People's Education Edition Biology for Grade 8, Volume 1
People's Education Edition Biology for Grade 8, Volume 2
People's Education Edition seventh grade biology volume 1
People's Education Press High School Biology Compulsory Course 2
Beijing Normal University Edition Seventh Grade Biology Volume 2
People's Education Press seventh grade biology book volume 2
Beijing Normal University Edition Eighth Grade Biology Volume 1
Beijing Normal University Edition Eighth Grade Biology Volume 2
Jiangsu Education Edition Seventh Grade Biology Volume 1
High School Biology Compulsory Course 1, published by People's Education Press
Beijing Normal University Edition Seventh Grade Biology Volume 1
Jiangsu Education Edition 8th Grade Biology Volume 1
Jiangsu Education Edition Seventh Grade Biology Volume 2
Jiangsu Education Edition 8th Grade Biology Volume 2
Category | Format | Size |
---|---|---|
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 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 ______, ______, ______ and _______, and generally contains carbon.
2. ______ can control the entry and exit of substances. _____ can move in and out of cells freely, _______ can enter cells, but harmful substances cannot enter cells.
3. There are ______ and ______ energy converters in plant cells. Chloroplasts can convert ______ into _______, and mitochondria can convert ______ into _______.
[Think about it, discuss it]
Scientists research artificial skin. During the development process, the patient's skin needs to be cultured in a petri dish.
How can a patient's cells survive once they're put into a dish? What should be added to the Petri dish?
1. Substances needed for cell life
The life of living things cannot be separated from matter and energy, and the same is true for cells.
Sucrose dissolves in water
Both water and sucrose molecules are in constant motion. Sucrose dissolves in water because the moving sucrose molecules squeeze into the gaps between water molecules.
①Classification of substances in cells
substances in cells
Inorganic matter
Type: water, oxygen, inorganic salt
Characteristics: Small molecules, simple structure, generally free of carbon
organic matter
Types: carbohydrates, lipids, proteins and nucleic acids
Characteristics: Large molecules, complex structures, generally containing carbon
②The cell membrane controls the entry and exit of substances
The cell membrane separates the inside and outside of the cell. The cell membrane has a structure suitable for transport. It allows the substances needed by the cell to enter and keeps some substances out. Cells will produce some unnecessary or harmful substances during their life, and these substances must also be excreted through the cell membrane.
【Standard Compliance Test】
1. Multiple choice questions
1. The most abundant substance in cells is ( )
A. Water B. Sugar
C. Protein D. Inorganic salt
2. ① Cytoplasm ② Chloroplast ③ Mitochondria ④ In the vacuole, the energy converter is ( )
A、①② B、②③
C、③④ D、①④
3. In an animal cell, the cell structure that allows sugar substances to enter the cell and expels carbon dioxide and blocks it out of the cell is: ( )
A. Cytoplasm B. Cell wall C. Cell membrane D. Vacuole
4. In the leaf cells of green plants, the place where photosynthesis occurs is
①, it can convert the ② absorbed by chlorophyll and other pigments into ③ and store it in the organic matter it produces. The above ①②③ respectively represent ( )
A. Mitochondria, light energy, chemical energy
B.Chloroplasts, chemical energy, light energy
C. Cell nucleus, chemical energy, light energy
D.Chloroplasts, light energy, chemical energy
2. Judgment questions
1. Chloroplasts are unique to plant cells, and mitochondria are unique to animal cells. ( )
2. The cell membrane completely seals the cell. ( )
3. The combination of organic matter and oxygen can release energy through complex changes. ( )
4. Chloroplasts convert light energy into chemical energy, and mitochondria convert chemical energy into light energy. ( )
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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 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...
"The Life of Cells" Cells are the basic units of life activities PPT courseware 6:
"Cell Life" Cells are the basic units of life activities PPT courseware 6 Think about it and discuss it. In order to solve the problem of skin grafting for patients with large-scale burns, scientists have developed artificial skin. During the development process, human skin cells need to be placed Culture in culture bottles. ..
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Update Time: 2024-10-17
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