Answer:
Acetyl group
Explanation:
The coenzyme A is involved in various metabolic reactions; it carries acetyl group in the form of acetyl CoA into the TCA cycle which is further oxidized to produce water, carbon dioxide and energy in the form of Adenosine triphosphate (ATP) and guanosine triphosphate (GTP).
Acetyl CoA is derived from the oxidation of fats, proteins and carbohydrates.