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PPT: Biotechnology - Principle & Processes
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Page 1 Biotechnology - Principles and Processes Explore the fascinating world of biotechnology, from ancient fermentation to cutting-edge genetic engineering. Page 2 Biotechnology - Principles and Processes Explore the fascinating world of biotechnology, from ancient fermentation to cutting-edge genetic engineering. Principles of Biotechnology Definition Biotechnology deals with techniques of using live organisms or enzymes from organisms to produce products and processes useful to humans. Evolution From ancient fermentation to modern DNA technology and genetic engineering. Modern Focus Emphasizes GMOs and molecular techniques for industrial-scale production. Page 3 Biotechnology - Principles and Processes Explore the fascinating world of biotechnology, from ancient fermentation to cutting-edge genetic engineering. Principles of Biotechnology Definition Biotechnology deals with techniques of using live organisms or enzymes from organisms to produce products and processes useful to humans. Evolution From ancient fermentation to modern DNA technology and genetic engineering. Modern Focus Emphasizes GMOs and molecular techniques for industrial-scale production. EFB European Federation of Biotechnology (EFB) Provides a modern, traditional definition of biotechnology. Definition given by EFB The integration of natural science and organisms, cells, parts thereof, and molecular analogues for products and services9 Practical Applications Emphasizes both scientific foundation and practical utility. Page 4 Biotechnology - Principles and Processes Explore the fascinating world of biotechnology, from ancient fermentation to cutting-edge genetic engineering. Principles of Biotechnology Definition Biotechnology deals with techniques of using live organisms or enzymes from organisms to produce products and processes useful to humans. Evolution From ancient fermentation to modern DNA technology and genetic engineering. Modern Focus Emphasizes GMOs and molecular techniques for industrial-scale production. EFB European Federation of Biotechnology (EFB) Provides a modern, traditional definition of biotechnology. Definition given by EFB The integration of natural science and organisms, cells, parts thereof, and molecular analogues for products and services9 Practical Applications Emphasizes both scientific foundation and practical utility. Principles of Biotechnology 1. Genetic Engineering Direct manipulation of DNA and RNA to alter genetic structure. Add, remove, or modify genes Create desired phenotypic changes Increase crop yields Produce therapeutic proteins 2. Bioprocess Engineering Controlled handling of biological systems during production. Contamination-free environments Growth in bioreactors Mass production of vaccines Production of antibiotics and enzymes Page 5 Biotechnology - Principles and Processes Explore the fascinating world of biotechnology, from ancient fermentation to cutting-edge genetic engineering. Principles of Biotechnology Definition Biotechnology deals with techniques of using live organisms or enzymes from organisms to produce products and processes useful to humans. Evolution From ancient fermentation to modern DNA technology and genetic engineering. Modern Focus Emphasizes GMOs and molecular techniques for industrial-scale production. EFB European Federation of Biotechnology (EFB) Provides a modern, traditional definition of biotechnology. Definition given by EFB The integration of natural science and organisms, cells, parts thereof, and molecular analogues for products and services9 Practical Applications Emphasizes both scientific foundation and practical utility. Principles of Biotechnology 1. Genetic Engineering Direct manipulation of DNA and RNA to alter genetic structure. Add, remove, or modify genes Create desired phenotypic changes Increase crop yields Produce therapeutic proteins 2. Bioprocess Engineering Controlled handling of biological systems during production. Contamination-free environments Growth in bioreactors Mass production of vaccines Production of antibiotics and enzymes Conceptual Development of the Principles of Genetic Engineering Advantages of Sexual Reproduction over Asexual Reproduction Sexual reproduction: Produces genetic variation. Leads to unique genetic combinations, some beneficial for survival. Asexual reproduction: Preserves genetic uniformity (no variation). Traditional hybridisation procedures used in plant and animal breeding, very often lead to inclusion and multiplication of undesirable genes along with the desired genes. Genetic Engineering Techniques Recombinant DNA technology Gene cloning Gene transferRead More
FAQs on PPT: Biotechnology - Principle & Processes
| 1. What exactly is genetic engineering and how does it work in biotechnology? |  |
Ans. Genetic engineering involves deliberately altering an organism's DNA by inserting, removing, or modifying specific genes to achieve desired traits. Scientists use restriction enzymes to cut DNA at precise locations, then insert foreign genetic material using vectors like plasmids or viral particles. This recombinant DNA technology forms the foundation of modern biotechnology applications, enabling production of insulin, vaccines, and genetically modified organisms for agriculture and medicine.
| 2. How do restriction enzymes and DNA ligase work together in recombinant DNA technology? | |
Ans. Restriction enzymes act as molecular scissors, cutting double-stranded DNA at specific recognition sequences to create sticky or blunt ends. DNA ligase then seals the phosphodiester bonds between DNA fragments, joining them together. This enzyme pair is essential in recombinant DNA processes-restriction enzymes fragment source DNA while ligase attaches foreign genes into vectors, creating hybrid molecules used in cloning and gene therapy applications.
| 3. What's the difference between plasmids and vectors in genetic engineering? | |
Ans. Plasmids are small, circular DNA molecules found in bacteria that naturally replicate independently; vectors are delivery systems (including plasmids, viruses, or cosmids) designed to carry foreign genetic material into host cells. While all plasmids can function as vectors, not all vectors are plasmids. In biotechnology processes, vectors are engineered with selectable markers and restriction sites to efficiently introduce recombinant DNA into target organisms for gene expression and trait modification.
| 4. Why is PCR (polymerase chain reaction) so important for amplifying DNA in modern biotechnology? | |
Ans. PCR exponentially amplifies specific DNA segments through repeated cycles of heating and cooling, producing millions of copies from minimal starting material. This thermal cycling technique denatures DNA, allows primers to bind target sequences, and enables DNA polymerase to synthesize new strands. PCR revolutionised biotechnology by enabling rapid gene identification, disease diagnosis, forensic analysis, and efficient production of recombinant proteins without requiring live cell cultures.
| 5. How do transformation and transfection differ when introducing foreign genes into cells? | |
Ans. Transformation is the uptake of naked DNA by bacterial or plant cells, often achieved through heat shock or chemical methods using competent cells. Transfection refers to introducing foreign DNA into animal cells using electroporation, microinjection, or lipofection techniques. Both processes allow recombinant DNA to enter host cells where it integrates into chromosomes or replicates as plasmids, enabling gene expression and biotechnology applications like producing genetically modified organisms and therapeutic proteins.
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