KEY CONCEPT The overall process of cellular respiration converts sugar into ATP using oxygen.

Cellular respiration makes ATP by breaking down sugars. Cellular respiration is aerobic, or requires oxygen. Aerobic stages take place in mitochondria. mitochondrion animal cell

The equation for the overall process is: C6H12O6 + 6O2  6CO2 + 6H2O The reactants in photosynthesis are the same as the products of cellular respiration.

Glycolysis is the first stage in cellular respiration.

Glycolysis is the first stage in cellular respiration. anaerobic process (does not require oxygen) takes place in cytoplasm splits glucose into two three-carbon molecules called pyruvates pyruvates

There is a preparation step that must take place between glycolysis and Kreb’s cycle.

There is a preparation step that must take place between glycolysis and Kreb’s cycle. This preparation step changes pyruvates into Acetyl CoA This step moves us from the first stage of cellular respiration to the second stage.

The Krebs cycle is the first step of the second stage of cellular respiration.

The Krebs cycle is the first step of the second stage of cellular respiration. The Krebs cycle is aerobic and takes place in the mitochondrial matrix. breaks down three-carbon molecules from glycolysis makes a small amount of ATP (1 per pyruvate; 2 total)

The Krebs cycle is the first step of the second stage of cellular respiration. The Krebs cycle is aerobic and takes place in the mitochondrial matrix. breaks down three-carbon molecules from glycolysis releases carbon dioxide (3 per pyruvate; 6 total)

The Krebs cycle is the first step of the second stage of cellular respiration. The Krebs cycle is aerobic and takes place in the mitochondrial matrix. breaks down three-carbon molecules from glycolysis transfers energy carriers (3 NADH and 1 FADH2 per pyruvate; 6 NADH and 2 FADH2 total)

The electron transport chain is the second step of the second stage of cellular respiration.

energy from glycolysis The electron transport chain produces a large amount of ATP. takes place in inner membrane of mitochondria Uses energy carriers transferred from krebs cycle and glycolysis oxygen used in process (3 per pyruvate; 6 total) 6H O 2 6O mitochondrion inner membrane ATP energy energy from glycolysis 4 and

energy from glycolysis The electron transport chain produces a large amount of ATP. water released as a waste product (3 per pyruvate; 6 total) ATP produced (32-34 total) 6H O 2 6O mitochondrion inner membrane ATP energy energy from glycolysis 4 and