Anerobic respiration
Anaerobic respiration produces approximately 2 ATP per molecule of glucose. It actually produced four ATP molecules, but two are needed during the respiration process, giving a net of two ATP molecules.
In glycolysis, one glucose molecule produces a net yield of two ATP molecules at the end of the process.
In anaerobic respiration one glucose molecule produces a net gain of two ATP molecules (four ATP molecules are produced during glycolysis but two are required by enzymes used during the process). In aerobic respiration a molecule of glucose is much more profitable in that a net worth of 34 ATP molecules are generated (32 gross with two being required in the process).
One glucose molecule is converted to two pyruvate molecules during glycolysis.
The chemiosmosis process through oxidative phosphorylation can generate up to 34 ATP molecules from one glucose molecule. The Krebs cycle, on the other hand, produces 2 ATP molecules per glucose molecule.
Water (H2O) molecules, one on either side of the molecule.
To energize glucose molecules at the start of a process, ATP (adenosine triphosphate) is invested. This ATP is used to phosphorylate the glucose molecule, providing the initial energy needed to start the process of glycolysis or aerobic respiration.
During glycolysis, the overall gain of ATP per glucose molecule is 2. While glycolysis produces 4 ATPs, it uses 2 ATPs in the process.
The hydrolysis of glycogen produces glucose molecules, which can then be used as a source of energy for the body. Glycogen is a storage form of glucose in animals and is broken down into glucose through the process of hydrolysis when energy is needed.
Alcoholic fermentation produces 2 ATP molecules per glucose molecule. This process involves the conversion of glucose into ethanol and carbon dioxide by yeast or some other microorganisms in the absence of oxygen.
The metabolism of one molecule of glucose into two molecules of pyruvic acid through a process called glycosysis produces 2 ATP molecules
Substrate-level phosphorylation occurs when a molecule donates a phosphate group to ADP to form ATP. This process generates 4 ATP molecules per glucose molecule during glycolysis, but it requires an initial input of 2 ATP molecules for activation.