BIOL-1030 Lecture Notes - Lecture 1: Eukaryote, Chemical Substance, Carl Woese
19 Aug 2016
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Document Summary
All forms of life share common properties. New properties that arise at each step upward in the hierarchy of life. From the arrangement and interactions and component parts. New properties arise at each level of organization. Organism: an american alligator: cells basic unit of life. Are enclosed by a membrane that regulates the passage of materials between the cell and its surroundings. Evolved from prokaryotic cells (1. 8 billion years ago) Subdivided by membranes into various functional compartments or or organelles. Cells demonstrate structure and function: organisms react to their environment. One-way flow of energy: the unity of life is based on dna and common genetic code. All cells have dna, the chemical substance of genes. Are the unit of inheritance that transmit information from parents to their. Are grouped into very long dna molecules called chromosomes. A species genes are coded in the sequences of four kinds of building blocks within the.
