Question
Identify the stage of cellular respiration in which each of the following takes place. checkmark Produces 32 ATP molecules checkmark Creates four ATP molecules, but then gains overall only two checkmark Gives off carbon dioxide checkmark Gives off water checkmark Produces two ATP molecules
Answer
4.5
(173 Votes)
Ezekiel
Master · Tutor for 5 years
Answer
1. Electron transport chain2. Citric acid cycle3. Citric acid cycle4. Electron transport chain
Explanation
This question asks to identify the stage of cellular respiration associated with each description. Let's go through each statement one by one:1. "Produces 32 ATP molecules": This is typically associated with the electron transport chain (ETC) and oxidative phosphorylation, which occur after glycolysis and the citric acid cycle. It is in the ETC that the majority of ATP is produced, often quoted as approximately 32 or 34 ATP molecules, depending on the efficiency of the process and the cell type.2. "Creates four ATP molecules, but then gains overall only two": This statement describes the citric acid cycle, also known as the Krebs cycle. During this cycle, four ATP molecules are produced per glucose molecule, but two ATP molecules are used during the conversion of pyruvate to acetyl-CoA (which enters the citric acid cycle), resulting in a net gain of two ATP molecules.3. "Gives off carbon dioxide": Carbon dioxide is released during the citric acid cycle when acetyl-CoA combines with oxaloacetate to form citrate, which is then metabolized, releasing CO2 in the process.4. "Gives off water": Water is produced during the electron transport chain when electrons are transferred through a series of proteins and finally combine with oxygen (the final electron acceptor) and protons to form water.