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Study_Guide_2_Answers - ZOL 320 Answers to Study Guide 2...

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ZOL 320 Answers to Study Guide 2 Cells and Development 1. Cell communication is involved in signaling between such as when a polypeptide growth factor is sent by one type of cell and to another cell which has receptor for that protein. Cell growth might be the result of the signal so that the cell responds to the signal by assembling the mitotic spindle and going through mitosis. In cell differentiation the cell responds by using transcription factors to turn on or turn off different sets of its genes. After expression of that set of genes the cell will be able to differentiate. In morphogenesis cells change shape, move, rearrange to form new shapes by using parts of the cytoskeleton such as microtubules and microfilaments. 2. Self-assembly is the concept that the molecules themselves have enough information in their structure so that they can form a more complex structure from the subunits. Membranes for instance can form from phospholipids in an aqueous solution. Microtubules also can form from the two tubulin proteins so at the subcellular level it is clear that self-assembly is important. At the level of groups of cells and the construction of the whole embryo it is less clear but certainly possible. 3.
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This note was uploaded on 11/15/2011 for the course ZOL 320 taught by Professor Kopachik,w during the Fall '08 term at Michigan State University.

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Study_Guide_2_Answers - ZOL 320 Answers to Study Guide 2...

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