The Krebs Cycle Quiz

The acetyl CoA molecules undergo further breakdown and oxidation in the Krebs cycle, resulting in the production of energy-rich molecules such as NADH and FADH2, as well as carbon dioxide.

The initial reaction of acetyl CoA in the Krebs cycle is its combination with a four-carbon molecule called oxaloacetate to form a six-carbon molecule called citric acid.

Another name for the Krebs cycle is the citric acid cycle, named after the formation of citric acid in the initial reaction of acetyl CoA with oxaloacetate.

<p>The products of the oxidation reaction of citric acid in the Krebs cycle are NADH and carbon dioxide.</p> Signup and view all the answers

<p>The four-carbon molecule undergoes further oxidation, producing NADH, FADH2, and ATP, before being transformed back into oxaloacetate to complete the cycle.</p> Signup and view all the answers

<p>The energy released by the oxidation reaction is used to join ADP and phosphate to form ATP, which serves as a source of energy for the cell.</p> Signup and view all the answers

<p>The electron carriers produced in the Krebs cycle are NADH and FADH2, which carry electrons to the electron transport chain for further energy production.</p> Signup and view all the answers

<p>The Krebs cycle is considered a cycle because it begins and ends with the same molecule, oxaloacetate, forming a continuous circular pathway.</p> Signup and view all the answers

<p>Useful molecules produced in the Krebs cycle include NADH, FADH2, ATP, and carbon dioxide, which are essential for energy production and cellular respiration.</p> Signup and view all the answers

<p>After completing the Krebs cycle, the acetyl-CoA molecules are completely oxidized and broken down to carbon dioxide, which will be exhaled, and the energy-rich molecules produced will carry electrons to the electron transport chain for further energy production.</p> Signup and view all the answers