Examples of Bacteria
The bacterial world is full of fascinating organisms, some are harmful, and others are benign and even beneficial. Here are just a few examples:
Flesh eating bacteria - they don't actually eat flesh, but the toxins they release dissolve skin and the fascia connective tissue that covers muscles. The condition is known as necrotizing fasciitis and it is rare. Several types of bacteria can cause the disease, but the most common flesh eating bugs belong to group A streptococcal bacteria, particularlyStreptococcus pyogenes.
Bacterial toxins - toxins released by other types of bacteria can also be extremely harmful, and cause illnesses such as diphtheria, botulism, and tetanus. Diphtheria is caused by Corynebacterium diphtheriae, botulism is caused by Clostridium botulinum, and tetanus is caused by Clostridium tetani.
Friendly bacteria - then there are the friendly types that live on and inside you, but don't cause you any harm. In fact they are very beneficial and good to have around. Bifidobacterium longum lives in the human digestive tract and helps to keep the entire digestive process functioning smoothly. Lactobacillus salivarus makes a nice home inside your mouth, and produces lactic acid which can prevent the growth of pathogenic bacteria.
Ice-minus bacteria - these coolly named microbes are mutant strains of the common wild-type bacteria Pseudomonas syringae. They are sprayed on crops to prevent frost from forming.
E.coli and E. coli DNA - this is probably the most studied organism in biology. It's found in the lower intestines of mammals and has helped in many areas of scientific research including the development of DNA sequencing technology. Only a small handful of E.coli strains are harmful