Mon Prof Augmenté
Oxygen In, Carbon Dioxide Out
Age 15 · Health
Body cells need oxygen to release energy from nutrients. They produce carbon dioxide, which blood carries away.
This picture is part of the full library
Every lesson is open to everyone for 7 days after it is published. This one came out on September 16, 2026: its text stays readable here, and its picture opens with a subscription.
The app is free. A subscription opens every lesson, in every school year.
Age 15: open this week
Browse Age 15
In the picture
- Cell membrane: the boundary that oxygen and carbon dioxide cross.
- Blue dot: an oxygen molecule that enters the cell.
- Grey dot: a carbon dioxide molecule that leaves the cell.
- Red disc: a red blood cell that carries oxygen and carbon dioxide.
- Vessel wall: the tube that holds blood cells and dissolved gases.
Examples
- A runner’s leg muscles take in more oxygen and release more carbon dioxide during a sprint.
- Holding your breath lets carbon dioxide build up until you feel the urge to breathe.
Key takeaways
- Cells use oxygen to release energy from nutrients.
- Blood removes carbon dioxide from cells.
Quiz: Oxygen In, Carbon Dioxide Out (Age 15)
-
What do body cells use oxygen for?
-
What happens to carbon dioxide made by body cells?
-
According to the card, what does a red blood cell do?
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.
Get the app
Free app, optional subscription
App Store Google Play
Carry on in the app
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
Your child’s teacher does not use My Enhanced Teacher yet?
Tell them about it
