11 Biology - Respiration / Diffusion

Phase 1: Glycolysis. Where and what happens?

Occurs in the cytoplasm of the cell, producing 2 ATP as well as breaking glucose down into two pyruvates

Phase 2: Krebs Cycle. Where and what happens

Occurs in the mitochondria, producing ATP, NADH, and FADH2 as well as breaking down the two pyruvates formed fully to produce some energy

Phase 3: The Electron Transport Chain

Contains the transport NADH and FADH2 which carry 2 protons and an electron to transport energy to remake ATP

Aerobic Respiration

Produces 36 ATP while requiring sufficient amounts of oxygen to fully break down glucose molecules

Anaerobic Respiration

Occurs in the cytoplasm, producing 2 ATP as well as lactic acid as a biproduct due to the fact that glucose is not fully broken down due to the lack of oxygen