Biology 1201A Lecture Notes - Lecture 2: Allan Hills 84001, Mitochondrion, Nuclear Membrane
12 Jan 2016
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Document Summary
Universe formed 15 billion years ago (big bang) The frog is alive, the rock is not. The types of elements found in the frog and rock are the same. Both obey the same fundamental laws of physics and chemistry. All life is composed of one or more cells. The fundamental (smallest) unit of all life. Arise from the growth and division of other cells. Life is easy to recognize but difficult to define. Sweating is one way in which the body attempts to remove heat and thereby maintain a constant temperature: growth and development all organisms increase their size by increasing the size and or number of cells. Many organisms also change over time: evolve populations of living organisms change over the course of generations to become better adapted to their environment. The virus is unable to replicate by itself, so therefore is not alive. A termite cathedral emerges from the simple work of thousands of individual termites.
