Non-resident aliens filing a U.S. tax return and not eligible for an SSN. 1  U.S. resident aliens (based on days present in the United States) filing a U.S. tax return and not eligible for an SSN. 2  Dependent or spouse of a U.S. citizen/resident alien. 3  Dependent or spouse of a non-resident alien visa holder.
The by-products of cellular respiration are water and carbon  dioxide. The water is produced at the end of the electron transport  chain by the union of oxygen with electronâ¦s and protons (hydrogen  ions) while the carbon dioxide is a by-product of the Kreb's cycle  and pyruvate decarboxylation.
When oxygen is present, acetyl-CoA is produced from the pyruvate molecules created from glycolysis. When oxygen is present, the mitochondria will undergo aerobic respiration which leads to the Krebs cycle. However, if oxygen is not present, fermentation of the pyruvate molecule will occur.iology textbooks often state that 38 ATP molecules can be made per oxidised glucose molecule during cellular respiration (2 from glycolysis, 2 from the Krebs cycle, and about 34 from the electron transport system).