"Cells are the basic units of life activities" Approaching Cells PPT Courseware

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"Cells are the basic units of life activities" Approaching Cells PPT Courseware

The first part of the content: Independent preview plan before class

1. Cell theory and its establishment process

1. cell theory

(1) Founders: American botanist ______ and zoologist ______.

(2)Main content

①______ is an organism. All ______ are developed from cells and are composed of cells and cell products.

②A cell is a ______ unit, which not only has its own life, but also contributes to the life of the whole composed of other cells.

③New cells are produced by ______ division.

(3) Significance: Unifying the complex biological world on the basis of the structure of ______, revealing the unity of ______ of cells and the structure of organisms.

2. The process of establishing the cell theory

Johnson: Invented the microscope → observed the overall shape of ______

Robert Hooke: Observe______→Discover and name

Leeuwenhoek: Observed protists, bacteria, red blood cells, sperm

2. Cells are the basic living system

1. The relationship between life activities and cells

2. The basis of life activities of multicellular organisms[Wiring]

3. Structural levels of living systems

(1) Write down the names of the structural levels of the life system represented by each number in the figure.

①______; ②______; ③______; ④______; ⑤______; ⑥______.

(2) The relationship between various levels of the life system

①The most basic life system: ______.

②The largest living system: ______.

③The earliest life form on earth: ______.

1. Decide whether the following statements are true or false

(1) All living things develop from cells and are composed of cells and cell products ()

(2) Cells are the basic unit of structure and function of organisms ()

(3) Viruses are the structural level of living systems ()

(4) Biological macromolecules such as proteins and nucleic acids also belong to the structural level of living systems ()

3. Which of the following statements about cell theory is correct ()

A. Leeuwenhoek was the discoverer of cells

B． All living things are made of cells

C. Cells are relatively independent

D. Animal and plant cell structures are the same

Analysis: A cell is a relatively independent unit, which not only has its own life, but also contributes to the life of the whole composed of other cells.

Answer: C

Cells are the basic unit of life activities PPT, part 2 content: classroom interactive research case

【Course Standards】

Observe various cells using an optical microscope and analyze the submicroscopic structure of cells in combination with electron microscopy photos

Explain that some organisms have only one cell, while others are composed of many cells. These cells vary in shape and function, but all share a similar basic structure

Description The biggest difference between prokaryotic cells and eukaryotic cells is that prokaryotic cells do not have a nucleus surrounded by a nuclear membrane

[Achievement of quality]

1. Based on the scientific history data established by the cell theory, scientific thinking methods such as induction and generalization are used to explain the logical methods used by humans in the process of exploring cells, and to elaborate on the understanding of the scientific development process and the nature of science. (Scientific Thinking Social Responsibility)

2. Through the analysis of the "relationship between life activities and cells" in the textbook, we use inductive and general thinking methods from different aspects of life characteristics, different life activities of different organisms, etc., so that students can form the idea that "cells are the most basic "living systems" view of nature. (Concept of life, scientific thinking)

3. Recognize that cells are the most basic life system; guide students to participate in the discussion of the pros and cons of "research on artificially synthesized viruses" and exchange personal opinions. (social responsibility)

Research point 1: Cell theory and its establishment process

【Teacher's Guidance】

1. What did we learn from the establishment of the cell theory?

Answer: (1) Scientific discovery is the result of the joint participation and joint efforts of many scientists.

(2) The process of scientific discovery is inseparable from the support of technology.

(3) Scientific discovery requires a combination of rational thinking and experimentation.

(4) The establishment process of cell theory is a process of continuous development, inheritance, revision and development.

2. Does the cell theory established in the 19th century clarify that all living things use cells as the basic unit?

Answer: No, it illustrates that animals and plants are all based on cells.

3. Does the cell theory mainly clarify the diversity of cells or the unity of the biological world?

Answer: The cell theory mainly explains the unity of the biological world.

【Detection feedback】

1. (Must pass the test) Which of the following statements about the cell theory and its contents is incorrect ()

A. The founders were mainly Schleiden, Schwann and Virchow

B． All animals and plants develop from cells

C. New cells can arise from old cells

D. Reveals the diversity of biological structures

2. (Level selection test) Regarding the establishment process of cell theory, which of the following scientists is inconsistent with his views ()

A. Hooke observed cork tissue and named cells

B． Leeuwenhoek observed red blood cells, bacteria, etc. and named the cells

C. Schleiden and Schwann proposed that cells are the building blocks of plants and animals

D. Virchow proposed that cell division produces cells

Cells are the basic unit of life activities PPT, the third part of the content: [Backbone Implementation]

1. The main contents of cell theory:

(1) All animals and plants are composed of cells;

(2) Cells are the basic unit of structure and function of organisms;

(3) Cells can only come from cell division.

2. Viruses do not have a cellular structure and must rely on living cells to survive.

3. The structural levels of living systems are cells, tissues, organs, systems, individuals, populations and communities, ecosystems and biosphere.

4. Cells are the most basic living systems on earth.

Keywords: Free download of the PPT courseware for High School Biology Compulsory Course 1 from the People's Education Press, PPT download of cells as the basic unit of life activities, PPT download of Approaching Cells, .PPT format;

For more information about the PPT courseware "Approaching Cells Cells Are the Basic Units of Life Activities", please click the "Approaching Cells ppt Cells Are the Basic Units of Life Activities ppt" tag.

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Update Time: 2024-11-19

This template belongs to biology courseware High School Biology Compulsory Course 1, published by People's Education Press industry PPT template

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