Are baby cells smaller than adult cells?

By “baby cells” and “adult cells” I take it you mean “cells of a baby” and “cells of an adult”, and not “cells that are baby” and “cells that are adult”. Because cells can be young and be adult too. And grow older. read more

A baby has less amount of cells as compared to an adult. Just after mitosis the size of the cell becomes half the size of actual cell. But with time each cell grows like a baby and attain its full size. read more

New babies are both very like and very unlike adults. Most cell development and differentiation occur prior to a baby's birth, and baby stem cells, cells that can become different types of tissue, are essentially the same as adult stem cells. The cells and tissues of a baby are different from those of an adult, though. read more