Module 2 Learning Activity 2_M-11_Cell as a factory (1).docx

Module 2 Learning Activity 2_M-11_Cell as a factory...

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M-11 The Cell as a Factory We often use analogies when referring to the control of a cell, saying simply that the nucleus is the “headquarters” and that the chromosomes are a “library” of information for cell activity. Such statements are helpful, but barely adequate for understanding the process. Expanding the analogy might be useful. An analogy First read this simplified description of the operation of a furniture factory: A factory assembles furniture from components (wood, fabric, etc.) that it has acquired. This factory produces several types of furniture chairs, tables, desks -- each constructed according to its function. The book of plans which describe the proper assembly of the parts is always kept in the office . A photocopy of the plan book pages (written in English ) needed for each piece of furniture is used to direct the job on the assembly line. The Factory Functionally, a cell isn’t so different from a building containing administrative areas, storage spaces, machinery for special jobs, and docks for receiving and sending shipments. Let’s presume that the business operating this factory has two objectives: variety (making various kinds of furniture) and consistency (making all its products the same high quality). The Products The products of a cell’s manufacturing are proteins, complex molecules built of smaller components. What are these smaller component molecules? Amino Acids Proteins are essential for our survival, both structurally and functionally.
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