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Biotechnology

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Lecture notes of 12 pages for the course Science at Science (Biotechnology)

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Biotechnology


Introduction of Biotechnology
Biotechnology is a branch of science that combines biology and technology to
develop useful products and processes for the benefit of humans. It involves the use of
living organisms, cells, or biological systems to produce medicines, improve crops, and
solve environmental problems. Biotechnology plays an important role in agriculture,
medicine, industry, and environmental management.

History of biotechnology
1.​ In the 17th century, the invention of the microscope helped scientists observe
microorganisms. This discovery later contributed to the development of modern
biotechnology.​

2.​ In the 19th century, Louis Pasteur explained the role of microorganisms in
fermentation and proved that microbes are responsible for many biological
processes. This discovery laid the foundation of microbiology and biotechnology.​

3.​ In 1865, Gregor Mendel introduced the laws of inheritance through his
experiments on pea plants, which became the basis of modern genetics and
biotechnology.​

4.​ In 1919, the term “biotechnology” was first used by Karl Ereky to describe the
use of living organisms to produce useful products on an industrial scale.​

5.​ In 1953, James Watson and Francis Crick discovered the double-helix structure
of DNA, which opened new possibilities for genetic engineering.​

6.​ In the 1970s, scientists developed recombinant DNA technology, allowing genes
from one organism to be inserted into another organism. This marked the
beginning of modern biotechnology.​

7.​ In 1982, the first genetically engineered medicine, human insulin, was produced
using bacteria for the treatment of diabetes.​

8.​ In the 21st century, biotechnology has advanced rapidly with developments in
genetic engineering, cloning, stem cell research, and bioinformatics, greatly
benefiting medicine, agriculture, and industry.

Introduction of bioremediation,type and Mechanism

, Bioremediation is a process in which living organisms are used to remove or reduce
environmental pollution. In this method microorganisms such as bacteria, fungi, or
plants break down harmful substances into less toxic or harmless products.

Mechanism

1.​ mechanism of bioremediation begins when microorganisms attach to the
pollutant present in the contaminated environment.​

2.​ Microorganisms produce special enzymes that break complex toxic chemicals
into simpler compounds.​

3.​ During their metabolic processes, microorganisms convert harmful substances
into less toxic products such as carbon dioxide, water, and biomass.​

4.​ Environmental factors such as temperature, pH, oxygen supply, moisture, and
nutrient availability affect the efficiency of the bioremediation process.

Types
Biostimulation is a technique in which nutrients, oxygen, or fertilizers are added to the
contaminated environment to stimulate the activity and growth of microorganisms that
degrade pollutants.​


Bioaugmentation is a type in which specific microorganisms are introduced into the
contaminated area to increase the rate of pollutant degradation.​


Phytoremediation is a method that uses plants to absorb, accumulate, or detoxify
harmful pollutants from soil, water, or air.​


Mycoremediation is a type of bioremediation that uses fungi to break down toxic
substances and environmental pollutants.



Types of pollutants
1 Organic pollutants are chemical substances that contain carbon and mainly come
from industrial waste, pesticides, petroleum products, and sewage. These pollutants
can be broken down by microorganisms during bioremediation.​

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Written in
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