AP BIOLOGY

Detailed explanation-1: -By the oxidation of two pyruvate molecules we obtain 2NADH+ and 2 acetyl Co-A molecules. So we are going to pass twice through the Krebs cycle, obtaining 6NADH+ and 2FADH2, and requiring 4 water molecules.

Detailed explanation-2: -How many water molecules are produced in Krebs cycle? There is an involvement of one molecule of water while in the making of citrate and the other is made while making of malate from fumarate. There is a total of 44 water molecules that is made from which there are 34 made from the synthesis of ATP.

Detailed explanation-3: -Answer and Explanation: Water is formed in the final stage of cellular respiration, known as the electron transport chain. NADH and FADH pass the electrons they carry as hydrogen atoms onto the electron transport chain in mitochondria.

Detailed explanation-4: -Results of the Krebs Cycle After the second turn through the Krebs cycle, the original glucose molecule has been broken down completely. All six of its carbon atoms have combined with oxygen to form carbon dioxide.

Detailed explanation-5: -Step 6 of the Krebs cycle: Succinate Dehydrogenase In the sixth step, succinate is converted to fumarate; here, a dehydrogenation takes place because two protons are removed. FAD serves as coenzyme wich is bound covalently to the enzyme succinate dehydrogenase, so that usually the notation E-FAD is used.