Carbon dioxide is released during two phases of cellular  respiration. The first phase that carbon dioxide leaves is during  pyruvate decarboxylation. The second time CO2 is â¦  released is during the Kreb's cycle. 1 CO2 leaves during  the decarboxylation and two leave during the Kreb's cycle. Since  there are two pyruvate per glucose molecule, everything happens  twice.
Quick Answer. The JetBlue baggage policy allows for passengers to check one bag at no charge. Checked bags must be under 62 inches in total dimensions and cannot weigh over 50 pounds. As of April 2015, fees for checking bags are $50 for the second bag and $100 for a third. Continue Reading.
Delta Airlines' (DL) standard checked baggage / hold luggage policy details follow: 1  2 bags standard, up to 10 bags maximum (up to 4 bags on Delta Connection) 2  Maximum dimensions: 62 inches or 157 centimeters (length + width + height). 3  Maximum weight: 50 pounds or 23 kilograms (for Brazil: 70 pounds or 32 kilograms).