A worksheet aimed at A-Level Biology students which begins with a quiz on key word definitions (e.g. habitat, population, community, ecosystem, biotic factor, abiotic factor) and then moves on to the concept of diversity. The worksheet includes an exercise on calculating diversity index for two habitats and subsequent interpretation of results. Keywords: Biodiversity, habitat, population, biotic, abiotic, ecosystem, community, population, diversity index

A resource aimed at GCSE biology students, this worksheet provides a quick review quiz on the basics of the specific immune response followed by a more in-depth focus on the difference between primary and secondary responses with reference to the classic graph showing changes to plasma antibody levels over time. This is an ideal resource to use in order to probe student's understanding of this complex topic and ensure they have properly grasped the essential information. Key words: Immune, vaccination, lymphocyte, primary, secondary, antibody, antigen, pathogen

A starter activity aimed at GCSE Biology students, this worksheet provides eight questions that probe student's understanding of what antibiotics are and how their effects can be seen in the laboratory. The worksheet includes reference to an image of an agar plate with zones of inhibition around different types of antibiotics - ideal as a starter/preparation for a lesson involving this practical activity. Key words: antibiotics, bacteria, Alexander Fleming, zone of inhibition, efficacy, incubation

A mark scheme posted in response to a request from a customer that purchased the nitrogen cycle worksheet: https://www.tes.com/teaching-resource/nitrogen-cycle-11285758

A worksheet to be used as an introduction to enzymes. The weblinks at the bottom of the worksheet link this topic to the some of the neurotoxins and haemolytic toxins found in snake venom - an engaging context to spark the interest of learners.

A resource that provides clear, bullet point facts about the mechanisms behind coronary heart disease and various lung diseases including tuberculosis, asthma, emphysema and pulmonary fibrosis. Additional worksheets are included which provide a list of question prompts for students to research - the answers are given in the original summary worksheet, allowing this resource to be used as a teaching/research activity as well as a simple revision guide

Suitable for A-Level Biology, this worksheet provides a series of questions suitable for use as a plenary, on the causes of lactose intolerance. The questions make synoptic links with other topics including biological molecules and enzymes. Key words: Lactose, enzyme, hydrolysis, milk, glucose, galactose

A twenty question quiz worksheet on the topic of carbohydrates, Suitable for A-Level biology students, this quiz would be a useful starter exercise to recap key vocabulary and definitions at the end of a topic on carbohydrates. Key words: Carbohydrates, glucose, benedict's, reducing sugar, non reducing sugar, glycogen, cellulose, amylose, amylopectin, starch

A worksheet that can be used as a starter or plenary after the first lesson on A-Level Biology carbohydrates. Two different versions of the worksheet are provided with slight differentiation on the factual recall of alpha glucose structure. Keywords: alpha glucose, maltose, condensation, hydroxyl, functional group, monosaccharide

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 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 A-Level Biology students which provides a neat summary of the key points in the Nitrogen Cycle. The resource covers naming of key compounds (nitrate, nitrite, ammonia, ammonium ions), deamination, ammonification, decomposition and denitrification. The resource also has two 'challenge' questions for more able students to apply their knowledge. Key words: Nitrogen cycle, ammonia, nitrite, nitrate, ammonium, deamination, ammonification, decomposition, denitrification

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 resource aimed at advanced biology students, this is a table that displays the structural formulae of various biological molecules, including triglyceride fats, cellulose, amylopectin, a tripeptide, maltose and sucrose. Students are required to identify each molecule and also which enzyme is responsible for breaking it down plus the breakdown products.