People's Education Edition Biology for Grade 8, Volume 1
People's Education Edition Biology for Grade 8, Volume 2
People's Education Press High School Biology Compulsory Course 2
People's Education Edition seventh grade biology volume 1
Beijing Normal University Edition Seventh Grade Biology Volume 2
Beijing Normal University Edition Eighth Grade Biology Volume 1
People's Education Press seventh grade biology book volume 2
Beijing Normal University Edition Eighth Grade Biology Volume 2
Beijing Normal University Edition Seventh Grade Biology Volume 1
Jiangsu Education Edition 8th Grade Biology Volume 1
Jiangsu Education Edition Seventh Grade Biology Volume 1
High School Biology Compulsory Course 1, published by People's Education Press
Jiangsu Education Edition Seventh Grade Biology Volume 2
Jiangsu Education Edition 8th Grade Biology Volume 2
!["Cell Differentiation to Form Tissue" PPT](http://daogebangong.oss-cn-beijing.aliyuncs.com/ppt/preview/1/62793bf0-ba48-4e87-a268-484836434112.webp)
Category | Format | Size |
---|---|---|
Beijing Normal University Edition Seventh Grade Biology Volume 1 | pptx | 6 MB |
Description
"Cell Differentiation to Form Tissue" PPT
Part One: Situation Import
Review and Recall: Can you try to describe the process of cell division?
Cell division process:
Cell division is the process by which a cell divides into _______ cells. The process of division is that ______ first divides into two, and then ________ divides into two parts, each containing one ______, and a new ______ is formed in the center of the original cell; finally, a new _______ is formed in the plant cell. So one cell formed two cells.
learning target
1. List what kind of organizations a certain part of your body belongs to.
2. Identify the cellular characteristics of the four basic tissues of the human body.
3. Try to use a microscope to observe the four basic tissues of the human body.
Cell differentiation forms tissue PPT, part 2 content: Exploration topic one
Humans and animals have four basic tissues
1. Cells differentiate into tissues
2. The process of cell differentiation
During the process of fertilized eggs dividing to produce new cells, some cells lose their ability to divide. Later, these cells that lost the ability to divide gradually changed in shape, structure and function, and each had different functions. This process is called cell differentiation.
3. The concept of organization
Cell differentiation produces different cell groups. Each cell group is composed of many cells and intercellular matrix with similar shapes, structures, and functions. Tissues are cells composed of one or more types of cells. group.
4. Basic organization of humans and animals
Thinking: Where are the tissues in the picture located in the animal body?
(1) Epithelial tissue
Epithelial tissue covers the surface of the body and has functions such as protection and secretion. For example, skin epithelial tissue can protect the body surface, and small intestinal epithelial tissue can secrete intestinal juice.
(2) Connective tissue
There are many types of connective tissue, including bone tissue, blood, etc. Connective tissue has functions such as support, connection, protection, and nutrition.
(3) Muscle tissue
Muscle tissue is mainly composed of muscle cells, which have functions such as contraction and relaxation.
(4) Nervous tissue
Nervous tissue forms a communication network that can receive stimulation, generate and conduct excitement.
Cell differentiation forms tissue PPT, part 3 content: Exploration topic 2
main tissues of plants
Why can a small tree grow taller and thicker every year?
1. Several main tissues of plants
(1) Characteristics of meristem
The cells are small, the cell walls are thin, and the nuclei are large,
The cytoplasm is dense and has
Strong ability to divide and proliferate.
(2) Characteristics of protective organizations
The epidermal cells on the surface of roots, stems, and leaves form protective tissue and have the function of protecting the tender internal parts.
(3) Characteristics of the transmission organization
The vessels in stems, leaf veins, root tip mature areas, etc. can transport water and inorganic salts and are conductive tissues.
(4) Characteristics of nutritional tissue
Roots, stems, leaves, flowers, fruits, and seeds all contain a large amount of nutrient tissue. The cell wall of vegetative tissue is thin and the vacuoles are large, which have the function of storing nutrients. The vegetative tissue containing chloroplasts can also perform photosynthesis.
Cell differentiation forms tissue PPT, part 4: training to meet standards
1. The formation of organizations is due to ( )
A. Cell division b. differentiation of cells
C. Cell growth D. cell division and growth
2. Except which one, all others are animal tissues ( )
A. Epithelial tissue B. connective tissue
C. Protective organization D. nervous tissue
3. The structural characteristics of epithelial tissue are ( )
A. Cells are tightly arranged and there is little intercellular substance
B. Larger intercellular spaces and less intercellular matrix
C. Cells are tightly arranged and there is much intercellular substance
D. Larger intercellular spaces and more intercellular matrix
Keywords: Beijing Normal University version of the seventh-grade biology PPT courseware for free download, cell differentiation and tissue formation PPT download, .PPT format;
For more information about the PPT courseware "The Structural Levels of Organisms, Cell Differentiation Forms Tissues", please click the Structural Levels of Organisms ppt Cells Differentiate to Form Tissues ppt tag.
"Cell Differentiation to Form Tissue" PPT courseware:
"Cells Differentiate to Form Tissues" PPT courseware Part One: Teaching Objectives Knowledge Objectives Overview Various tissues of organisms are formed by cell division and differentiation. Ability Objectives 1. Identify several basic tissues of plants. 2. Identify several basic tissues of the human body. ..
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Update Time: 2024-09-11
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