AQA GCSE Biology Paper 2 Exam Predictions 2026 🧪🧬

Hey everyone! 👋 We hope your revision is going well and, more importantly, that you are taking good care of yourselves. 💖 It’s so easy to get overwhelmed at this time of year, but remember: your mental health is just as important as your grades. Take breaks, drink plenty of water 💧, and get some fresh air 🌳. A calm mind learns better! 🧠✨

We know you're eager to see what might come up, but before we dive into the predictions, we have to start with a very important reminder: Please review the entire specification. 📚 While we use data and patterns to make our best guesses, we haven't seen the papers! Anything on the specification can appear in the exam, so use these predictions to focus your revision, not to limit it.

Supercharge Your Revision! 🚀

Want to feel extra prepared? We highly recommend you download our Predicted Papers. They are designed to give you the practice you need. Plus, they come with free video walkthroughs 🎥! These aren't just answer keys; they show you how to interpret the questions and structure your answers exactly the way examiners want to see them to award those marks. ✅

• Download Predicted Papers & Revision Resources Here!

• Revise with our Unlimited Free Notes & Retrieval Quizzes! 📝

Curious about how we come up with these lists? Check out our blog post on How do we write our Predicted Papers. You might also be wondering, How Accurate Are Predicted Papers? (Spoiler: we put a lot of work into getting them right! 😉).

Don't just take our word for it—our revision resources have over 1,000 5-star reviews! ⭐⭐⭐⭐⭐ See what other students are saying on our Happy Customers page.

• Separate Science Higher Tier Paper 2. AQA GCSE Rev …

• Combined Science Higher Tier Paper 2. AQA GCSE Rev …

• Combined Science Foundation Tier Paper 2. AQA GCSE …

• Separate Science Foundation Tier Paper 2. AQA GCSE …

Separate Science Higher Tier Paper 2. AQA GCSE Revision Guide and 2026 Exam Predictions  🧬🌿

Measuring Biodiversity Practical 🌼

You need to be comfortable using quadrats and transects to measure the distribution and abundance of organisms.

• Random Sampling: Using quadrats with a random number generator to estimate population size in a field.

• Transects: Sampling along a line to investigate how a change in an abiotic factor (like light intensity under a tree) affects distribution.

• Remember how to calculate the mean, median, and mode from your data!

Classification and Evolution 🦕

• The Linnaean System: Kingdom, Phylum, Class, Order, Family, Genus, Species. (Tip: Keep Ponds Clean Or Frogs Get Sick!) 🐸

• Three Domain System: Devised by Carl Woese (Archaea, Bacteria, Eukaryota).

• Evolutionary Trees: Be able to interpret these diagrams to show common ancestors and relationships between species.

Biotic/Abiotic Factors and Adaptations 🌵

• Abiotic Factors (Non-living): Light intensity, temperature, moisture levels, soil pH, wind intensity, CO₂ levels (plants), and O₂ levels (aquatic animals). ☀️💨

• Biotic Factors (Living): Availability of food, new predators, new pathogens, and competition. 🦁

• Adaptations: Can be structural (shape/colour), behavioural (migration), or functional (metabolism/antifreeze in cells).

• Extremophiles: Organisms adapted to live in extreme environments (high pressure, heat, or salt).

DNA, the Genome and Reproduction 🧬

• DNA Structure: A polymer made of two strands forming a double helix. It is contained in chromosomes.

• The Genome: The entire genetic material of an organism. Studying the human genome helps us search for genes linked to disease and trace migration patterns. 🌍

• Sexual Reproduction: Fusion of male and female gametes (sperm/egg or pollen/egg). Involves Meiosis (leads to variation).

• Asexual Reproduction: One parent, no fusion of gametes. Involves Mitosis (leads to genetically identical clones).

Variation and Selective Breeding 🐕

• Variation: Differences in characteristics can be caused by genes, the environment, or a combination of both.

• Mutations: Changes in the DNA code. Most have no effect on the phenotype, but some can change it.

• Selective Breeding: Humans breed plants and animals for particular genetic characteristics (e.g., disease resistance in crops, large milk yield in cows).

• Risks: Can lead to inbreeding, making breeds prone to disease or inherited defects.

The Carbon Cycle ♻️

Carbon is constantly cycled from the air, through food chains, and back out again. Key processes to know:

• Photosynthesis: Removes CO₂ from the atmosphere (Green plants/algae). 🌱

• Respiration: Returns CO₂ to the atmosphere (Plants, animals, microorganisms). 😤

• Combustion: Burning fossil fuels releases CO₂. 🔥

• Decay: Microorganisms break down dead material, releasing CO₂ through respiration.

Inheritance and Genetic Engineering 🧬🔬

• Alleles: Different forms of a gene. Can be dominant or recessive.

• Punnett Squares: Be ready to draw these to predict offspring characteristics!

• Inherited Disorders: Polydactyly (dominant) and Cystic Fibrosis (recessive).

• Genetic Engineering: Modifying the genome of an organism by introducing a gene from another organism to give a desired characteristic (e.g., bacteria producing human insulin).

The Endocrine System and Negative Feedback 🩸

• The System: Composed of glands that secrete hormones directly into the bloodstream to carry messages to target organs.

• Key Glands: Pituitary (master gland), Thyroid, Adrenal, Pancreas, Ovaries, Testes.

• Negative Feedback: A control mechanism where the body reverses a change to bring levels back to normal (like a thermostat).

• Thyroxine: Controls metabolic rate.

• Adrenaline: Prepares the body for 'fight or flight'. 🏃‍♂️

Diabetes 🍬

• Type 1: Pancreas fails to produce sufficient insulin. Treated with insulin injections. 💉

• Type 2: Body cells no longer respond to insulin. Linked to obesity. Treated with carbohydrate-controlled diet and exercise. 🥗

• Control: Know how insulin and glucagon interact to control blood glucose levels.

The Eye (Separate Science Only) 👁️

• Structure: Retina, optic nerve, sclera, cornea, iris, ciliary muscles, suspensory ligaments.

• Accommodation: How the eye changes the shape of the lens to focus on near or distant objects.

• Defects: Myopia (short-sightedness) and Hyperopia (long-sightedness). Know how spectacle lenses correct these. 👓

Cloning (Separate Science Only) 🐑

• Plants: Cuttings (quick/cheap) and Tissue Culture (preserving rare species).

• Animals: Embryo transplants and Adult Cell Cloning (the Dolly the Sheep method!).

Decay Practical (Separate Science Only) 🥛

• Investigating the effect of temperature on the rate of decay of fresh milk by measuring pH change.

• You often use the enzyme lipase and an indicator like Phenolphthalein.

• Remember: Enzymes denature at high temperatures! 🔥

Plant Hormones (Separate Science Higher Only) 🌱

• Auxins: Control growth near the tips of shoots and roots (Phototropism and Gravitropism).

• Gibberellins: Initiate seed germination.

• Ethene: Controls cell division and ripening of fruits. 🍌

• Uses: You need to know how these hormones are used in agriculture (e.g., weed killers, rooting powders, promoting flowering).

Pyramids of Biomass and Energy Transfer (Separate Science Only) ⚠️

• Biomass: The mass of living material. Pyramids of biomass are almost always pyramid-shaped.

• Losses: Biomass is lost between trophic levels (not all ingested material is absorbed, some is lost as faeces, and large amounts of glucose are used in respiration).

• Efficiency: Calculate the percentage of biomass transferred between levels.

Food Security (Separate Science Only) 🌾

• Definition: Having enough food to feed a population.

• Threats: Increasing birth rates, changing diets in developed countries, new pests/pathogens, environmental changes, cost of agricultural inputs, and conflict.

• Sustainable Food Production: Methods to produce food now without compromising the ability to do so in the future (e.g., fishing quotas, restricting net sizes). 🐟

Exam Structure Breakdown 📝

Here is what you can expect when you walk into the exam hall for AQA GCSE Biology Paper 2 (Higher Tier):

• Time: 1 hour 45 minutes ⏰

• Marks: 100 marks 💯

• Weighting: 50% of your GCSE Biology grade.

• Topics Covered: Topics 5–7 (Homeostasis and response; Inheritance, variation and evolution; and Ecology).

• Question Types: A mix of multiple choice, structured, closed short answer, and open response questions.

Good luck, everyone! You’ve put in the work, and you are going to smash it! 👊 Remember to take deep breaths and read every question carefully. We believe in you! 🌟

Don't forget to check out our reviews here: Happy Customers

Combined Science Higher Tier Paper 2. AQA GCSE Revision Guide and 2026 Exam Predictions  🧬🌿

Food Chains 🐇🦊

• Producers: Usually green plants or algae that make their own food via photosynthesis (glucose). They start the food chain.

• Consumers: Primary consumers eat producers; secondary consumers eat primary consumers; tertiary consumers eat secondary consumers.

• Predator-Prey Cycles: In a stable community, the numbers of predators and prey rise and fall in cycles. If the prey population grows, predator numbers will eventually rise (more food!). This eventually causes prey numbers to fall. 📉📈

Measuring Biodiversity Practical 🌼

• Random Sampling: Using quadrats to estimate the population size of a species in a habitat. You must use a random number generator to place the quadrats to avoid bias.

• Transects: Stretching a tape measure across a habitat to investigate how a change in an abiotic factor (like light intensity) affects the distribution of organisms.

• Calculations: Be ready to calculate the mean, median, mode, and estimate the total population based on your sample area. ➗

Classification and Evolution 🦕

• The Linnaean System: The traditional classification hierarchy: Kingdom, Phylum, Class, Order, Family, Genus, Species. (Tip: Keep Ponds Clean Or Frogs Get Sick!) 🐸

• Binomial Naming: The genus and species names (e.g., Homo sapiens).

• Three Domain System: Proposed by Carl Woese. Organisms are divided into Archaea (primitive bacteria), Bacteria (true bacteria), and Eukaryota (includes plants, animals, fungi, and protists).

• Evolutionary Trees: Diagrams used to show how scientists believe organisms are related. The closer the branches, the more recent the common ancestor.

The Endocrine System, Homeostasis and Negative Feedback 🩸

• Homeostasis: The regulation of internal conditions of a cell or organism to maintain optimum conditions for function (e.g., blood glucose, body temperature, water content).

• The Endocrine System: Glands secrete hormones directly into the bloodstream to carry messages to target organs. The Pituitary Gland is the 'master gland'.

• Blood Glucose Control:

  • High Glucose: Pancreas releases insulin, causing glucose to move into cells and be stored as glycogen in the liver/muscles.

  • Low Glucose: Pancreas releases glucagon, causing glycogen to convert back into glucose (Higher Tier only).

• Negative Feedback: A control mechanism that counteracts a change to bring levels back to normal.

Inheritance and Genetic Engineering 🧬

• Alleles: Different versions of a gene. Can be Dominant (capital letter) or Recessive (lowercase letter).

• Genotype vs Phenotype: Genotype is the genetic makeup (e.g., Bb); Phenotype is the physical characteristic (e.g., Brown eyes).

• Punnett Squares: Be prepared to draw these to predict offspring probabilities!

• Genetic Engineering: Modifying the genome of an organism by introducing a gene from another organism to give a desired characteristic (e.g., bacteria modified to produce human insulin).

Pollution and Human Impact 🌍

• Biodiversity: The variety of all the different species of organisms on Earth. High biodiversity helps ecosystems stay stable.

• Waste Management: Pollution can occur in water (sewage/fertiliser), in air (smoke/acid gases), and on land (landfill/toxic chemicals).

• Land Use: Humans reduce land available for other animals by building, farming, quarrying, and dumping waste. 🏗️

• Global Warming: caused by increasing levels of carbon dioxide and methane, leading to climate change and loss of habitat.

Nervous System and Reaction Time Practical ⚡

• The System: The CNS (Central Nervous System) consists of the brain and spinal cord.

• The Reflex Arc: Stimulus → Receptor → Sensory Neurone → Relay Neurone (in CNS) → Motor Neurone → Effector (Muscle/Gland) → Response. Reflexes are automatic and rapid to protect us from harm.

• Synapses: The gap between neurones where chemicals diffuse across.

• Practical: The 'Ruler Drop Test' measures reaction time. Remember to control variables like the height of the drop and the person catching it! 📏

Variation and Selective Breeding 🐕

• Variation: Differences in characteristics can be due to genes, the environment, or a mix of both.

• Mutations: Changes in the DNA code. Most have no effect, but some can change the phenotype.

• Selective Breeding: Breeding plants or animals for specific genetic characteristics (e.g., disease resistance in food crops, animals which produce more meat or milk).

• Risks: Can lead to inbreeding, where breeds are prone to disease or inherited defects.

The Carbon Cycle ♻️

Carbon is constantly cycled from the atmosphere, through food chains, and back.

• Photosynthesis: Removes CO₂ from the atmosphere (Green plants/algae). 🌱

• Respiration: Returns CO₂ to the atmosphere (Plants, animals, microorganisms). 😤

• Combustion: Burning fossil fuels releases CO₂. 🔥

• Decay: Microorganisms break down dead material, releasing CO₂ through respiration.

Exam Structure Breakdown 📝

Here is what to expect when you sit down for AQA GCSE Combined Science (Trilogy) Biology Paper 2 (Higher Tier):

• Time: 1 hour 15 minutes ⏰

• Marks: 70 marks 💯

• Weighting: 16.7% of your total GCSE Combined Science grade.

• Topics Covered: Biology topics 5–7 (Homeostasis and response; Inheritance, variation and evolution; and Ecology).

• Question Types: A mixture of multiple choice, structured, closed short answer, and open response questions.

You've got this! 👊 Keep calm, trust your revision, and remember to read the questions carefully. We are rooting for you! 🌟

Don't forget to check out what other students think: Happy Customers

Combined Science Foundation Tier Paper 2. AQA GCSE Revision Guide and 2026 Exam Predictions  🧬🌿

Food Chains 🐇🦊

• Producers: Usually green plants or algae. They make their own food using sunlight (photosynthesis). They are always at the start.

• Consumers: Animals that eat plants or other animals.

• Predator-Prey: If there is lots of food (prey), the number of predators goes up. If the predators eat too much, the prey numbers go down. It works in a cycle. 📉📈

Measuring Biodiversity Practical 🌼

You need to know how to count plants in a habitat.

• Quadrats: A square frame used to count plants in a field. You must use a random number generator to pick where to put it (to make it fair).

• Transects: Using a tape measure across a field to see if the plants change (e.g., from sunny to shady spots).

• Maths: Be ready to calculate the mean (average).

Classification and Evolution 🦕

• The Linnaean System: How we group living things. Kingdom, Phylum, Class, Order, Family, Genus, Species. (Remember: King Phillip Came Over For Good Soup!) 🍜

• Names: The scientific name is the Genus and species (like Homo sapiens).

• Three Domain System: A newer system: Archaea (old bacteria), Bacteria, and Eukaryota (plants, animals, fungi).

• Evolutionary Trees: Diagrams that look like trees. They show which animals are related to each other.

The Endocrine System and Homeostasis 🩸

• Homeostasis: Keeping the inside of your body steady (like temperature and water levels).

• Hormones: Chemical messengers released by glands into the blood.

• Blood Glucose:

  • If blood sugar is too high, the pancreas releases insulin.

  • Insulin tells cells to take in sugar, so blood levels go down.

• Diabetes:

  • Type 1: Pancreas makes no insulin. Needs injections. 💉

  • Type 2: Body stops listening to insulin. Needs healthy diet and exercise. 🥗

• Negative Feedback: If something goes too high, the body brings it down. If it goes too low, the body brings it up (like a thermostat).

Inheritance and Genetic Engineering 🧬

• Alleles: Different versions of a gene.

  • Dominant: Strong (Capital letter, e.g., B). You only need one to show the trait.

  • Recessive: Weak (Small letter, e.g., b). You need two to show the trait.

• Punnett Squares: Drawing boxes to guess if a baby will have blue or brown eyes.

• Genetic Engineering: Taking a gene from one thing and putting it into another. Example: Putting a human gene into bacteria so they can make insulin for medicine.

Pollution and Human Impact 🌍

• Biodiversity: Having lots of different plants and animals. This is good!

• Waste: Humans produce lots of waste.

  • Water: Sewage and fertilisers.

  • Air: Smoke and acidic gases.

  • Land: Landfill sites and toxic chemicals.

• Global Warming: Carbon dioxide and methane trap heat in the atmosphere. This melts ice caps and changes the climate. 🐻‍❄️

Nervous System and Reaction Time Practical ⚡

• Reflexes: Automatic and fast actions to protect you (like pulling your hand away from a hot pan). You don't have to think about them.

• The Path: Stimulus (heat) → Receptor (skin) → Sensory Neurone → Relay Neurone (spine) → Motor Neurone → Muscle moves.

• Practical: The Ruler Drop Test. You drop a ruler and catch it to measure how fast your reaction time is.

• Control Variables: Make sure you drop the ruler from the same height every time! 📏

Variation and Selective Breeding 🐕

• Variation: Why we all look different. It is caused by genes (eye colour), environment (scars), or both (weight).

• Selective Breeding: Humans choose animals or plants with good traits and breed them together.

  • Examples: Cows that make lots of milk 🥛 or crops that are big.

• Risk: If we do this too much (inbreeding), the animals can get sick easily.

The Carbon Cycle ♻️

Carbon moves from the air to plants and animals, and back again.

• Photosynthesis: Plants take Carbon Dioxide (CO₂) IN. 🌱

• Respiration: Living things breathe CO₂ OUT. 😤

• Combustion: Burning fuels releases CO₂ OUT. 🔥

• Decay: When things rot, CO₂ is released.

Exam Structure Breakdown 📝

Here is what your exam will look like for AQA GCSE Combined Science Biology Paper 2 (Foundation Tier):

• Time: 1 hour 15 minutes ⏰

• Marks: 70 marks 💯

• Topics: Homeostasis, Inheritance, Ecology.

• Questions:

  • Multiple Choice: Tick the box questions. Always have a guess!

  • Short Answers: One or two-word answers.

  • Structured Questions: A mix of simple maths and writing.

Good luck, everyone! You have got this! 👊 Take a deep breath, read the questions carefully, and do your best. We believe in you! 🌟

Check out our reviews here: Happy Customers

Separate Science Foundation Tier Paper 2. AQA GCSE Revision Guide and 2026 Exam Predictions  🧬🌿

Measuring Biodiversity Practical 🌼

You need to know how to count plants and animals in a habitat.

• Quadrats: These are square frames. We use them to estimate how many organisms are in a large field. You need to use a random number generator to pick where to put them!

• Transects: This is using a tape measure across a field. It helps us see if the number of plants changes as you move (e.g., moving from sun to shade).

• Maths: Be ready to calculate the mean (average) and the median.

Classification and Evolution 🦕

• The Linnaean System: How we group living things. Kingdom, Phylum, Class, Order, Family, Genus, Species. (Remember: King Phillip Came Over For Good Soup!) 🍜

• Three Domain System: A newer system by Carl Woese: Archaea (primitive bacteria), Bacteria, and Eukaryota (plants, animals, fungi).

• Evolutionary Trees: Diagrams that show which animals are related to each other.

Biotic/Abiotic Factors and Adaptations 🌵

• Abiotic Factors (Non-living): Things like light ☀️, temperature 🌡️, and water 💧.

• Biotic Factors (Living): Things like food, predators 🦁, and germs (pathogens).

• Adaptations: How an animal or plant changes to survive.

  • Structural: Shape or colour (like camouflage).

  • Behavioural: Actions (like birds migrating).

  • Functional: Things happening inside the body (like a bear's metabolism slowing down during hibernation).

DNA, the Genome and Reproduction 🧬

• DNA: It looks like a twisted ladder (double helix). It is found in chromosomes.

• The Genome: All the genetic material in an organism.

• Sexual Reproduction: Two parents. Sperm meets egg. Offspring are different (variation). 👶

• Asexual Reproduction: One parent. No sperm or egg. Offspring are identical clones.

Variation and Selective Breeding 🐕

• Variation: Why we all look different. It is caused by genes, the environment, or both.

• Selective Breeding: Humans choose which plants or animals to breed. We do this to get useful traits, like cows that make lots of milk 🥛 or crops that don't get sick.

• Problem: If we do this too much, it can lead to inbreeding, where animals are more likely to have health problems.

The Carbon Cycle ♻️

Carbon moves around nature. You need to know these main steps:

• Photosynthesis: Plants take carbon dioxide (CO₂) out of the air. 🌱

• Respiration: Animals and plants breathe out CO₂ back into the air. 😤

• Combustion: Burning fuels (like petrol or wood) releases CO₂. 🔥

• Decay: When things die and rot, CO₂ goes back into the air.

Inheritance and Genetic Engineering 🧬🔬

• Alleles: Different versions of a gene. They can be Dominant (strong) or Recessive (weak).

• Punnett Squares: Make sure you can draw these boxes to guess what colour eyes or hair a baby might have!

• Inherited Disorders:

  • Polydactyly: Extra fingers or toes (Dominant).

  • Cystic Fibrosis: A disorder of cell membranes (Recessive).

• Genetic Engineering: Taking a gene from one thing and putting it into another. For example, we put human genes into bacteria to make insulin for people with diabetes.

The Endocrine System and Diabetes 🍬

• Glands: Organs that release hormones into the blood to carry messages.

• Pituitary Gland: The "Master Gland" in the brain.

• Diabetes:

  • Type 1: The pancreas stops making insulin. You need injections. 💉

  • Type 2: The body stops listening to insulin. Linked to being overweight. You need a healthy diet and exercise. 🥗

• Glucose Control: Insulin helps move sugar from the blood into cells.

Cloning (Separate Science Only) 🐑

• Cuttings: Cutting a piece off a plant to grow a new one. It's cheap and easy. ✂️

• Embryo Transplants: Splitting an animal embryo (like a cow) into two before it grows, so you get identical twins.

Decay Practical (Separate Science Only) 🥛

• You will look at how temperature changes how fast milk goes sour (decays).

• When milk decays, it becomes acidic, so the pH drops.

• Important: If it gets too hot, the enzymes (lipase) stop working (denature) and decay stops.

Plant Hormones (Separate Science Only) 🌱

• Auxins: Hormones that control how plants grow.

• Phototropism: Plants growing towards the light. ☀️

• Gravitropism: Roots growing down towards gravity. 🌍

• Uses: We use auxins in weed killers and rooting powders.

Pyramids of Biomass ⚠️

• Biomass: The weight of living things.

• Pyramids: A diagram showing how much biomass is at each level of the food chain. The bottom bar (producers/plants) is usually the biggest.

• Losses: Biomass gets less as you go up the pyramid because animals produce waste (poo) 💩 and use energy to move and keep warm.

Food Security (Separate Science Only) 🌾

• Definition: Making sure there is enough food for everyone.

• Problems: More people being born, new pests eating crops, and war affecting farming.

• Sustainable Fishing: We need to stop overfishing. We can do this by having "fishing quotas" (limits on how many fish you can catch) and making net holes bigger so baby fish can escape. 🐟

Exam Structure Breakdown 📝

Here is what your exam will look like for AQA GCSE Biology Paper 2 (Foundation Tier):

• Time: 1 hour 45 minutes ⏰

• Marks: 100 marks 💯

• Topics: Homeostasis, Inheritance, Ecology.

• Questions:

  • Multiple Choice: Tick the box questions. Always have a guess if you aren't sure!

  • Short Answers: One or two-word answers.

  • Structured Questions: A mix of maths and writing.

Good luck, everyone! You have got this! 👊 Take a deep breath, read the questions carefully, and do your best. We believe in you! 🌟

Check out our reviews here: Happy Customers