The queen is the biggest, and the workers are the smallest. Each egg hatches, and a little worm-like larva crawls out. The worker bees feed pollen and honey to the baby larva. Soon, it spins a little web blanket inside the cell and becomes a pupa. After 16 to 24 days, a full grown bee climbs out of the cell.
Worker bees do different things depending on how old they are.
They take care of the babies, make wax, build the honeycomb, clean up the hive, store pollen, make honey, guard the hive, and collect pollen or nectar. If she's born in the fall when there's less work to do, she may survive the winter. Queens can live for several years. Babies are fed lots of pollen, because they need the protein to grow. Nectar is what the a worker bee uses to make honey.