Types of Microorganisms. 1. Bacteria. Bacteria are unicellular organisms, about few microns in size (1 micron (Âµm) = 1/1,000 of a millimetre), consisting of DNA, cytoplasm, structures needed for metabolism and reproduction, cell membrane, cell wall and capsule (Picture 1). Certain bacteria use flagella, tail-like appendages, to propel themselves.
All U.S. savings bonds have a final maturity date when they stop earning interest. Investors often lose track of this date because the U.S. Treasury Department has extended the original maturity of some bonds up to 30 years.
Series EE bonds earn interest for 30 years from date of issue. Because these bonds were first issued in 1980, all Series EE bonds are still earning interest. Series E bonds issued in November 1965 or before earn interest for 40 years from date of issue. Because some of these bonds were issued as far back as World War II, some have stopped earning interest.