Mitochondria

• The mitochondria is the site of respiration and is primarily responsible for synthesising ATP

Structure:

• Matrix- the site of the Krebs cycle, pH 8, slightly basic
• Inner membrane - contains the ATP synthase port
• Outer membrane - contains porins
• Intermembrane space- site of the electron transport chain

Cytoplasm:

Respiration begins in the cytoplasm; sugars are converted to pyruvate and fats are converted to fatty acids and glycerol

The peroxisomes also produce a small amount of acetylCoA from fatty acids. These products all migrate to the mitochondria to take part in the Krebs cycle

Matrix:

Pyruvate + fatty acids -> acetylCoA (a 2 carbon molecule)

AcetylCoA is then fully oxidised by the Krebs cycle, producing CO2, NADH and FADH2

Electron transport chain:

NADH and FADH2 donate their…