This is a worksheet that focuses on how proteins form increasingly complex structures (primary, secondary, tertiary and quaternary). There are extension questions at the end for the more able. The resource is suitable for A-Level Biology students and would be a useful plenary or starter exercise once a lesson on protein structure had been completed. Key words: Protein, amino acids, condensation, peptide, primary, secondary, tertiary, quaternary, conformation

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

This worksheet provides a series of questions on the topic of lipids and triglyceride fats that could be used as a plenary activity after a lesson on this topic has been taught. Key words:lipids, triglyceride, fats, fatty acids, saturated, unsaturated, lipase

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 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 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

This worksheet serves as a recap of the food tests taught in A-Level Biology: Benedict's test for reducing sugars, ethanol emulsion test for fats, biuret test for protein and the iodine test for starch. The resource can be used as either a starter or plenary to recap the reagents required and the expected observations for a positive test. Key words: iodine, starch, benedict's, reducing sugars, non-reducing sugars, biuret, protein, ethanol, emulsion, fat, hydrolysis

A differentiated worksheet on enzymes that begins by recapping some basic knowledge and then provides a method for an investigation into where catalase is found in different organisms. At the end of the investigation, there are various discussion points on the impact of increasing surface area, the effect of high temperatures and how widespread catalase is as an enzyme in organisms from different biological kingdoms. Keywords: Enzyme, substrate, active site, hydrogen peroxide, denatured, liver, potato, surface area

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 worksheet that reviews the basics of enzymes and also introduces the idea of activation energy. Useful for a lesson review after a first introductory lesson on lock and key theory Keywords: Enzyme, substrate, complex, activation energy, active site, denaturation, protein

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

Worksheet starter task to recap the basics of amino acid structure

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.

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 worksheet that allows students to work through the main points about each blood vessel: artery, arteriole, venule, vein and capillary. Covers aspects of both structure and function of blood vessels.

Biological molecules is often a topic that students struggle with in A-Level Biology. This resource provides a table in which students can pull together all their notes on the different categories of molecules, including carbohydrates, fats and proteins. Nucleic acids are also included as extension and to foster links between different units.

A method sheet that discusses how to extract your own DNA from cheek cells. Highly engaging and suitable as a starter activity for any biology topic involving nucleic acids. Much more interesting than the usual extraction of DNA from Kiwi fruit or onions!

This activity sheet is suitable for A-Level Biology and BTEC Level 3 Science students; it is part of my DRAW IT series and contains a list of descriptions that detail how competitive and non-competitive inhibitors work. Students are tasked with reading each description carefully and then illustrating each description; meanwhile, other students in the class can be given the textbook style diagrams and are asked to provide a written commentary. After both sets of students have finished, they can then be paired up and tasked with comparing their written notes/ illustrations and explain the process to each other. Finally, the lesson can be concluded by asking students to verbally describe each step in the process during a question and answer plenary. I first devised DRAW IT tasks as a way of turning fairly dry subject material into something more interactive and student led. DRAW IT tasks can easily change a teacher led session into a much more engaging, enjoyable and competitive classroom activity.