Answer: Water soluble Fat soluble Both Vitamin B6 (pyridoxine). Found in aqueous environment inside cell. Vitamind D. Stored in body fat. May function as coenzyme precursors. Most are not synthesized in the human body. Deficiency can cause disease. Water soluble Fat soluble Both Vitamin B6 (pyridoxine). Found in aqueous environment inside cell. Vitamind D. Stored in body fat. May function as coenzyme precursors. Most are not synthesized in the human body. Deficiency can cause disease. Solution Answer: Water soluble Fat soluble Both Vitamin B6 (pyridoxine). Found in aqueous environment inside cell. Vitamind D. Stored in body fat. May function as coenzyme precursors. Most are not synthesized in the human body. Deficiency can cause disease. Water soluble Fat soluble Both Vitamin B6 (pyridoxine). Found in aqueous environment inside cell. Vitamind D. Stored in body fat. May function as coenzyme precursors. Most are not synthesized in the human body. Deficiency can cause disease..