What are mitochondria?
In GCSE biology, mitochondria (singular mitochondrion) are organelles found in the cytoplasm of plant and animal cells. They are responsible for the release of energy from glucose during aerobic respiration.
The number of mitochondria present in a cell will differ depending on cell function. For example, sperm cells require energy for movement, and muscle cells require energy for contraction, so these cell types contain many mitochondria.
Mitochondria revision resources to ace your exams
You can explore more about organelles like mitochondria using our GCSE revision notes, topic questions and flashcards for your specific exam board:
Meet all your GCSE biology revision needs using our revision resources linked below. This includes revision notes, videos, flashcards and exam questions with student-friendly mark schemes.
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