discuss useful and harmful activity of microorganism
Answers
usefull thing are nitrogen fixing and harmfull is they give us cold
Helpful Bacteria
Lactobacillus/Döderlein's bacillus
Characteristics: Gram-positive, rod-shaped
Presence: Lactobacilli species are present in milk and dairy products, fermented foods and also form part of our oral, intestinal and vaginal microflora. L. acidophilus, L. reuteri, L. plantarum, etc., are some of the most predominant species.
Bifidobacterium
Characteristics: Gram-positive, branched, rod-shaped
Presence: Bifidobacteria are present in the gastrointestinal tract of humans.
Escherichia
Characteristics: Gram-negative, rod-shaped
Presence: E. coli is a part of the normal microflora of small and large intestines.
Rhizobia
Characteristics: Gram-negative, rod-shaped
Presence: Rhizobia are present in soil or form a symbiotic association with the root nodules of leguminous plants.Clostridium
HARMFUL BACTERIA
tetani
Characteristics: Gram-positive, box-shaped
Presence: C. tetani spores are found in soil, skin, and the gastrointestinal tract.
Yersinia pestis
Characteristics: Gram-negative, rod-shaped
Presence: Y. pestis can only survive within the host, namely rodents (fleas) and mammals.
Helicobacter pylori
Characteristics: Gram-negative, rod-shaped
Presence: H. pylori colonizes the mucosal lining of the human stomach.