This activity involves students completing a simple activity to investigate the activity of the enzyme catalase (from yeast) on the decomposition of different concentrations of hydrogen peroxide. Based on ‘Elephant’s Toothpaste’. The activity procedure is outlined and is followed by lots of relevant GCSE Exam questions from AQA, Edexcel and OCR across the GCSE Biology, Chemistry and Combined Science topics of enzyme activity and rate of reaction.

IGCSE Science Content based on the Oxford (AQA) specification. This is also compatible with the Cambridge specification. Contains Biology unit, Organisation. Chemistry unit, Atomic Structure & the Periodic Table. Physics unit, Forces & their Effects. Summarised notes for these units together with Oxford & Cambridge exam questions and answers. A great IGCSE Science study/revision/exam practise aide. (http://www.combiclassroom.co.uk)

A resource booklet for AQA GCSE Biology revision of the nervous system. Consists of content covering GCSE nervous system, AQA exam questions on nervous system and the exam question answers. The booklets are aimed at students attempting to achieve Grade 4 – 8 GCSE. Finding all you require in one place saves time and energy. This can be saved for your revision. Download the booklets, read, highlight, make notes, test yourself with real exam questions and check your answers with the mark schemes. Use all of this to self-assess if you require further support to aid your understanding.

This GCSE Biology/Combined Science revision/consolidation booklet contains content for the first topics of cells and microscopy. GCSE exam questions and answers from AQA, Edexcel & OCR. A great resource to ensure new GCSE students get a great start for their GCSE journey. (http://www.combiclassroom.co.uk)

A great way for students to start the school academic year and their GCSE Science Journey with this starter pack for the academic year 2021 - 2022. The pack contains a study planner for all those important deadlines and study plans, Exam Revision Booklets for the first topics of the first GCSE Modules and Revision Notes for these topics. If you like what you see the full Study Pack is available for free on .

A resource booklet for OCR GCSE Biology revision of Supplying the Cell. Consists of content covering GCSE supplying the cell, OCR exam questions on supplying the cell and the exam question answers. The booklets are aimed at students attempting to achieve Grade 4 – 8 GCSE. Finding all you require in one place saves time and energy. This can be saved for your revision. Download the booklets, read, highlight, make notes, test yourself with real exam questions and check your answers with the mark schemes. Use all of this to self-assess if you require further support to aid your understanding.

A resource booklet for Edexcel GCSE Biology revision of food & enzymes. Consists of content covering GCSE food & enzymes, Edexcel exam questions on food & enzymes and the exam question answers. The booklets are aimed at students attempting to achieve Grade 4 – 8 GCSE. Finding all you require in one place saves time and energy. This can be saved for your revision. Download the booklets, read, highlight, make notes, test yourself with real exam questions and check your answers with the mark schemes. Use all of this to self-assess if you require further support to aid your understanding.