Here's a breakdown:

* DNA: This is the genetic material that contains the instructions for building and maintaining an organism. It's a long, complex molecule that is tightly wound and organized.

* Proteins: These help to package and organize the DNA. They bind to the DNA and help it fold into a compact structure called a chromatin. This chromatin is further condensed to form the visible chromosome.

Think of it this way:

* DNA: Like a very long piece of thread.

* Proteins: Like the spools that help you wind up the thread.

* Chromatin: The wound up thread on the spool.

* Chromosome: The highly compact spool that holds the thread.

During cell division, the chromosomes become even more condensed, making them visible under a microscope. This is important for ensuring that each daughter cell receives a complete set of genetic information.