One-page set of notes on differential ultracentrifugation to extract organelles, covering homogenization, the ice-cold, buffered, isotonic solution, extracting different organelles and links to recommended videos. This set of notes is particularly targeted towards revising the practical come exam time-it doesn’t go into a detailed practical methodology for fractionation but gives exam-oriented explanation of how a centrifuge works, what a cold, buffered, isotonic solution is and why it’s needed. These notes should be suitable for all major A-level courses, but they’re particularly designed to help AQA students taking into account points on the mark schemes for the 74011 specimen paper Q1, 74023 2018 Q5 and 74011 2018 Q7, which would be great for practice alongside these notes.

Two-page link-up-the-boxes worksheet and two-page written worksheet recapping definitions of community, habitat, ecosystem and biotic/abiotic factors, along with case study questions. For the Edexcel 9-1 biology GCSEs. The link-up-the-boxes worksheet is deliberately written to be very easy for students with low knowledge and confidence. The written worksheet covers biotic factors, quadrats, transects and competition, along with a calculation question and practice identifying types of habitat. Versions for colour and black and white printing and a mark scheme are included. Could also be suitable as a quick recap exercise for A-level students. These worksheets are very similar to my set for AQA, if you tutor both courses you don’t really need the other version. For the Edexcel iGCSE, I intend to do a version of this worksheet specific to that course in future, but for now this worksheet is fine to use; a few questions (10 and 11 on the written worksheet, 3 on the link-the-boxes worksheet) aren’t things students need to memorise but those questions would still be fine for students to do as “suggest” questions.

Worksheet on homeostasis and thyroid function, covering thyroxine, TSH and nutrient deficiencies as well as revising homeostasis and negative feedback generally. This two-page worksheet has plenty of illustrations and diagrams to help students remember the topic. Targets the Edexcel 9-1 biology GCSE. There’s an in-depth mark scheme and versions for colour and black and white printing. Doing AQA? I have a separate version of the worksheet for the AQA course. Doing the Edexcel iGCSE? This worksheet isn’t needed, that course doesn’t go into so much depth on the topic. 2024 update: following feedback from students, added more space for answers.

Two-page worksheet on plant hormones for the AQA 9-1 GCSE. Covers phototropism, geotropism, gibberellins and their industrial uses, ethene and an experiment design question. Versions in colour and for black and white printing. There’s an in-depth mark scheme. Doing a different course? I have similar worksheets for AQA biology A-level, Edexcel GCSE and Cambridge iGCSE.

Worksheet on homeostasis and thyroid function, covering thyroxine, TSH and nutrient deficiencies as well as revising homeostasis and negative feedback generally. This two-page worksheet has plenty of illustrations and diagrams to help students remember the topic. Targets the AQA 9-1 biology GCSE. There’s versions of the worksheet for colour and black and white printing and an in-depth mark scheme. Doing Edexcel GCSE? I have a separate version targeting that course specifically. 2024 update: fixed a glitch with question numbering and following feedback from students, added more space for writing down some answers.

Worksheet for AQA A-level biology plant tropism on two pages, covering IAA, phototropism, gravitotropism, the acid growth hypothesis and an experiment design question. Versions for colour and black and white printing and a detailed mark scheme. Written for the new 2015 specification. Doing a different specification? I have versions for AQA GCSE current specification, Edexcel GCSE and Cambridge iGCSE in a similar style. 2024 update: edited to give students more space for writing answers.

Worksheet on homeostasis and thyroid function, covering thyroxine, TSH and homeostasis and negative feedback generally. This two-page worksheet has plenty of illustrations and diagrams to help students remember the topic and case-study questions. There’s an in-depth mark scheme and versions for colour and black and white printing. Targets the OCR twenty-first Century Science 9-1 GCSE Biology course. I also have versions for AQA GCSE biology and Edexcel GCSE biology.

Worksheet on two pages covering plant disease for the AQA 9-1 biology GCSE specification. Topics include tobacco mosaic virus, Agrobacterium tumefaciens and rose black spot, as well as one calculation practice. Level is fairly basic, without many complicated questions. Versions of the worksheet are included for colour and black and white printing. Pictures, diagrams and mark scheme are included.

Worksheet for Cambridge iGCSE biology plant hormones on two pages, covering IAA, phototropism, gravitotropism, the effects of auxin and an experiment design question. Versions for colour and black and white printing and a detailed mark scheme. October 2024 update: added more space for writing answers.

Two-page worksheet and mark scheme on the use of positron emission tomography scans in medical imaging of the brain and cancer, a topic on the current Edexcel biology GCSE, with a range of diagrams, pictures and links to recommended videos. The worksheet is also suitable for teaching in physics as a case study. Worksheet assumes a bit of basic knowledge of radioactivity and gamma rays (safety precautions, hazards) so may be worth coordinating with physics that those topics have been covered, although it’s only at a common sense level of knowledge. A version of the worksheet converted to black and white is included too. Specification reference: brain and spinal cord problems, B2.11B and B2.12B, higher tier.

One-page set of notes on confocal microscopy targeting A-level biology (especially OCR A) with some selected images and a link to a recommended video. Although suitable for other courses, these notes were specifically targeted at OCR A-level biology A. The focus is on the images produced by confocal microscopy rather than on the details of how the mirror system works. Questions studied writing this pack (and recommended for exam technique) included: AS-level unit 2, question 1 from 2017 AS-level unit 2 specimen, question 6 (MCQ) A-level 2020 paper 1, question 2 (MCQ)

Worksheet for the AQA specification on two pages covering genetic definitions and genetic crosses. Dominant and recessive, alleles and genes and Punnet squares are all covered as questions. Sensitivity note: the worksheet includes cystic fibrosis as a case study. Topic reference: B13.7, 13.8, 13.9. This pack is almost identical to my pack for Edexcel covering this topic, you could use either if you teach both courses.

Worksheet for the Edexcel 9-1 GCSE biology specification on genetic definitions and genetic crosses on two pages. Dominant and recessive, alleles and genes and Punnet squares are all covered. Sensitivity note: the worksheet includes cystic fibrosis as a case study. This pack is almost identical to my AQA pack covering the same content, you could use either if you teach both courses. Specification reference: B3.12, B3.13, B3.14.

Two-page illustrated worksheet on Salmonella bacterial disease, covering infection, effects, epidemiology, treatment and vaccination against bacteria, for the AQA 9-1 GCSE biology specification (B5.7). Versions with images in colour and converted to black and white are included, as well as an in-depth mark scheme.

Two-page link-up-the-boxes worksheet and two-page written worksheet recapping definitions of community, habitat, ecosystem and biotic/abiotic factors, along with case study questions. For the AQA 9-1 biology GCSEs: based on collating past paper questions I’ve found the definitions of the terms are important for students to know, but suitable for other courses. The link-up-the-boxes worksheet is deliberately written to be very easy for students with low knowledge and confidence. The written worksheet covers biotic factors, quadrats, transects and competition, along with a calculation question and practice identifying types of habitat. Versions for colour and black and white printing and a mark scheme are included. Could also be suitable as a quick recap exercise for A-level students.

I’ve found respiration is one of the most important things for students to get right studying biology. The equations are so important, but many GCSE and even some weaker A-level biology students can’t instantly give them. I explain to students that they’re an instant grade boost. Here’s a worksheet and set of notes on one page on the most common respiration questions. There’s the word equations, a guide through the standard question about how your heart and breathing rate change with exercise, and there’s links to some recommended videos. Versions included for colour and black and white printing. Full mark scheme included with the worksheet. Remembering the equations for respiration is one of the last things I always go over with students just before their exams, because it’s such a morale booster to instantly get full marks on one of these questions. I will never forget what one student told me in 2021: “It came up! Exactly what you said, it came up!” Although this worksheet and set of notes works for students taking any exam board and A-level students who need a recap, it was particularly written with an eye to AQA 9-1 GCSE mark schemes. Questions consulted included: 8461/1H 2021, question 7 8461/1F 2020, question 4 8461/2F 2018, questions 7 and 11 BL2HP 2017, question 5 I’ve got a separate set of notes for Edexcel iGCSE which uses the term “lactate” instead of lactic acid. Edit: following feedback from students made worksheet 2 pages to give more space.

I’ve found respiration is one of the most important things for students to get right studying biology. The equations are so important, but many GCSE and even some weaker A-level biology students can’t instantly give them. I explain to students that they’re an instant grade boost. Here’s a worksheet and set of notes on one page on the most common respiration questions. There’s the word equations, a guide through the standard question about how your heart and breathing rate change with exercise, and there’s links to some recommended videos. Versions included for colour and black and white printing. Full mark scheme included with the worksheet. Remembering the equations for respiration is one of the last things I always go over with students just before their exams, because it’s such a morale booster to instantly get full marks on one of these questions. I will never forget what one student told me in 2021: “It came up! Exactly what you said, it came up!” This set of notes targets Edexcel 9-1 iGCSE biology and uses lactate as the standard term rather than lactic acid. I have a version targeted towards other GCSEs such as the AQA course as well. Questions consulted as models for answers included the 1B 2019 and 1BR 2020 papers and 2B 2017. Edit: following feedback from students, made worksheet 2 pages to give students more space.