According to this. Our Church, the Church of Jesus Christ of Latter Day Saint, believes in the same organizations that the first Church of Jesus Christ have. We have the twelve apostles, just like the first Church had. The prophets, pastors, teachers, evangelists, and so on. Evangelists are bishops. We also have Deacons; unlike other Churches the Deacons start at early age of 12 years old and when they become 14, they become teachers, and at 16 they becomes priest, At 18 above they becomes Elders. Keep in mind however, that men who are newly converted into the Church becomes a Deacon first before they become teachers, priests, and Elders. A deacon is given a set of responsibility. A teacher have the same responsibility as a deacon and more. The priest have both responsibilities of teacher and deacon as well as more responsibilities. An Elder have the same responsibilities as all of them plus more.
Today, we have everything that the first Church of Jesus Christ had. We have a prophet, who is President Thomas S. Monson. We also have the twelve apostles, the presidents of the quorums of the seventy, the seventy, the presiding bishopric, and so on. I know that the Church is true and that it's restored on this Earth again by our Heavenly Father and Jesus Christ through the prophet Joseph Smith.