What is the structure of DNA?
Modeling, comparing, analyzing
To construct a model of DNA
Student will construct model of the double helix using construction paper
DNA is a molecule that makes up the genes. It looks like a twisting ladder with chains of sugar groups and phosphates connected by pairs of nitrogen bases. Four chemicals make up the chemical contained in each cell they are ADENINE, THYMINE, CYTOSINE, and GUANINE. The letters A, T, C, and G stand for these bases.
Construction paper in white, black, green, red, blue, and yellow
1. Trace and cut out 12 white sugar molecules and 21 black phosphate molecules. Label each molecules.
4. Trace and cut out 12 nitrogen bases: 3 green A’s, 3 red T’s, 3 yellow C’s, and 3 blue g’s. Label each bases.
5. Construct the two sides of the DNA molecule with the sugars and phosphates.
6. Complete the molecule of DNA by fitting base pairs along the sides of the molecule.
7. Tape the DNA molecule together.