Article Summary: Some bacteria have an additional layer outside of the cell wall called the glycocalyx. This coating of macromolecules protects the cell and helps it adhere to surfaces. You have free access to a large collection of materials used in a college-level introductory Cell Biology Course.
This article is about the United States Army post. For other uses, see Fort Knox (disambiguation) . Fort Knox is a United States Army post in Kentucky south of Louisville and north of Elizabethtown. The 109,000 acre (170 sq mi, 441 kmÂ²) base covers parts of Bullitt, Hardin, and Meade counties.
Fort Knox also houses rare coins and items of historical significance. For example, the Declaration of Independence is moved there during times of war. Between Fort Knox and the U.S. Federal Reserve in Manhattan, the US holds 2.5% of all of the gold ever refined, and owns more gold than any other nation. If all of the gold in Fort Knox was melted down into a cube, the cube would 20.3 feet on each side! Joseph Gibson is a freelance writer currently based in Austin, TX.