Question

Desta is studying for an entrance exam for a nurse's training program at a local hospital. She learns the components of a DNA molecule. What are these components?

Answer 1

1. A phosphate group. These give the molecule a negative charge.

2. A nitrogen base. There are four different nitrogen bases though, so be careful. The four different nitrogen bases are Adenine, Guanine, Cytosine, and Thymine.