Mitochondria

Summary: Respiration happens inside tiny structures inside your cells called mitochondria. All cells contain mitochondria. However, different cells contain different amounts. Muscle cells carry out lots of respiration, so they contain lots of mitochondria. Tags: science student-book-7 biology Created: 2026-05-21 Last Updated: 2026-05-21

Mitochondria

Respiration happens inside tiny structures inside your cells called mitochondria. All cells contain mitochondria. However, different cells contain different amounts. Muscle cells carry out lots of respiration, so they contain lots of mitochondria.

Source

This concept is from the [Science Student Book 7](Science Student Book 7/Biology/Body Systems/2.7 Aerobic respiration.md), Biology section.