science, technology, and societycontents.kocw.or.kr/document/wcu/2011/04/engineering... ·...
TRANSCRIPT
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Science, Technology,
and Society
Chapter 1
and Society
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Contents
11Technology and Society
22Science and Technology
33The Biology Century
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Technology
� Try to imagine a world without technology.
� Computer
� TV
� Car
� Heating (Energy)
� Cooling
� Clothes
� Food
� House
� Lamp, paper, pen, chair, …..
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Technology and Society
� Technology
� Changes the
environment and society
� Webster’s definition:
“the totality of means employed to provide
objects necessary for human sustenance
and comfort”
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Technology and Society
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Technology and Society
� Society� Creates filters for technology
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Science and Technology
� Science
� Search for knowledge
� Way of understanding ourselves and the physical world
� Process of asking questions and
� Technology
� Practical application of knowledge
� Way of adapting ourselves to the physical world
� Process of finding solutions � Process of asking questions and finding answers, then creating broad generalizations
� Looks for order or patterns in the physical world
� Evaluated by how well the facts support the conclusion or theory
� Limited by the ability to collect relevant facts
� Discoveries give rise to technological advances
� Process of finding solutions to human problems to make lives easier and better
� Looks for ways to control the physical world
� Evaluated by how well it works
� Limited by financial costs and safety concerns
� Advances give rise to scientific discoveries
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The Relationship
Between Science and Technology
Technology Science
Experience-based
Provide tool
for scientific observation
TitleAdd your text
Understanding of Nature
Derive technology
developmentfor scientific observation
and experimentsdevelopment
Science-based
technology
Derive progress
of science
Acceleration of
technological change
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The Nature of Science
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The Scientific Process
(from specific to general)
(from general to specific)
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The Biology Century
� The past two centuries
� Technology driven by physics and chemistry
� Industrial Revolution, Information Age,
Green RevolutionGreen Revolution
� The Biology Century will be fueled by
biotechnology.
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Biotechnology
� Definition
� The use of living organisms or life processes to
solve problems or make useful products
� Ancient biotechnology� Ancient biotechnology
� Trial and error-based
� Modern biotechnology
� The use of cells and biological molecules or cellular
and biomolecular processes to solve problems and
make useful products
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Types and Applications of Biotechnology
TitleAdd your text
Biotechnology Industry
• Bioprocessing technol.
• Cell culture technol.
Understanding
of Nature
Derive
• Human health care
• Agricultural production
• Recombinant DNA technol.(genetic engineering)
• Monoclonal antibody tech.
• Biosensor technol.
• Microarray technol.
• Protein engineering tech.
Derive
technology
development
• Food and beverages
• Enzyme industry
• Chemical manufacturing
• Energy
•Waste treatment
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Characteristics
of Cells and Biomolecules
� Specificity, precision, and predictability
� Unity and flexibility� Unity and flexibility
� Reproduction and renewable resources
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The History
of Crop Genetic Modification
� Stage1
� Genetic modification through seed selection
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The History
of Crop Genetic Modification
� Stage 2
� Genetic modification through plant breeding and
selection
• Invention of the microscope
• Hand pollination• Hand pollination
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The History
of Crop Genetic Modification
� Stage 3
� Science-based plant breeding
• Based on Mendel’s work
�� Stage 4
� Plant genetic engineering
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Model of Inheritance
� Fluid-blending model
� Discrete-particle model
� Mendel’s theory of inheritance
(1865, proved in 1900)(1865, proved in 1900)
- Discrete-particle (now known as gene) model
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The Nature of Genetic Material
� Frederick Griffith (1928)� ‘Transforming factor’ transferred from dead smooth virus to
rough virus
� O.T. Avery (1943)� The ‘transforming factor’ was DNA
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The Genetic Material
Protein or DNA?
� The DNA-vs.-protein debate was resolved.� Alfred Hershey and Martha Chase (1952)
----- Identification of DNA as genetic material
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DNA Double Helixby J. Watson and F. Crick
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DNA Double Helix
� DNA 그림
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Central Dogmaby F. Crick
DNA RNA Protein (단백질)
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Biotechnology & Bioindustry
� Egypt, Fermentation
(bread, cheese, wine, beer)
� 1850s, Pure Cultures of Microorganisms� 1850s, Pure Cultures of Microorganisms
� 1940s, Random mutation
� 1973, Recombinant DNA technology
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Recombinant DNA Technology
� Discovery of restriction enzyme and ligase
� Development of recombinant DNA technology
� Herbert Boyer and Stanley Cohen (1973)
Cutting and
Joining DNA
Molecules