Mitochondrion
Leaving Cert Biology · Organisation of Life
Higher Level
A rod shaped organelle with a folded inner membrane where most of aerobic respiration takes place. Cells with high energy demands, such as muscle cells, contain very large numbers of mitochondria.
Ordinary Level
The part of a cell where respiration takes place. It releases the energy that the cell needs.
Biology practice is part of Pro. Reading the definitions here is always free.
More Organisation of Life terms
Get the free study guide
H1 Owl is now on the App Store: download it for iPhone. Sign up here and get The Leaving Cert Maths Game Plan, our free PDF study guide, straight away, plus occasional study tips.
Occasional emails, no spam. Under 16? Ask a parent to sign up for you.
Where next
All Biology terms
The whole Leaving Cert Biology glossary, grouped by strand and labelled by level.
Browse BiologyQuestion of the day
One real Higher Level Maths question, new every day, with the explanation.
Answer today'sThe app
1,700+ original questions across Maths, Biology, Chemistry and Physics. Maths is free.
See the app