Which microscope did anton van leeuwenhoek use to observe single-celled organisms? simple microscope compound light microscope electron microscope tunneling microscope

Simple microscope

Anton van Leeuwenhoek in 1679 developed a simple microscope. He observed first living single celled organism under microscope. He observed pond water, soil-water mixture, a drop of hay infusion under microscope and found single celled living organisms like protozoa, bacteria.

Every amino acid also has another atom or group of atoms bonded to the central atom known as the R group. This R group, or side chain, gives each amino acid proteins specific characteristics, including size, polarity, and pH.

Chemicals of this type: Alanine