Coenzymes are small substances that cannot catalyze reactions themselves but they can help enzymes to catalyze reactions. They work alongside enzymes to initiate or aid the functions of enzymes hence the "Co"enzyme. Vitamin B when perform their functions like metabolism of energy by binding with enzymes, they become coenzymes. They are involved in the metabolism of every cell in the human body.
These are non-protein organic materials which binds with enzymes to catalyze a reaction. They can as well be referred to as a co factor, the reason been that the assist the activity of enzymes. Examples of coenzyme are vitamin B and S-adenosyl methionine. It is also very important to know that coenzymes cannot function alone.
