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Cells and the Human Body
A free video lesson on cells and the human body — what cells are, the parts inside them, how they build up into organs and organ systems, and how some cells are specially shaped for a job. Followed by real quiz questions, marked instantly. No account needed.
What are living things actually made of? This lesson starts with the cell — the smallest unit of life — looks inside animal and plant cells, builds up to the body's organ systems, and explains specialised cells like red blood cells and sperm cells. It is part of Learning Hub, a UK-curriculum learning site built by a home-educating family. Watch, try the questions, then make a free account to unlock every subject.
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Questions parents ask
- What are the main parts of a cell?
- The nucleus controls the cell and holds its DNA, the cell membrane controls what enters and leaves, the cytoplasm is where reactions happen, and mitochondria release energy. Plant cells also have a cell wall and chloroplasts.
- How do cells build up into a body?
- Similar cells form a tissue, tissues form an organ (like the heart), and several organs working together form an organ system (like the circulatory system). The order is cell → tissue → organ → organ system → whole body.
- Is this suitable for KS3 and GCSE?
- Yes. Cells and the human body is a core biology topic for Years 9 to 11 (KS3 and GCSE), and this lesson and quiz work as a clear introduction to it.
- Is it really free?
- The video and these questions are free with no account. The full site — every subject for Years 6 to 11, mock papers, learning games and full reading support for dyslexia — is £6.99 a month for the whole family, with a 14-day free trial and no card needed to start.