The Role of Bacteria For Human

The Role of Bacteria For Human

When we were in our mothers uterus, our body was free from bacteria. But when we were born our body began to make contact with outside world and since that time bacteria entered and became occupants inside our body. Bacteria which enter our body are either beneficial or harmful.

1. Bacteria That are Beneficial for Humans

Several kinds of bacteria can benefit human. For example, there is a bacterium that can fertilize soil by bonding free nitrogen on air and form it into nitrate that is required by plants. There is also bacterium that can decompose dead organisms. Even we also often eat food processed or made by using the help of bacteria. Can you mention the examples?

The example of beneficial bacteria and substance they produce or their use are as follows.

a. Streptomyces aureofaciens, produce aureomycin (substance that can destroy bacteria or virus).

b. Streptomyces venezuellae, produce chloromystin and chloramphenicol.

c. Rhizobium leguminosorum; found in nodules of beans root, can bond free nitrogen on air so it can fertilize soil.

d. Azotobacter chroococcum bacteria that can bond nitrogen.

e. Escherichia coli; live in colon, help in making vitamin K in the body.

f. Lactobacillus casei; can be used in cheese making.

g. Lactobacillus bulgaricus; used in yogurt making.

h. Nitrobacter sp.; can change nitrite that is poisonous in plant into nitrate that is required by the root of the plant.

2. Bacteria That are Harmful for Humans

Bacteria that are harmful for humans are in general parasitic and cause disease. Several examples of bacteria that cause disease are as follows.

a. Neisseria gonorrhoeae; the cause of gonorhea disease (pusurination).

b. Neisseria gonorrhoeae; the case of brain membrane inflamation.

c. Clostridium tetan; the cause of tetanus disease.

d. Bacillus antraxis; the cause of anthrax disease.

e. Vibrio cholerae; the cause of cholera disease.

f. Salmonella typhosa; the cause of typhoid disease.

g. Pasteurella pestis; the cause of pes disease

h. Treponema pallidum; the cause of syphilis disease.