Tiny Cells, One Body
Age 10 · Health
Your body is made of billions of tiny living cells. Each one does its own small job, and together they keep you moving, breathing and thinking.
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Age 10: open this week
Browse Age 10In the picture
- A single cell: one tiny living unit of the body
- A knot of cells in the chest: a group beating together as a heart
- Cells lined along the arm: a team pulling together as a muscle
Examples
- Cells in your cheek replace themselves in about a month.
- Cells in your stomach make acid that breaks down your lunch.
Key takeaways
- Every part of you is built from cells.
- Cells work in groups, and groups cooperate.
Quiz: Tiny Cells, One Body (Age 10)
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What is your body made of?
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How do cells keep your body working?
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What does the card teach about the heart?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
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