Cell Wall

The main structural component of most prokaryotes is the rigid cell wall (see Figure 8.3). Functions of the cell wall include: (1) providing protection for the delicate protoplast from osmotic lysis (bursting), (2) determining a cell's shape, (3) acting as a permeability layer that excludes large molecules and various antibiotics and plays an active role in regulating the cell's intake of ions, and (4) providing a solid support for flagella. Cell walls of various species may differ greatly in structure, thickness, and composition. The cell wall accounts for about 20 to 40% of the dry weight of a bacterium.

Guide to Alternative Fuels

Guide to Alternative Fuels

Your Alternative Fuel Solution for Saving Money, Reducing Oil Dependency, and Helping the Planet. Ethanol is an alternative to gasoline. The use of ethanol has been demonstrated to reduce greenhouse emissions slightly as compared to gasoline. Through this ebook, you are going to learn what you will need to know why choosing an alternative fuel may benefit you and your future.

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