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
Beijing Normal University Edition Seventh Grade Biology Volume 2
People's Education Edition seventh grade biology volume 1
Beijing Normal University Edition Eighth Grade Biology Volume 1
Beijing Normal University Edition Seventh Grade Biology Volume 1
People's Education Press seventh grade biology book volume 2
Beijing Normal University Edition Eighth Grade Biology Volume 2
High School Biology Compulsory Course 1, published by People's Education Press
Jiangsu Education Edition 8th Grade Biology Volume 1
Jiangsu Education Edition Seventh Grade Biology Volume 1
Jiangsu Education Edition Seventh Grade Biology Volume 2
Jiangsu Education Edition 8th Grade Biology Volume 2
!["The Life of Cells" Cells are the basic units of life activities PPT courseware 2](http://daogebangong.oss-cn-beijing.aliyuncs.com/ppt/preview/1/09282c74-5152-4f03-980b-b62eeab97edd.webp)
Category | Format | Size |
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People's Education Edition seventh grade biology volume 1 | pptx | 6 MB |
Description
"The Life of Cells" Cells are the basic units of life activities PPT courseware 2
substances contained in cells
Scientific research shows that water, oxygen, glucose, sucrose and many other substances are composed of molecules (a basic particle that constitutes substances).
Both water and sucrose are made up of molecules
Matter is made up of molecules
The dissolution of sucrose in water means that the sucrose molecules spread out and squeeze into the water molecules
1. Substances in cells can be divided into two categories
Distinguish between organic and inorganic substances?
Burn peanut seeds. After the seeds are burned, the remaining ash is inorganic salts, and the burned material is organic matter.
The life of cells requires water and a variety of other nutrients. When these substances enter the cell, they must pass through the cell's boundary - the cell membrane. The cell membrane separates the inside of the cell from the external environment, giving the cell a relatively stable internal environment. Does the cell membrane seal the cell?
2. The cell membrane controls the entry and exit of substances into the cell
The cell membrane does not seal the cell;
The cell membrane controls the entry and exit of substances
Useful substances, please come in;
Other substances, blocking blocking;
Cellular waste, get out, get out.
3. Energy converters in cells
Energy needed by plants: mitochondria, chemical energy in organic matter, chloroplasts, light energy
Energy needed by animal bodies Mitochondria Chemical energy of organic species (from food)
Mitochondria and chloroplasts are energy converters in cells.
Consolidation exercises
1 The structure in the cell that controls the entry and exit of substances is ( )
A cell wall B cell membrane
C Cytoplasm D Nucleus
2. The energy converter in animal cells is ( )
A mitochondria B cell membrane
C chloroplast D cell nucleus
3. The energy converters in plant cells are _ and _ ( )
A cell wall and chloroplasts
B cell membrane and mitochondria
C Cytoplasm and chloroplasts
D Mitochondria and chloroplasts
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For more information about the PPT courseware "Cells are the basic unit of life activities, the life of cells", please click the Cells are the basic units of life activities ppt cell life ppt tag.
"The Life of Cells" Cells are the basic units of life activities PPT courseware 9:
"The Life of Cells" Cells are the basic units of life activities PPT courseware 9 Use your brain. Do you need to add nutrients to the cells in the culture flask to keep them alive? Nutrients need to be added to maintain cell life. Substances in cells. Speculation: Substances contained in fruits...
"The Life of Cells" Cells are the basic units of life activities PPT courseware 8:
"The Life of Cells" Cells are the basic units of life activities PPT courseware 8 [Autonomous learning] P50~52: 1. The substances in cells include two categories: _______ and _______. The former is composed of ______, ______ and _____, and the latter is composed of ______, ______..
"The Life of Cells" Cells are the basic units of life activities PPT courseware 7:
"The Life of Cells" Cells are the basic units of life activities PPT courseware 7 Think about it, discuss it and try to make your own guesses! (1) Sterile, non-toxic environment (2) Nutrients (synthetic culture fluid) (3) Appropriate temperature and pH value (4) Appropriate...
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Update Time: 2024-09-06
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