Bacteria are a: Prokaryotic microorganism Single-celled Microscopic organisms Lack nuclei and other organized cell structure Several species are pathogenic (capable of causing disease) Most are non-infectious Have a role in decay, fermentation, nutrient recycling, and nitrogen fixation. Bacteria are usually classified as gram-positive or gram-negative based on a basic microbiological staining procedure called the gram …

Bacteria Read More »

Prokaryotic cells

Prokaryotic cells are found in bacteria, archaea and cynobacteria (blue-green algae). The cellular organization of prokaryotic cells is primitive as they lack a membrane-bound nucleus and other membrane-bound cell organelles. Cell morphologies commonly found in prokaryotic cells are Coccus (pl. cocci) or round, Bacillus (plural : bacilli) or rod, Spirillum (plural spirilla) or spiral, Spirochete …

Prokaryotic cells Read More »