Class Summary - We started out class today with a quiz on page 52. Today we reviewed DNA structure. We talked about DNA containing the genetic structure for every cell in our body. We get half of our genetic information from our mom and half from our dad. DNA shape is a double helix. The 'handles' of the double helix are sugar (deoxyribose) and a phosphate group. The rungs of the double helix are the nitrogenous bases (adenine, thymine, guanine and cytosine). Adenine always pairs with Thymine and Guanine always pairs with Cytosine. A 'nucleotide' would consist of a nitrogenous base and a sugar and a phosphate. Nucleotides are held together by hydrogen bonds. The order combination of the nitrogenous bases will indicate which amino acid it is, and in turn which protein is indicated. Three nitrogenous bases is an amino acid. Proteins can range from a few amino acids to many. Then students were to start creating strands of DNA in model form.
Homework - None
Objectives - Students will create a model from of DNA using vocabulary from today's lessons.