Revision Buddies GCSE Biology

£2.99 / year

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The most comprehensive self assessment revision app for GCSE Biology.

Key Features:

– Option to choose core or additional of the AQA, Edexcel or OCR 21st Century Science exam boards
– 1000s of syllabus specific multiple choice questions with detailed explanations
– Hundreds of illustrated diagrams, graphs & experiments
– Choose to repeat difficult questions or select new ones at random
– Watch your knowledge improve using inbuilt progress reports
– Share your results with friends on Twitter & Facebook
– Direct links to past papers & mark schemes
– Email progress charts to your teacher or upload results through smart integration with applications such as Firefly & Dropbox

An engaging, interactive and effective revision app.


We aim to consolidate knowledge, further understanding and boost confidence in the lead up to GCSE exams. Revise at your own pace, in your own time. Once downloaded, you can use it offline – simply select your syllabus, level and the topics appropriate to you, test your knowledge and find where you need to fill the gaps in your learning


Have a look and see how we can transform your students’ revision experience. Like what you see? Get in touch to find out how we can provide bulk orders direct to your students, regardless of their device, faff free.

Quality Content:

All content has been written & supplied to the highest standard by qualified key stage 4 science teachers. Meticulous efforts have been made to ensure that each topic is relevant to the requirements of the associated Core or Additional double award course of the AQA, Edexcel & OCR 21st Century Science exam boards


Diet & Exercise; Nerves & Hormones; The Use & Abuse of Drugs; Interdependence & Adaptation; Energy Biomass in Food Chains; Waste Materials from Plants & Animals; Genetic Variation & its Control; Evolution

Classification, Variation & Inheritance; Responses to a Changing Environment; Problems of & Solutions to a Changing Environment

OCR 21st Century Science
You & Your Genes; Keeping Healthy; Life on Earth


Cells & Simple Cell Transport – Tissues, Organs & Organ Systems; Photosynthesis, Organisms & the Environment; Proteins, their Functions & Uses; Aerobic & Anaerobic Respiration; Cell division & inheritance; Genetic Disorders & Speciation

The Building Blocks of Cells; Organisms & Energy; Common Systems

OCR 21st Century Science:
The Processes of Life; Growth & Development; Brain & Mind

Testimonials from the series:

From Students:

Really helpful and fun *****
“Really helpful and easy to use, would recommend to anyone about to sit their exams as a way of breaking up a day of samey revision!”

Best revision app on the store *****
“As a student going into my GCSE exams this is the most helpful revision app series on the App Store”

From Parents:

Sooo helpful *****
“Working whilst with two children doing their GCSEs is not easy so being able to rely on this app is great. I wanted to ensure the quality of the content so went through it myself first, quite enjoyed it really!! Looking forward to a few more topics! Thanks”

From Teachers:

“Recommended to my GCSE class for quick revision and reminders. They even added on the Spec’ I asked for. Impressed”

“Your apps are proving very popular with our Y11s including my own nephew who found the science ones very useful this weekend”

Topics covered

This app was created by Dr. Hanna Beyer and Chris Banks. Below is a detailed breakdown of the carefully compiled content that students can pick and choose from:



Diet and Exercise

Ensure you know all there is about diet and exercise: Keeping healthy, the effect of food on health and the effects of lifestyle on disease, exercise and the effects of inheritance on our health; defending against infection, understanding antibiotics, mutations of bacteria and viruses, vaccinations and infectious diseases; the immune system and different forms of medication

Nerves and Hormones

Get yourself top of the class! With this topic you can test yourself on: Understanding IVF and plant hormones in horticulture; the nervous system and human reactions and receptors, sensory neurones, motor neurones, relay neurones, synapses and effectors; control in the human body, including fertility; control in plants

The Use and Abuse of Drugs

Think you know all there is to know about the use and abuse of drugs? This topic covers: Understanding drugs and their uses; addiction; the development of medical drugs and reasons behind testing – e.g. Thalidomide; recreational, illegal, and prescribed drugs; effects of drug misuse; addiction

Interdependence and Adaption

Make sure you know all you need to know on interdependence and adaptation. This topic covers: Adaptations and the fight for survival in plants and animals including in extreme conditions, understanding camouflage, fur thickness or body adaptations to different conditions; indicators of pollution and measuring environmental change

Energy Biomass in Food Chains

Find out all you need to know about energy biomass in food chains, describing food chains and biomass; understanding energy cycles and energy transfer; the Sun as a source of energy

Waste Materials from Plants and Animals

Use this topic to test yourself on the waste materials from plants and animals; decay processes and the balance of waste materials; material cycles; understanding the carbon cycle

Genetic Variation and its Control 

Think you know all there is to know about genetic variation and its control? Test yourself on why organisms are different; understanding genes and inheritance; genetic and environmental characteristics; sexual and asexual reproduction; cloning techniques and genetic modification


Get to grips with evolution, the consideration of different theories of evolution such as Darwin and Lamarck; species and the similarities and differences between organisms; natural selection


Classification, Variation and Inheritance

Become top of the class in this topic on classification, variation and inheritance and test your knowledge on: the classification of organisms; the main characteristics of the five kingdoms; understanding viruses; vertebrates; the complications involved in classifying species; using keys to identify species; understanding Darwin’s theory of evolution; understanding variation; the validation of scientific theory; chromosomes, genes and alleles; understanding terminology such as dominant, recessive, homozygous heterozygous etc. and inherited characteristics; genetic disorders; interpreting patterns and analyse outcomes using a genetic diagram, Punnett squares and family pedigrees

Responses to a Changing Environment 

Think you know all there is to know on responses to a changing environment? Make sure you know you know by downloading this topic which covers: homeostasis and the maintenance of a stable environment; thermoregulation; the use of hormones in regulations within the body; understanding type 1 and 2 diabetes; phototropism and gravitropism in plants; auxins and gibberellins; using plant hormones; the nervous system; the structure and function of dendrons and axons; stimulation of receptors; the structure and function of sensory, relay and motor neurones

Problems and Solutions to a Changing Environment

Get to grips with the problems of and solutions to a changing environment. Further your understanding on: drugs and their effects on the central nervous system including psychological behaviour and addiction; differentiation between painkillers, hallucinogens, stimulants and depressants; the chemicals involved in smoking; the harmful effects of alcohol abuse; evaluation of data of certain drugs and its correlation with human health; the ethics of organ transplants;  infectious disease and pathogens; the immune system; antibiotics;  interdependence, biomass and the food chain; human populations and their contribution to pollution; using indicator species;  recycling; the carbon cycle; understanding nitrogen

OCR 21st Century Science

You and Your Genes

Need to check you know all there is to know on You and Your Genes? Use this topic to test yourself on: Understanding genes; sex chromosomes and DNA; inheritance; the interplay between genes and the environment; sexual reproduction as a source of variation; interpretation of genetic diagrams; dominant and recessive alleles; Huntington’s disease and cystic fibrosis; genetic testing and treating genetic diseases; cloning and stem cells; ethical decisions

Keeping Healthy

Get yourself to the top of the class with this topic on Keeping healthy, including: Disease and resistance, antibodies and memory cells; antibiotics, vaccines and drug testing; the role of the heart and its structure; understanding blood pressure and heart disease; keeping a healthy water balance; understanding hormone and nervous communication systems;  the role of the kidneys; ADH

Life on Earth

Ace your exams on this Life on Earth topic and test yourself on 100s of questions covering: Systems in balance; understanding species and adaptation; food webs; habitat and survival; effects of environmental change; ecosystems; calculating energy transfer in a food chain; the carbon cycle; interdependence of species; the nitrogen cycle; pollution indicators; understanding how life on Earth has evolved; natural selection; Darwin and Lamarck; understanding the importance of biodiversity; sustainability



Cells and Simple Cell Transport – Tissues, Organs and Organ Systems

Get yourself top of the class! With this topic you can test yourself on: Cells, cell structure and their functions in humans and plants; dissolved substances and diffusion; multicellular organisms and the development of systems; muscular, glandular and epithelial tissue; organ systems; epidermal, mesophyll and xylem and phloem tissues in plants

Photosynthesis, Organisms and the Environment

Think you know all there is to know about the use photosynthesis, organisms and the environment? This topic covers: Understanding photosynthesis and how its rate can be limited or increased; the use of glucose in plants; living organisms and their communities; relationships in these communities and factors that influence the distribution of organisms

Proteins, their Functions and Uses 

Make sure you know all you need to know on proteins, their functions and uses. This topic covers: proteins and their functions; amino acids; the use of enzymes and their optimum environment; the production of enzymes and understanding their different functions within the body, in the home and in industry

Aerobic and Anaerobic Respiration

Think you know all there is to know about aerobic and anaerobic respiration? Test yourself on: understanding aerobic and anaerobic respiration; how energy is used by the body; the changes that occur within the body during exercise and the use of anaerobic respiration, the incomplete breakdown of glucose and the production of lactic acid

Cell Division and Inheritance 

Get to grips with: the work of Mendel; using genetic diagrams, including family trees; dominant and recessive alleles; social and ethical issues concerning the use of stem cells from embryos and embryo screening; cell division; mitosis and genetic variation; understanding chromosomes, DNA and characteristics

Genetic Disorders and Speciation 

Make sure you really know your stuff using this topic which covers: Inherited disorders such as polydactyl or cystic fibrosis and their carriers; speciation – old and new species and the development of life on earth; fossils and evidence of early life; extinction and its causes; new species and how they may arise


The Building Blocks of Cells

Be the best! Test yourself on 100s of questions covering the building blocks of cells. This topic covers: understanding the components and the functions within a bacterial and plant cell; defining DNA and its structure and the roles of scientists who discovered it; genetic engineering, its advantages and disadvantages; fertilisation; mitosis and meiosis; cloning as an example of asexual reproduction; amino acids and their different functions, including enzymes; gene mutation and its results; factors effecting enzyme action; understanding the lock and key concept

Organisms and Energy

Need some quick quiz tests on organisms and energy? Use this topic to get to grips with: respiration and the circulatory system; diffusion; aerobic and anaerobic respiration; exercise and its effect on the heart and breathing; photosynthesis and the adaptation of a leaf’s structure for this; factors that affect the rate of photosynthesis; osmosis and root hair cells; evaluating the  distribution of organisms in an ecosystem

Common Systems

Consolidate your learning on Common systems using this topic to test yourself on: evidence for evolution based on the fossil record; understanding growth data; cell division, elongation and differentiation in plants; cell division and differentiation in animals; the function of parts of the blood; tissues, organs and organ systems; the structure of the heart and its function; the circulatory system; functions of the digestive system; peristalsis; digestive enzymes such as amylase and proteases; evaluation of claimed benefits of the use of functional foods such as probiotics as part of a healthy diet

OCR 21st Century Science

The Processes of Life

Want to ace your exam on the processes of life? Use this topic to test yourself on all there is to know about: chemical reactions in living things; reactions in cells; the role of enzymes; understanding how plants make food; photosynthesis; cell structures for photosynthesis; osmosis, active transport and diffusion; how living organisms obtain energy; aerobic respiration; anaerobic respiration; cell structures for respiration and limiting factors

Growth and Development

100s of illustrated multiple choice questions and in depth explanations to further your knowledge on: the development of organisms; embryo development; cell specialisation in plants and animals; plant growth responses; the production of new cells; main processes of the cell cycle; comparisons of mitosis and meiosis; the role of genes in the growth and development of a cell; structure of genetic code and mechanisms for protein synthesis

Brain and Mind

Think you know your neurons from your synapses? Use this topic to test yourself on: responses to the environment; co-ordination of responses to stimuli via the central nervous system; the nervous system and the structure of neurons; transmission of electrical impulses, including synapses; effects of Ecstasy on synapse action; conditioning  and simple reflex actions for survival; the mechanism of a reflex arc; conditioned reflexes; complex behavioural patterns, the formation of neuron pathways and learning through repetition; mapping brain function; models for understanding memory

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