Lesson 8 Nucleic Acids.

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Presentation transcript:

Lesson 8 Nucleic Acids

Objectives Lesson 8 Identify the components of a nucleotide. Compare the sugars: ribose and deoxyribose. Identify the five nitrogen bases. Compare the structure and function of deoxyribonucleic acid (DNA), ribonucleic acid (RNA), and adenosine triphosphate (ATP) molecules.

Nucleic Acid Structure Monomer - Nucleotide Nucleotide parts: Nitrogen base Sugar Phosphate group Nucleoside: Nitrogen base and Sugar Adenosine: Adenine + Ribose

Nitrogen Bases Nitrogen bases: Bases in DNA: A, T, C, and G Bases in RNA: A, U, C, and G Base in ATP: A

Purines 2 ringed structure Adenine and Guanine Pyrimidines 1 ring structure Thymine, Uracil, and Cytosine

Phosphate groups in Nucleic Acids DNA and RNA: 1 phosphate group/nucleotide ATP: 3 phosphate (Adenosine Triphosphate)

Sugars Sugars in nucleic acids: Ribose for Ribonucleic Acid and Adenosine Triphosphate (RNA and ATP) 5 carbon (pentose) sugar Deoxyribose in Deoxyribonucleic acid (DNA) 5 carbon sugar (lacking an oxygen, but otherwise exactly the same as ribose)

Function of Nucleic Acids DNA - contains the "blueprint for life" RNA - transfers that information to the organelles of the cell to make proteins ATP - provides the "energy for life" - it is "spendable" energy - just the right amount for cellular functions