Objective In this lesson, you will The Nucleus of a Cell The nucleus is called the of the cell because it holds the instructions to a body needs. These instructions are in the form of DNA. make all the

The Structure of DNA Inside the nucleus, the DNA is packaged into threadlike structures called .DNA supplies. . responsible for different and for proper functioning of the body The DNA molecule is a. a double-stranded structure that looks like a spiral ladder. The sides of the ladder are made of. and. The rungs of the Biology A ladder are.