Ch04 Key Concepts and Vocabulary

Ch04 Key Concepts and Vocabulary - Chapter 4: Nucleic Acids...

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Chapter 4: Nucleic Acids and the Origin of Life OVERVIEW Chapter 4 presents the organic chemistry of nucleic acids along with chemical experiments designed to understand the possible origins of life. The chapter opens by explaining the structure of nucleotides and their assembly into RNA and, via base- pairing, the DNA double helix. After transcription and translation, Chapter 4 proceeds to the proposed early chemical evolution of life on Earth and other theories of life’s origins. Potential roles for a primitive metabolic cycle and RNA replication events in the early formation of complex molecules are presented. Chapter 4 concludes with a discussion of compartmentalization of prebiotic compounds into early lipid environments that would have enhanced catalytic and replicative chemistries. KEY CONCEPTS 1. Nucleotides are complex molecules made up of a ribose sugar, a phosphate group, and a nitrogenous base. 2. Nucleic acids are polymers made up of nucleotides. The sequence of nucleotides creates the uniqueness of each polymer. 3. Differences in the structure of the nitrogenous bases of DNA and RNA nucleotides
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This note was uploaded on 11/11/2011 for the course BIOL 101 taught by Professor Staff during the Spring '10 term at Howard.

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Ch04 Key Concepts and Vocabulary - Chapter 4: Nucleic Acids...

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