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.
Tomâs response. It depends on what you mean by maturity. Final maturity â when they stop earning interest â is 30 years after the issue date for all Series EE and I Savings Bonds, as well as for all Series E bonds that are still earning interest. For Series HH and H Savings Bonds, final maturity comes after 20 years. Series EE bonds also have an original maturity date â when they will be worth at least double your original investment. Series I, H, and HH bonds are all sold at face value and donât have this feature.