GCSE Biology • Higher Tier
GCSE Cells Revision Guide
Cells are the fundamental building blocks of all living organisms. This guide covers everything you need to know about cells for your GCSE Biology exam, including cell structure, specialised cells, cell division, microscopy and cell transport.
Foundation
Exam practice
Worked examples
Your Learning Pathway
Follow these steps to build your understanding and improve your exam technique.
Learn the concept
Read clear explanations in simple language.
Explore diagrams
Visualise key structures and processes.
Check key terms
Learn & review important vocabulary.
Apply exam skills
Build confidence with practice questions and tips.
Learning Objectives
By the end of this guide, you will be able to:
Identify cell structures
Recognise and describe the structures and functions of plant and animal cells.
Explain cell transport
Describe diffusion, osmosis and active transport, and how substances move in cells.
Apply practical skills
Use microscopes, calculate magnification and investigate osmosis in plant cells.
What You'll Learn
Animal vs Plant Cells
Compare cell structures
Organelles & Functions
Explore organelle roles
Specialised Cells
Cells adapted for specific jobs
Cell Differentiation
How cells become specialised
Mitosis
Cell division and growth
Stem Cells
Features and potential uses
Microscopy
Magnification made simple
Cell Transport
Substances cross membranes
Osmosis
Water movement in cells
Active Transport
Moving against a gradient
Animal Cells vs Plant Cells
Plant and animal cells share many structures, but plant cells also have unique features.
- Animal Cell Features
- Cell membrane
- Cytoplasm
- Nucleus
- Mitochondria
- Ribosomes
- Plant Cell Features
- Cell wall
- Chloroplasts
- Large vacuole
- Cell membrane
- Cytoplasm
Microscopy & Magnification
Microscopes allow us to see cells and their structures in more detail.
- Key Points:
- Use visible light.
- Lower magnification (e.g. ×100) to find the specimen.
- Increase magnification for more detail (e.g. ×400).
- Calculate magnification: image size ÷ actual size.
- - More detail can be seen with an electron microscope.
Key Facts to Remember
Three essential facts to remember for your GCSE Biology exam.
Prokaryotic cells have no nucleus.
Their genetic material is a single loop of DNA found in the cytoplasm.
DNA is carried on chromosomes.
Chromosomes are made of DNA and contain the genetic information for the cell.
Surface area to volume ratio affects exchange.
Smaller cells have a larger surface area to volume ratio, allowing faster exchange of substances.
Common GCSE Exam Questions
These are the types of questions you are likely to encounter in your exam.
- 1. Compare animal and plant cells
- 2. Describe the function of cell organelles
- 3. Calculate magnification
- 4. Describe diffusion, osmosis and active transport
- 5. Explain how specialised cells are adapted
- 6. Evaluate practical investigations
- Common GCSE Mistakes
- Confusing diffusion and osmosis.
- Forgetting to mention the partially permeable membrane in osmosis.
- Mixing up plant and animal cell structures.
- Using the wrong units in magnification calculations.
- Exam Tips
- Learn the functions of key organelles.
- Use clear diagrams with labels.
- Include key scientific keywords (e.g. diffusion, osmosis, vacuole).
- Show your working for calculations.
- - Answer the question asked and use the correct number of marks.
Ready to Practice?
Printable Worksheet
Download and print practice questions with answers.
Interactive Quiz
Test your knowledge with instant feedback and hints.
Exam-Style Questions
Timed questions to build confidence for the real exam.
Watch the Cells Tutorial
Explore cell structure and function, the differences between plant and animal cells, and essential processes such as diffusion, osmosis and mitosis. Perfect for visual learners preparing for their GCSE Biology exams.
- 12 minute comprehensive guide
- High-definition whiteboard walk-through
Frequently Asked Questions
Cells are the basic building blocks of all living organisms. In GCSE Biology, students learn about cell structure, organelles, specialised cells, cell division and transport processes. Understanding how cells function is essential for explaining growth, reproduction and the processes that keep organisms alive.
Plant and animal cells both contain a nucleus, cytoplasm, cell membrane, mitochondria and ribosomes. However, plant cells also have a cellulose cell wall, a large permanent vacuole and, in photosynthetic tissues, chloroplasts. These additional structures help plants maintain their shape and carry out photosynthesis.
Cell organelles perform specific functions that help cells survive. The nucleus contains genetic material and controls cell activities, mitochondria are the site of aerobic respiration, and ribosomes produce proteins. The cell membrane controls the movement of substances into and out of the cell, while chloroplasts absorb light for photosynthesis.
Mitosis is a type of cell division that produces two genetically identical daughter cells, each with the same number of chromosomes as the original cell. It is essential for growth, tissue repair and replacing damaged cells. GCSE Biology students should understand the stages of the cell cycle and the importance of mitosis in living organisms.
Diffusion is the net movement of particles from a higher to a lower concentration. Osmosis involves the net movement of water through a partially permeable membrane from a dilute solution to a more concentrated solution. Active transport moves substances against their concentration gradient using energy released by respiration.
To revise GCSE Biology Cells effectively, start by learning cell structures and their functions. Practise labelling plant and animal cell diagrams, calculating microscope magnification and explaining mitosis and cell transport. Review required practical investigations, including osmosis, and complete past-paper questions to improve your exam technique.
