The b-vitamin is part of two coenzymes that break down glucose

The b-vitamin 1 (or thiamine) is part of 2 coenzymes that help break down glucose

Explanation:

Thiamine, also known as vitamin B1, is a water-soluble vitamin belonging to the B complex. The main function of thiamine is its action on carbohydrate (glucose), fat and protein metabolism, acting as a coenzyme - thiamine diphosphate.  This coenzyme in combination with phosphorus, forms coenzyme thiamine pyrophosphate (TPP), which is the key to various reactions such as the transformation of glucose into energy (ATP). TPP acts as a coenzyme in the oxidative decarboxylation of pyruvate, forming acetate and acetyl coenzyme A, a major component of the Krebs pathway, and is required for carbohydrate, fat and protein metabolism