"Wonderful Cloning" PPT courseware 6

Description

"Wonderful Cloning" PPT courseware 6

Students, do you know about cloning?

Cloning is the transliteration of the English "clone" or "cloning", and the English "clone" originates from the Greek "Klone". Its original meaning is to cultivate plants by vegetative or vegetative propagation from seedlings or twig cuttings, such as Cuttings and grafting. In mainland China, it is translated as "asexual reproduction", but in Taiwan, Hong Kong and Macao, it is generally translated as copying, trans-reproduction or group reproduction. Chinese also has more precise words for cloning, "asexual reproduction", "clonalization" and "pure lineation". Cloning refers to the asexual reproduction of organisms through somatic cells, and a population composed of offspring individuals with identical genotypes formed by asexual reproduction. It is usually a process that uses biotechnology to produce offspring with the same genetic tissue as the original individual through asexual reproduction.

Overview

Part One: "What is Cloning": Regarding the question of what cloning is, the article goes from plants to animals, from the common phenomenon of "cuttings" to esoteric scientific concepts. It can be said that it is easy to understand from the simple to the deep.

Part Two: "Before and after the birth of cloned crucian carp": outlines the development of science and technology, introduces to us the cloning experiments conducted by Chinese and foreign scientists and their progress, and highlights the research results and contributions of Chinese scientists in cloning experiments.

Part Three: "Dolly the Cloned Sheep": Describes in detail the birth process of the cloned sheep "Dolly", and reveals the great significance and huge repercussions of the success of the cloned sheep.

Part 4: "Cloning technology benefits mankind": Cloning technology benefits mankind.

Word explanation:

Reproduce: Gradually increase or increase.

Live in peace with each other: live in peace with each other without conflict.

Frequency: The number of times something happens per unit of time.

Pulse: A brief rise or fall in current or voltage.

Coordination: Cooperate appropriately.

Rare and valuable: It means that something that is not easy to do can actually be done, and it is worthy of preciousness. Difficult, not easy to do.

Potential: something that exists within something and is not easily discovered or detected.

On the verge of: approaching, approaching.

Practical: realistic and down-to-earth.

Mixture of sadness and joy: The emotions of sadness and joy are intertwined.

Read the first paragraph of the article, "A bacterium can be divided into two parts in about 20 minutes; a grape branch cut into ten segments may become ten grapes; a cactus is cut into several pieces, and each piece will take root when it hits the ground; A strawberry plant relies on its stolons that "crawl" along the ground to grow hundreds of strawberry seedlings in one year..."

The author starts with common creatures. What is his purpose?

In order to explain advanced science and technology in an easy-to-understand and clear way.

When introducing "what is cloning", what explanation methods does the author use? What order of instructions was used?

Give examples, define, explain, list numbers

A logical sequence from concrete to abstract, from phenomenon to essence.

What is the explanatory content of this part of the first paragraph of Part Three?

The "creation" process of "Dolly" the sheep, and revealed the great significance and huge repercussions of the success of cloning sheep.

What rhetorical device is used in the first sentence of the second paragraph of Part Three? what's the effect?

The rhetorical technique of asking questions is used.

The function is to attract the reader's attention.

Why did the birth of "cloned sheep" cause a sensation around the world?

First, it marks new progress and major breakthroughs in cloning technology. "This result proves that the so-called highly differentiated cells in the animal body that perform special functions and have specific shapes have the same potential ability to develop into complete individuals as fertilized eggs."

Second, it can both benefit and cause harm to mankind.

Comprehension of writing characteristics:

1. The structural arrangement is clever and novel

The full text is divided into four parts with four subtitles, which explain cloning from four aspects: the meaning of cloning, cloning experiments, cloning development and the benefits of cloning technology to mankind. There are close logical connections between each part, making the full text clearly layered. , clear and organized.

2. The article uses a variety of explanation methods to explain difficult scientific principles in a simple and easy-to-understand manner.

For example, in the first subtitle of the article, the author uses three explanation methods to illustrate "cloning": giving examples, defining and citing information. The author uses a variety of explanation methods to introduce the knowledge about cloning, so that people can have a deeper understanding of the scientific principle of "cloning" for fitness.

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For more information about the "Wonderful Cloning" PPT courseware, please click the "Wonderful Cloning" ppt tag.

"Wonderful Cloning" PPT teaching courseware:

Contents of the first part of the "Wonderful Cloning" PPT teaching courseware: Text introduction More than ten years ago, many Chinese media reprinted a shocking news reported by foreign media: a group of scientific madmen controlled by a cult organization were carrying out a conspiracy deep in the desert of Nevada, USA. With one item...

"Wonderful Cloning" PPT download:

"Wonderful Cloning" PPT Download Part One: Learning Objectives 1. Clarify the structure of the text and understand the content of the article. 2. Understand the order and method of explanation used in this article. 3. Cultivate a persevering scientific attitude and a scientific spirit of truth-seeking and innovation. Get closer to the author Tan Jiazhen...

"Wonderful Cloning" PPT:

"Wonderful Cloning" PPT Part One: Classroom Introduction Tan Jiazhen (1909.9-2008.11), academician of the Chinese Academy of Sciences, geneticist, and educator. He has been engaged in teaching and researching genetics for more than 70 years, and has taught general biology and comparative anatomy of vertebrates.

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Update Time: 2024-09-08

This template belongs to Chinese courseware Lu Jiao edition seventh grade Chinese language volume 2 industry PPT template

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