A quick test comprising four questions on mark-release-recapture, use of random sampling with quadrats and chi-squared statistical analysis. Useful at the end of a series of lessons on ecology as a quick review of key principles. The assessment includes answers to all the questions. Key words: chi-squared, mark-release-recapture, random sampling, quadrats, ecology, test, exam, answers, quiz

A worksheet aimed at A-Level Biology students that compares and contrasts pyramids of number with pyramids of biomass. The worksheet requires students to perform simple calculations of total biomass and consideration of the pyramid shapes that result. Key words: biomass, number, pyramid, energy, loss, efficiency

A worksheet aimed at A-Level Biology students that contains questions on ecological sampling techniques: transects, mark release recapture, random sampling, etc. The resource is useful as a revision exercise once these topics have been taught to students. Key words: Ecology, transect, sampling, quadrat, random, mark, release, recapture, bias, representative

Worksheet that discusses how plasmids from bacteria are recombined with donor DNA. The worksheet illustrates how screening for bacteria that have successfully taken up modified plasmids works, along with the use of antibiotic resistant marker genes.

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 worksheet that would serve as a useful summary of the main points regarding polymers of alpha glucose. The worksheet covers the formation of amylose, amylopectin and glycogen. It is suitable for A-Level students of biology. Key words: glycogen, glucose, alpha glucose, polymer, polysaccharide, glycosidic, condensation, hydrolysis

A resource aimed at advanced biology students, these two worksheets bridge the gap between the topics of meiosis and genetics. The first worksheet requires students to recap their knowledge and understanding of meiosis by drawing out the appearance of chromosomes (labelled with genes and alleles) at different stages of cell division. The second worksheet requires students to match definitions to key words (e.g. gene, allelle, homozygous, heterozygous, etc) and identify which characteristics are caused by genetic/environmental factors. Key words: genetics, meiosis, allele, gene, homozygous, heterozygous, gamete, dominant, recessive

A worksheet aimed at higher ability 14-16 students or advanced post 16 biology students, this resource provides a research task for students to independently learn about the topic of thermoregulation. Various prompts are provided along with a set of internet links that students can use for their research. Key words: thermoregulation, vasoconstriction, vasodilation, sweating, shivering, piloerection, homeostasis, negative feedback

A worksheet aimed at A-Level Biology students, ideal as a lesson starter activity. The worksheet looks at energy flow through a cow and requires students to calculate energy losses and energy assimilated as biomass. There are follow up questions that touch on intensive farming and productivity of a grassland pasture. Keywords: Cow, energy, transfer, food chain, farming, biomass, intensive, respiration, photosynthesis, calculate, productivity, kilojoules

A worksheet aimed at A-Level or high ability GCSE biology students, looking at the different trophic levels found in a typical food chain and the reasons why energy is lost at each level. The worksheet also introduces percentage efficiency calculations when calculating energy loss. Useful as either an introduction at the start of this topic or as a revision activity. Key words: Energy, trophic levels, food chains, percentage efficiency, respiration, photosynthesis, decomposers, kilojoules

A summary worksheet that simplifies information required for two statistical tests: chi-squared and 95% confidence limits + standard error. The first pages of the worksheet focus on the need to conduct statistical tests and an understanding of what the mean and standard deviation tells us about data. Key words: standard deviation, mean, chi squared, 95% confidence limits, standard error

A worksheet aimed at A-Level Biology students whereby they must decide which is the appropriate statistical test to use (out of Spearman Rank, 95% confidence limits and standard error and chi-squared). A useful exercise to do with a class once the principles of these statistical tests has been taught; can students confidently decide which is the appropriate test to use?

A worksheet aimed at advanced biology students, the first page of this resource provides a sequencing activity on the topic of DNA replication. The second page of the worksheet focuses on evidence for semi-conservative replication and requires students to follow the work of Meselsohn and Stahl by colouring radioactively labelled strands of DNA in successive generations.

A resource aimed at advanced level biology students, this worksheet provides a research task on the theory, mechanisms and applications of DNA fingerprinting. Several questions/prompts are provided along with weblinks to online resources for students to use during their research. Keywords: DNA, fingerprinting, restriction fragment length polymorphism, microsatellite, short tandem repeat, unique, forensic, paternity

A worksheet aimed at advanced biology students, this resource consists of 23 questions relating to the topic of translation/protein synthesis. Each question requires a single word answer. This is a good exercise to reinforce key vocabulary. The final few questions focus on the words associated with cancer and loss of control of the cell cycle.

A starter/plenary worksheet that can be used to recap the events of action potential generation, propagation of an impulse and factors affecting speed of impulse transmission Key words: impulse, nerve, action potential, transmission, propagation, speed

A resource aimed at advanced biology students that looks at how organisms (a kagaroo rat is used as an example) in desert environments have both physiological and behavioural adaptations to cope with their environment. Key words: osmoregulation, behavioural, physiological, desert, water potential, osmosis, kidney, loop of Henle, cortex, medulla, sweating

A comprehensive four-page worksheet that deals with the physiology and function of the liver. This resource is aimed at advanced biology students and begins with a synoptic starter task that examines how blood flows through major body organs and the overall role of the liver in the mammalian circulatory system. The worksheet then moves on to look at gross anatomy of the liver and microscopic histology of the liver, covering details of the the liver lobules, bile canaliculi, sinusoids, hepatocytes and Kupffer cells.

A worksheet aimed at advanced biology students, this resource provides 27 questions on the topic of gas echange across insects, amoeba, fish and mammals. Each question requires a simple one or two word answer. This is a useful exercise to use as a starter recap on the basics once these topics have been taught. Key words: gas exchange, fish, amoeba, insects, mammals

A resource aimed at advanced biology students, this worksheet provides an overview of the nervous system including how different parts are categorised, how nerve impulses are relayed around the body and the structure of different types of neurones. A useful exercise to give to students at the start of a topic on the nervous system. Key words: nervous system, neurones, relay, sensory, motor, cns, pns, autonomic, reflex arc, sympathetic, parasympathetic