Vitamin amino acids. Most vitamins are not single molecules, but groups of related molecules called vitamers. For example, vitamin E consists of four tocopherols and four tocotrienols. The thirteen vitamins required by human metabolism are: vitamin A (retinols and carotenoids), vitamin B (thiamine), vitamin B (riboflavin), vitamin B (niacin), vitamin B (pantothenic acid), vitamin B (pyridoxine), vitamin B (biotin), vitamin B (folic acid or folate), vitamin B (cobalamins), vitamin C (ascorbic acid), vitamin D (calciferols), vitamin E (tocopherols and tocotrienols), and vitamin K (quinones). Vitamins have diverse biochemical functions. Some forms of vitamin A function as regulators of cell and tissue
Kawasaki GPZ1100 B1/B2 the B2/A (DFI) model had the more common Throttle Body Injection (TBI) where the injectors are mounted into the throttle bodies. With different throttle bodies comes a very slight difference in the air box mounting. The intake rubbers on the B1 are smaller than the B2 but a throttle body swap is possible by simply replacing the inlet rubbers. The fuel level sender units are physically different between the two models, this could be due to the different methods used to report the fuel level (B1–gauge, B2–LCD). The B1 model has a fuel sender with a round tank mounting, the