Earth Sciences 1086F/G Chapter Notes - Chapter 19: Murchison Meteorite, Harold Urey, Stanley Miller
13 Aug 2016
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Life or life-form - living matter utilizes energy from its environment to survive and create offspring, can reproduce, and carry out processes by which they can grow and live. Yes - they reproduce and they metabolize (thus grow and maintain themselves). Not a life-form - no virus can live without host cells: all organisms that have the essential characteristics of life are composed of discrete units called cells. Within these cells, the ability of life to reproduce and self-regulate is based on the interaction between compounds known as nucleic acids and proteins. Nucleic acids are composed of: (bonded together in complex patterns: sugar, a phosphate group and, a nitrogen compound, The primary role of dna is to contribute the information required for production to regulate chemical reactions in cells. Another form of nucleic acid, known as rna (ribonucleic acid) carries out the coded instructions given by dna. Dna code that was passed off to you as his offspring.
