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.
Interest rates increased slightly on May 1, and all EE savings bonds issued from May 2015 through October 2015 will earn 0.30% interest per year. The Treasury Department resets the rate for new EE savings bonds every six months. The rates have been very low for the past few years: less than 1% since November 2011, bottoming out at 0.10% for EE bonds issued from November 1, 2014, to April 30, 2015. EE savings bonds issued in May 2005 or later have a fixed interest rate for up to 30 years, based on the rate when you purchase the bond. (All EE bonds stop earning interest after 30 years.) The interest accrues monthly and is compounded twice a year. You can cash out anytime after holding the bond for a year, but youâll lose three monthsâ worth of interest if you redeem bonds before youâve owned them five years.