Multiple choice Which of the following is part of the structure of Coenzyme A? Niacin Riboflavin Pantothenic acid Biotin Reveal answer Fill a bubble to check yourself C Correct answer Explanation Pantothenic acid is an essential component of Coenzyme A (CoA), which is critical for the metabolism of carbohydrates, proteins, and lipids. CoA plays a central role in the citric acid cycle and fatty acid synthesis.