Step 1: GlycolysisStep 2: Krebs CycleStep 3: Electron Transport Chain
Glycolysis
2 ATP
1 Glucose
4 (2) ATP
Cellular respiration is the process by which eukaryotic cells break down glucose to make ATP. In short, the process starts with oxygen and glucose to produce carbon dioxide, water, and energy (ATP & heat).
Krebs Cycle
There are three steps of cellular respiration: the first step is glycolysis, the second is the Krebs cycle, and the third is the Electron Transport Chain.
Electron Transport Chain
Glycolysis, which takes place in the cell’s cytoplasm, is an anaerobic process. It requires no oxygen to produce its ATP. It uses 2 ATP to break down 1 glucose into 2 pyruvates, 2 NADH, and 4 ATP (2 ATP as net profit).
Overall Equation
1 Glucose
6 CO2
The Krebs cycle, which takes place in the mitochondria's matrix, is an aerobic process. It needs oxygen to produce its ATP. It uses 2 Acetyl-CoA, which was converted from the 2 pyruvates from glycolysis, to make 8 NADH, 2 FADH2, 6 CO2, and 2 ATPs.
6 CO2
2 ATP
The Electron Transport Chain, which takes place in the inner membrane of the mitochondria, is also an aerobic process. It uses 10 NADH, 2 FADH2, and 6 O2 to produce 6 H2O and 34 ATPs.