How are a unit cell and a crystal lattice related/?

Read your textbook and do your homework yourself. There's a reason for homework. You won't learn a damned thing if someone else does it for you. Don't you want to be the one who, when called on in cl, can stand up and answer anything the teacher asks proudly and with confidence? When you do the research and reading yourself, you retain information. When it's handed to you, you won't remember any of it.