This means it functions inside the cell with a definite purpose just like an organ, such as a kidney, functions in a body. But melanocytes are regularly making brand new melanosomes. A melanosome is initially constructed of a fiber-like network foundation laid down by special protein (Pmel17) unique to melanocytes.
1 Joule = 0.239005736 Calories. Joule is metric system unit (electrical, mechanical or thermal) and defined as the amount of work done by a force of one newton to move an object one meter or a current of one ampere when passing through one ohm resistance for one second.
SI unit of work, energy and heat. One joule is the work done when a force of one newton moves its point of application one metre in the direction of the force. Symbol J. 1 erg= 10~7 J, 1 kW hr=3-6 x 106 J, 1 eV= 1-602 x 1019J, 1 calorie =4-18 J, 1 Btu=1055 J. See SI units and Appendices.