
Cytoplasm
All of the substance of a cell outside of the nucleus of a membrane bound cell. The cytoplasm contains a number of different types organelles such as the mitochondria and it also includes fluid (the cytosol). The cytoplasm is clear in color and has a gel-like appearance. It is composed mainly of water and also contains enzymes, salts, organelles, and various organic molecules. The cytoplasm helps to move materials around the cell and also dissolves cellular waste. ( biology.about.com) Most, but not all, cells have cytoplasm. Mature sperm are essentially devoid of cytoplasm. The word "cytoplasm" was compounded from two Greek roots -- "kytos," a hollow vessel + "plasma," plasm. From "kytos" came the prefix "cyto-," cell. Cytoplasm is literally cell plasm. (medterms.com).
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