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Nature_and_Environment.123

Bacteria - the essential form of life

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{Nature_and_Environment.123.2}: Jay Hoffman {resist} Mon, 16 Dec 2019 21:11:11 CST (85 lines)

“But as long as humans can’t live without carbon, nitrogen, protection
from disease and the ability to fully digest their food, they can’t
live without bacteria,”— Anne Maczulak, famous microbiologist.

Bacteria – a word that often brings out a sense of uneasiness in most
of us are, in fact, one of the earliest forms of life. It can be quite
unnerving to know that there are bacteria all over your skin, hair,
and even inside the body. But only a few species of bacteria are
dangerous. The majority of bacteria are good, and without them, life
on earth wouldn’t be possible.

Bacteria and our Environment

Efficient Recyclers: Bacteria play a critical role in the
decomposition of organic matter in soil and in the oceans. It also
cycles chemical elements such as carbon and nitrogen, which are
essential for humans to survive.

Creator of Amino & Nucleic Acids: Soil bacteria cyanobacteria play a
crucial role in turning atmospheric nitrogen into ammonium or nitrates
that plants can absorb to create amino acids and nucleic acids, the
building blocks of DNA. We just eat the plants and get all the
benefits.

Nutrient Builders: Bacteria constantly helps maintain the cycle of our
nature. The major constituent of soil is bacteria. They play a very
crucial role in building nutrients, i.e. recycling carbon, nitrogen,
sulphur and phosphorus between human beings and the environment.
Without these cycles, there would be no exchange of elements, which
are the backbone of proteins, sugars, and fats.

Water Recyclers: Recently, scientists have found evidence that
bacteria represent many particles that cause clouds to precipitate
into falling snow and rain.

Harvesting Agents: Nitrogen-fixing bacteria like Azotobacter,
Clostridium, etc. fix free nitrogen of the soil and make it available
to the plants, which is a necessity for the survival of the plants.
And this is how bacteria help us in harvesting vegetation.

Pollution fighters: Heavy metals from industry and toxic synthetic
organic chemicals, pose serious environmental and health risks.
Bioremediation uses certain bacteria that digest toxic substances and
convert them into less harmful substances. Also, the traditional
chemical analyses for determining and locating toxic waste are
expensive and inaccurate. Therefore, scientists have designed
biosensors, which are genetically modified bacteria that can locate
pollutants.

Humans and Bacteria

The number of bacterial cells in the body is commonly estimated at 10
times the number of human cells. Yes, bacteria, such as those from the
genera Bifidobacterium and Lactobacillus, account for a large majority
of the 100 trillion creepy crawlies that call your body home.

*•*Aids our Digestive System: Bacteria offer multiple
benefits inside the human body. In the digestive system, they help
break down food like plant and fibres that we can’t digest on our own.
Lactobacillus helps break down the sugar.
*•
*•*Maximum Nutrition from food: According to Anne
Maczulak, bacteria in the digestive system supply us with the needed
vitamins like biotin and Vitamin K, and are our primary source for
some of these nutrients. In a nutshell, we get more nutrition from
food because of bacteria.
*•
*•*Keeps the harmful bacteria out: Many bacteria that
live inside the mouth, throat, nose and intestines do not let other
harmful microorganisms live inside or on the human body. The bacteria
in the intestines work with the immune system to protect the body
against various diseases. The bacteria residing inside the stomach
helps maintain the ph and acidity level in the stomach.
*•
*•*Safeguards our skin: The forest of bacteria on our
skin (almost 200 different species on a normal person) controls the
environment of the skin and its resources, keeping other harmful
bacteria from establishing a foothold.
*•
*•*Fortifies our Immune System: Exposure to bacteria
proved to be an important part of the development of our immune
system. Bacteria are known to prime the immune system to fight the
harmful viruses later in life. Children who are sheltered from
bacteria are prone to develop asthma and allergies.
https://www.toppr.com/bytes/humans-and-bacteria/

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