Question

How many single C-O bonds does a citric acid molecule contain?​

Answer 1

Answer:

KEY TAKEAWAYS

Key Points

In the conversion of pyruvate to acetyl CoA, each pyruvate molecule loses one carbon atom with the release of carbon dioxide.

During the breakdown of pyruvate, electrons are transferred to NAD+ to produce NADH, which will be used by the cell to produce ATP.

In the final step of the breakdown of pyruvate, an acetyl group is transferred to Coenzyme A to produce acetyl CoA.

Key Terms

acetyl CoA: a molecule that conveys the carbon atoms from glycolysis (pyruvate) to the citric acid cycle to be oxidized for energy production

Answer 2

Answer:

A citric acid molecule contains 20 single bonds.

Explanation:

The chemical structure of a molecule involves the arrangement of atoms and the chemical bonds that hold the atoms together. A citric acid molecule contains a total of 20 bonds. There are 12 non-H bonds, 3 multiple bonds, 5 rotatable bonds, 3 double bonds, 3 carboxylic acids. ) (aliphatic), 4 hydroxyl groups and 1 tertiary alcohol. The representation of the 2D chemical structure of citric acid is also called the skeletal formula, which is the standard symbol for organic molecules. The carbon atoms in the chemical structure of citric acid are in the corner(s), and the hydrogen atoms bonded to the carbon atoms are not shown—each carbon atom is bonded to enough hydrogen atoms to form four bonds to the carbon atom.

The picture of the 3D chemical structure of citric acid is based on a ball-and-stick model that shows the three-dimensional location of the atoms as well as the bonds between them. The radius of the spheres is therefore smaller than the length of the rods to give a clearer view of the atoms and bonds in the general model of the chemical structure of citric acid.

Pyruvic acid is a 3-carbon compound produced by the breakdown of glucose during glycolysis. Glucose is a 6-carbon compound with the molecular formula C6H12O6, and the breakdown of one glucose molecule produces 2 molecules of pyruvic acid (C3H4O3), which is a 3-carbon compound.

Pyruvic acid formed in the cytoplasm enters the mitochondrial matrix, where it forms the 2-carbon compound of acetyl coenzyme A. It reacts in the presence of water with oxaloacetate (C4H4O5), a 4-carbon compound, to form 6-carbon citrate (C6H8O7) and release coenzyme A.

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