Fifth Grade Science Volume 1, Textbook Edition
Science Edition for Sixth Grade Science Volume 2
Third Grade Science Volume 2, Textbook Edition
Third Grade Science Volume 1, Textbook Edition
Science Edition for Sixth Grade Science Volume 1
Fourth Grade Science Volume 2, Textbook Edition
Fourth Grade Science Volume 1, Textbook Edition
Qingdao Edition Fourth Grade Science Volume 2
Hunan Education Edition Fourth Grade Science Volume 1
E-education edition fifth grade science volume 1
E-education edition fifth grade science volume 2
Qingdao Edition Fifth Grade Science Volume 2
Zhejiang Education Edition Seventh Grade Science Volume 2
Fifth Grade Science Volume 2, Textbook Edition
Fourth-grade science volume 2 of the E-education edition
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Category | Format | Size |
---|---|---|
Science Edition for Sixth Grade Science Volume 2 | pptx | 6 MB |
Description
"Use a microscope to observe the living world around you (3)" Micro World PPT courseware
what are microorganisms
Microorganisms are a general term for all tiny organisms that are invisible or unclear to the naked eye.
Microorganisms include a large group of organisms including bacteria, germs, fungi and some small protozoa.
Since Leeuwenhoek discovered microorganisms with a homemade microscope, scientists have discovered through observation that there are many microorganisms living in nature. As many as 100,000 species of microorganisms have been discovered and named.
Collect and culture microorganisms
Notice
If the microorganisms move quickly and are difficult to observe, we can first put a small amount of absorbent cotton fiber on the slide, then drop a drop of pond water on it, and cover it with a cover slip.
You can also use absorbent paper on the edge of the coverslip to absorb excess water to control the movement of microorganisms.
Do microorganisms have biological characteristics?
Characteristics of living things:
① Life requires nutrition;
②Able to breathe;
③Can discharge waste from the body;
④Response to external stimuli;
⑤Growth and reproduction;
⑥Except for viruses, all living things are composed of cells;
Class summary
1. Use a microscope to see tiny organisms that cannot be seen with the naked eye.
2. There are many microorganisms of different forms living in the water.
3. Microorganisms usually have special structures and functions to adapt to their surrounding environment.
4. Microorganisms have biological characteristics, such as: having certain needs for the environment, responding to external stimuli, and being able to reproduce.
Classroom testing
1. Fill in the blanks
1. We can also use ( ) to cultivate tiny organisms. The reason why the water in the fish tank turns green is the result of ( ).
2. The microorganisms I know include ( ), ( ), ( ), etc.
3. ( ) is the most basic functional unit of a living body. Life activities such as ( ), ( ), excretion, and development of organisms are all carried out through it.
2. Judgment
1. The bottled water we drink has been purified, so there are no microorganisms in it. ( )
2. Microorganisms are living organisms and therefore also metabolize. ( )
3. We can use hay to cultivate microorganisms. ( )
4. When making microbial slide specimens, we can control the movement of microorganisms by absorbing excess water. ( )
5. A drop of water in a pond contains many tiny organisms. ( )
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For more information about the PPT courseware "Use a Microscope to Observe the Living World Around You in a Tiny World", please click on the Tiny World ppt Use a Microscope to Observe the Living World Around You ppt tag.
"Use a microscope to observe the living world around you (3)" Micro World PPT teaching courseware:
"Observe the living world around you with a microscope (3)" Micro World PPT teaching courseware Part One: Questions before class 1. Move the film to the left, where will the objects under the microscope move? Move to the right 2. What does the word above look like when placed under a microscope? 3.How to make foreign...
"Use a microscope to observe the living world around you (3)" Tiny World PPT download:
"Use a microscope to observe the living world around you (3)" Micro World PPT Download Part One: Exploring New Knowledge (1) Collecting and cultivating microorganisms. There are a large number of microorganisms living in the water of fish tanks, ponds, and creeks, and they are the main places for collecting microorganisms. Use dry...
"Observe the living world around you with a microscope (3)" Tiny World PPT:
"Observe the living world around you with a microscope (3)" Tiny World PPT Part One: Observing Microorganisms in Water Since Leeuwenhoek discovered microorganisms with a homemade microscope, scientists have discovered through observation that there are many microorganisms living in nature. let me..
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Update Time: 2024-08-22
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