Worksheet starter task to recap the basics of amino acid structure

This resource is aimed at A-Level Biology students and lists the mechanisms behind each of four different lung diseases and disorders: asthma, tuberculosis, pulmonary fibrosis and emphysema. As well as being a useful collection of revision notes in itself, the task here is for students to explain how each of these diseases causes a reduced tolerance to exercise - this is often asked in exam questions and requires students to apply their knowledge of Fick's Law. Each disease will impact on surface area, concentration gradient and/or thickness of exchange surface thereby reducing the rate of diffusion; the challenge is for students to explain this

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 aimed at either level 2 or level 3 science students, this single page worksheet provides a series of questions that students should answer as they watch a video demonstration of alpha, beta and gamma radiation. This resource is very useful for occasions where suitable practical demonstration equipment and radioactive sources are not available. The worksheet covers the nature and behaviour of alpha, beta and gamma radiation and is suitable for use as a lesson starter.

A resource aimed at advanced biology students, this is a practical activity worksheet that concisely describes the classic experiment involving methylene blue as an artificial hydrogen acceptor in respiration. The experiment involves setting up three test tubes (two with yeast and methylene blue, one without yeast as a control) and observing the decolouration of methylene blue as it is gradually reduced due to the respiratory activity of yeast. The activity sheet contains the technical details of solutions required, a table for students to record their observations and a series of questions that probe student's understanding of the biochemistry involved with these observations. Answers to the questions are provided on the second, duplicate, worksheet. Key words: Respiration, glucose, NAD, methylene blue, reduction, oxidation, yeast, control

A worksheet aimed at advanced biology students, this is a useful resource to check understanding and factual recall with students following a topic on synaptic transmission. The worksheet includes a sequencing exercise for the main events involved with an excitatory synapse and further questions related to how the synapse functions. Key words: synapse, excitatory, acetylcholine, vesicles, neurotransmitter

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.

A worksheet with method and subsequent questions (including a higher ability challenge question) on the effect of lipase and bile salts on the breakdown of fat present in milk. A good practical activity for GCSE and A-Level students alike, which demonstrates the impact of bile as an emulsifying agent. Key words: phenolpthalein, milk, ph, bile, fat, triglyceride, temperature, lipase

A worksheet aimed at advanced biology students, this resource consists of eight questions that focus on both multiple alleles and codominance. The examples chosen include fur colour in cats, hair colour in cattle and the appearance of the (fictional) American Bigfoot! A good resource to use as either a starter or plenary exercise to test understanding of either codominance or multiple alleles and phenotypic ratios. Key words: genetics, phenotype, codominance, multiple alleles, monohybrid

An activity aimed at advanced level biology students, this resource provides a detailed step by step set of instructions for students to construct their own detailed models of cells undergoing meiotic cell division. The activity provides an excellent way for students to clarify their understanding on how chromosomes behave and appear at different stages of meiosis and how haploid cells are produced from diploid cells. The second page of the activity provides a template of cell diagrams which can be printed out on A3 paper and used as a template for student to attach their models. Once complete, students can then copy a diagram of their model or take a photograph to record their work. The activity also contains an extension task which asks students to consider the impact of independent assortment of chromosomes. Please note that this activity requires two sets of pipecleaners (each of different colours and some adhesive white labels to identify genes carried on each pipecleaner 'chromosome'.

A ten question multiple choice test aimed at advanced level biology students as a way of assessing their knowledge and understanding of photosynthesis.

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

Science students often struggle to understand the concept of a control investigation, something which is regularly examined by most exam board specifications. This worksheet explains clearly what a control investigation is and then provides several practice investigations which require students to describe a suitable control. Finally, the worksheet provides an extra 'challenge' question for more able students to describe how control experiments were important in establishing the germ theory of disease and debunking the myth of spontaneous generation.

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

This guidance sheet is for use in lesson as an introduction to muscles and the features of synovial joints. The dissection is broken up into several different tasks, each of which have follow up/extension questions that encourage students to make cross links with other topics. Muscles, bone, cartilage, ligaments and tendons are all covered in this activity.

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

This worksheet is aimed at either GCSE or A-Level students studying microbiology. The worksheet is an ideal lesson starter to use following preparation and incubation of agar plates that have been inoculated with bacteria (from unpasteurised milk in this example, but easily adaptable for any other source of bacteria). The worksheet introduces the idea of binary fission and the concept of a visible colony being made of many thousands of individual bacterial cells. The worksheet also includes an activity on counting bacterial colonies and estimating numbers based on dilutions that would set students up well for a subsequent lesson where they did this activity using their own agar plates. Key words: Agar, bacteria, colony, estimate, milk, pasteurisation, binary fission

A resource aimed at advanced biology students, this worksheet provides a written schedule for the extraction of chlorophyll from leaves followed by analysis via chromatography. Rf values for various pigments are included in a reference table (including chlorophyll a, chlorophyll b, phaeophytin, xanthophyll and carotene); students can attach their chromatograms to the worksheet, calculate Rf values for each pigment and identify using the reference table. This is a good practical exercise to cover at the start of a topic on photosynthesis, and emphasises the fact that various pigments are responsible for harnessing light energy during the light dependent reactions. Key words: Light dependent, chlorophyll, Rf value, chromatography, chromatogram, solvent front, extraction, leaf, phaeophytin, xanthophyll, carotene, absorption spectra, action spectrum

An activity aimed at A-Level Biology students. This activity involves a series of statements that can be given to a class at the start of a lesson with the instruction that they draw the nitrogen cycle based on this information. Students should initially do this in pairs but can then be teamed up in larger groups to show, discuss and explain their own diagrammatic interpretations of the nitrogen cycle. Finally, the whole class can be brought together to discuss the best way of joining these statements together into an agreed nitrogen cycle. Key words: Nitrogen, cycle, ammonification, nitrification, denitrification, saprobiont, decay, symbiotic, rhizobium, azotobacter, decomposition, photosynthesis, respiration, combustion, fossilisation, assimilation, feeding, herbivore, carnivore, carbonate