1 Membranes separate their contents from the environment. 2  Cell membranes separate the cell contents from its environment, and organelle membranes separate the organelle contents from their environment. 3  Membranes regulate the movement of materials through them.
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AMGen (formerly Applied Molecular Genetics) is an American multinational biopharmaceutical company headquartered in Thousand Oaks, California. Located in the Conejo Valley, AMGen is the world's largest independent biotechnology firm.he word AMGen is a portmanteau of the company's original name, A pplied M olecular Gen etics, which became the official name of the company in 1983 (three years after incorporation and coincident with its initial public offering).