UEN Security Office
Technical Services Support Center (TSSC)
Eccles Broadcast Center
101 Wasatch Drive
Salt Lake City, UT 84112
(801) 585-6105 (fax)
Main Curriculum Tie:
Background For Teachers:
DNA is found in the nucleus of every cell of our body and every cell of any living thing. We have a lot of DNA. The basic structure of DNA is the same in every living organism it just differs in the order of its code.
DNA provides the instruction or blueprint for building and operating all living things. The DNA instructions are divided into segments called genes. Each gene provides the information for making a protein that carries out a specific function in the cell. These genes are found in chromosomes inside the cell's nucleus. Chromosomes are what get copied and passed on from generation to generation.
The DNA molecule consists of two strands that form a double helix, a spiraling shape much like a twisted ladder. The DNA molecule has a sugar part, a phosphate part and four different chemical bases - adenine (A), thymine (T), cytosine (C) and guanine (G). The backbone is formed by a chain of alternating phosphates and sugars. The sugar molecule in the backbone provides an attachment site for one of the chemical bases. The four chemical bases are the DNA's alphabet for forming codes that instruct a cell to make different proteins. The differences in these combinations result in the differences among all living organisms. In this DNA alphabet two bases link together at a time. Adenine always combines with thymine and cytosine always combines with guanine.
Intended Learning Outcomes:
Instructional procedure: The DNA extraction and the DNA model building can be done simultaneously. Start the extraction first and then when the mixture needs to sit the students can begin working on the model.
Created Date :