(b)+DNA+Structure

=** DNA **=

**1. Job:** DNA as a gene controls the production of protein while protein is resposible for the characteristics of each different cells. Different protein is needed for different cells to do each of their individual/ specific jobs.

**2. Structure:**

DNA molecule is in a shape of twisted ladder forming kind of a spiral called the **double helix**. The two outer sides of this "ladder" is made up of sugar and phosphates (Freudenrich). The "steps" between these two outter side are comprised of four chemical compounds or nucleotide molecules:

- Adenine (A) - Guanine (G) - Thymine (T) - Cytosine (C)

The nucleotide molecules have their own pairs which goes like: Adenine with Thymine & Guanine with Cytosine. These are called base pairs (Freudenrich). Refer to the diagram and videos bellow for more information.

DNA Structure1 : media type="youtube" key="qy8dk5iS1f0" height="315" width="420"

DNA Structure 2: media type="youtube" key="ZGHkHMoyC5I" height="315" width="420"

Freudenrich, Craig. "How DNA Works." //How Stuff Works//. Web. 12 Feb. 2012. .

"DNA Structure." //General Science Info//. N.p., 2011. Web. 6 Feb. 2012. [].