Plant fibers usually consist of structural carbohydrates such as cellulose in cell walls. Composed of repeating glucose units in long, single strands, cellulose cannot be digested by enzymes in the human intestine. Other plant fiber components include hemicellulose and pectin.
Mac OS is characterized by its monolithic system. From its original release through System 4, it ran only one application at a time. Even so, it was noted for its ease of use. Mac OS gained cooperative multitasking with System 5, which ran on the Macintosh SE and Macintosh II.
Find the OS X version and build number on your Mac. Every OS X update or upgrade has a version number and build number, which helps you to know whether OS X is up to date on your Mac. Check About this Mac. From the Apple ï£¿ menu, choose About This Mac. To see the build number, click the version number in About This Mac.