RESPOND TO THIS DISCUSSION POST THOUGHTFULLY The Question: How do prokaryotic cells exhibit cellular differentiation? Describe one manner of differentiation and the purpose of such differentiation.

The Person's Prokaryotic cells can differential in a few ways, but one of them is simply cell shape. Round cells are considered "cocci," yet they may be slightly flattened when they are together in a line. "Bacilli" are rod shaped, and "spirilla" can be corkscrewed or slightly curved. Spirochetes are a kind of spirilla with a helix shape, and vibrio simply have a slight curve. The differences in physical features give the prokaryotes different properties. A rod shaped bacteria, for example, gives the cell a greater surface area with which to uptake more necessary nutrients.

Everything in your body is made up of cells: your hair, fingernails, bones, muscles, organs and even blood. All of these cells contain the same genetic material, or DNA, and this genetic material is what makes you a unique individual - it's different from everyone else's DNA. So, how is it possible that your cells contain the same information, yet look and act so differently from each other?

Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression. Gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a cell functions. Gene expression occurs because of certain signals in your body, both inside and outside of your cells.

Explanation:

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what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

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