mitochondria

• ATP is produced here during aerobic respiration and the energy released from STP drives almost all activities that need energy in the cell
• mitochondria are found in large numbers in cells that are very active and require a lot of energy
• diagram:

  A) matrix

  B) outer membrane

  C) DNA

  D) ribosomes

  E) crista

  F) inner membrane

  
• consists of an outer and inner membrane
• the inner membrane is folded to form cristae which creates a large surface area for the attachment of enzymes involved in ATP production
• between the two membranes is a fluid filled space called the inter membrane space
• the inner part of the mitochondria contains a fluid called the matrix. it contains enzymes which catalyse the reactions of the Krebs cycle which is part of aerobic respiration
• the mitochondria has its own DNA and ribosomes present in the inner part. these are useful as the mitochondria can make its own proteins such as enzymes involved in ATP production. by having its own DNA it means the mitochondria can self-replicate so more can be made