricular node, Bundle of His, Purkinje fibres, systole, diastole, atria, ventricles

A resource aimed at Advanced Biology students, this worksheet provides a list of questions related to understanding the events of the cardiac cycle. The questions focus on the characteristic pressure change graph that shows AV valves and semi-lunar valves opening and closing as pressure of blood between artery, atria and ventricles changes. Students often struggle to articulate the difference in pressure as the cause of valves opening and closing; these questions will help to reinforce key concepts. Key words: artery, ventricle, atria, semi-lunar, atrio-ventricular, pressure

A summary worksheet for A-Level Biology comprising three exercises, including calculation of population growth, interpretation of survival curves and interpretation of population pyramids (showing increasing, stable and decreasing population). Key words: Population, pyramid, biology, survival, curves, graph, growth, increase, percentage