"Modern Biotechnology" PPT

Description

"Modern Biotechnology" PPT

Part One: Scenario Introduction

In 1953, Watson and Crick proposed the double helix structure of the DNA molecule, uncovering the gene and triggering a revolution in the field of life sciences. In 1997, Willamette set off a "cloning trend" that shocked the world. The research results of the "Human Genome Project" in 2000 slowly opened the curtain of the 21st century life science century. Cloning technology, transgenic technology, etc. are all modern biotechnology .

learning target

1. Outline the concept of modern biotechnology.

2. Give examples of applications of cloning technology.

3. Give examples of applications of genetically modified technology.

Modern biotechnology PPT, part 2: learning new knowledge

1. Transgenic technology can purposely change biological traits

Transgenic technology refers to the use of molecular biology technology to transfer the genes of certain organisms into other species, transform the genetic material of organisms, and transform the organisms with modified genetic materials into the goals that humans need in terms of traits, nutrition, and consumer quality. .

discuss:

1. What are the operating objects of genetically modified technology?

2. What are the tasks of transgenic technology?

3. Why can genetically modified bacteria produce large amounts of human insulin in a short period of time?

Safety of genetically modified foods

Genetically modified food refers to the use of molecular biology methods to transfer the genes of certain organisms to other biological species, causing them to have traits or products that the original species does not have. Foods processed and produced using genetically modified organisms as raw materials are genetically modified foods. Through this technology, humans can obtain food quality that better meets the requirements. It has the advantages of high yield, rich nutrition, and strong disease resistance, but the genetic contamination it may cause is also its obvious shortcoming.

2. Cloning technology can copy genetically identical individuals

Cloning is the transliteration of Clone, which means asexual reproduction without the combination of sexual germ cells. Cloning technology is asexual reproduction technology.

"Dolly" is the world's first somatic cell cloned animal, demonstrating that animal cells are as totipotent as plant cells, marking new progress and a major breakthrough in cloning research. After being announced to the world in February 1997, it became the most famous sheep in the world. "Dolly" died of lung infection on February 14, 2003, and his remains were made into specimens and displayed at the National Museum of Scotland in Edinburgh.

Cloning technology benefits mankind

1. Rapidly cultivate excellent crops and livestock;

2. Save rare animals;

3. Prevent and treat diseases and extend life.

Modern biotechnology PPT, part three: summary

1. Transgenic technology

1. Transgenic technology and pharmaceuticals

2. Transgenic technology and diagnosis and treatment of genetic diseases

3. Transgenic technology and agriculture

2. Cloning technology

1. The essence of cloning is asexual reproduction

2.Clone sheep breeding process:

Enucleation→Nucleation→Fusion→Embryo→Surrogacy

3. The significance of cloning: cultivating excellent varieties; preventing and treating diseases, extending life span; saving endangered animals

Modern biotechnology PPT, part 4: learning and testing

1. Scientists successfully connected the human anti-viral interferon gene to the DNA molecules of tobacco cells, giving tobacco the ability to resist viruses. This technology is called ( )

A. Cloning technology B. Grafting technology

C. Tissue culture D. Transgenic technology

2. The application of genetically modified technology in agriculture does not include ( )

A. Cultivate insect-resistant crops

B. Enhance disease resistance of crops

C. Improve the ability of crops to adapt to adverse environments

D. Increase the dosage of pesticides

3. The reason why genetically modified bacteria can produce large amounts of human insulin in a short period of time is ( )

A. Bacteria reproduce very quickly B. Bacteria have strong metabolism

C. Bacteria have strict requirements on reproduction conditions. D. Bacteria are very small.

4. When did the cloned sheep "Dolly" come out? ( )

A.1998 B.1997 C.1996 D.1995

5. Which of the following drugs is not a genetically modified product ( )

A.Insulin B.Interferon C.Coagulation factor D.Penicillin

Keywords: Beijing Normal University version of eighth grade biology PPT courseware volume 2 free download, modern biotechnology PPT download, .PPT format;

For more information about the "Biotechnology Modern Biotechnology" PPT courseware, please click on the Biotechnology ppt Modern Biotechnology ppt tag.

"Applications of Modern Biotechnology" PPT:

"Applications of Modern Biotechnology" PPT Part One Content: Independent Learning 1. What does modern biotechnology include? 2. What is genetic engineering? In what fields is genetic engineering used? 3. Describe the breeding process of giant mice and point out the significance of the success of the experiment. 4...

"Modern Biotechnology" PPT courseware:

"Modern Biotechnology" PPT Courseware Part One: Scenario Introduction In 1953, Watson and Crick proposed the double helix structure of the DNA molecule, unveiled the veil of genes, and triggered a revolution in the field of life sciences. In 1997 Willamette caused a shock...

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Update Time: 2024-10-17

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