Question

Transition step:

Each pyruvic acid molecule is transported to the ____________

A one carbon molecule called _____ is released from each molecule of pyruvic acid and the remaining 2-carbon unit that is formed is called ________.

CoenzymeA is then attached to _ ____ to form ____________.

Additional energy is stored as reduced ______ molecules

Answer 1

Answer: mitochondrion, carboxylic group , acetyl group, acetyl group, acetyl CoA, NADH

Step-by-step explanation:

Two pyruvate molecules remain at the end of glycolysis which still have a lot of extractable energy. The next step in storing the remaining energy in the form of ATP is oxidation by pyruvate. The transition steps are as following:

1. Pyruvate must join the mitochondrion, cross its inner membrane and arrive at the matrix before the chemical reactions can begin.
2. A group of carboxyl (one carbon molecule) is snipped off of pyruvate and released as a carbon dioxide molecule, leaving behind a two-carbon molecule called the acetyl group.
3. The oxidised two-carbon molecule, acetyl group attached to Coenzyme A to form acetyl CoA.
4. The additional energy during conversion is reduced NADH molecules and two carbon dioxide molecule.

Hence the correct order to fill the blanks is mitochondrion, carboxylic group , acetyl group, acetyl group, acetyl CoA, NADH.