Mystery #4Tier 2-3cells / energy / respiration
How does a single cell burn food to get the energy it runs on?
You eat a bowl of porridge in the morning, and somehow that turns into the energy to run, think, laugh and grow all day. But you don't burst into flames, and you never feel the food 'burning'. So how does your body unlock the energy trapped inside food, safely, inside cells far too small to see?

Your guess
What's your hunch about how the energy in your breakfast gets released so your body can use it?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.