Who was the first person to make microscopes?
Antonie van Leeuwenhoek
He was the first person to see single-celled organisms and called them ‘animalcules’.
Who was the first scientist to use the word ‘cell’?
Robert Hooke
He used the word ‘cell’ because the cork cells he observed reminded him of the small rooms monks lived in.
What are the two important parts of the cell theory developed by Schleiden and Schwann?
- All living things are composed of cells
- The cell is the basic unit of life
What is the best magnification that you can get with a light microscope?
2000x
To see smaller parts of cells, an electron microscope is used.
How would the edge of a razor blade appear under a light microscope?
Blurry and not very detailed
Under an electron microscope, it would appear much clearer and show detailed structures.
What is a microscope?
An instrument used to see objects that are too small for the naked eye
Microscopes can be optical, electron, or other types depending on their function.
What is the eyepiece?
The part you look through to see the specimen; usually has 10x magnification.
Where is the eyepiece located?
At the very top of the microscope, above the tube.
What is the tube?
The long part that connects the eyepiece to the objective lenses.
Where is the tube located?
Between the eyepiece and the revolving nosepiece.
What is the coarse adjustment knob?
The large knob used to focus on the specimen roughly by moving the stage up or down.
Where is the coarse adjustment knob located?
On the side of the microscope, usually the bigger of the two focusing knobs.
What is the fine adjustment knob?
The small knob used to fine-tune the focus after the coarse adjustment.
Where is the fine adjustment knob located?
Next to or inside the coarse adjustment knob on the side.
What is the arm?
The part you hold to carry the microscope; supports the tube and stage.
Where is the arm located?
On the side, connecting the base to the tube and stage.
What are the objective lenses?
The lenses closest to the specimen; provide different magnification powers.
Where are the objective lenses located?
On the revolving nosepiece, just above the stage.
What is the stage?
The flat platform where you place the slide.
Where is the stage located?
In the middle of the microscope, under the objective lenses.
What is the light source?
The part that shines light upward through the slide to make the specimen visible.
Where is the light source located?
At the base of the microscope, under the stage.
What does magnification mean in a microscope?
Magnification means how much larger an object looks compared to its real size.
Example: 100x means the image looks 100 times bigger.
What does resolution mean in a microscope?
Resolution is how clear and detailed the image looks. Higher resolution means you can see smaller details.
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Science Unit B Cells And Systems (Needs Of Living Things, Intro To Cells)64
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Social Worldviews8
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English Parts of a Story11
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Math Ratios and Unit Rates30
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English Short Story Terms46
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English Literary Devices30
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Social Roman Empire And Medieval to Renaissance Europe76
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Social Differences Between Hierarchies In Feudalism28
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English Definitions For Words In Red Death (Optional)68
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English Vocabulary Comprehension Red Death (Optional)10
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Science Microscopes36
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Social Differences Between Hierarchies Part 235
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Science Unit B Cells And Systems Part 2 (Osmosis, Systems, Health Issues)162
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English Learning How To Reference, Citing25
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Science Cell Parts47
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Math Percents, Fractions, Decimals, Word Problems36
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Social Second Unit (Italy, Urbanization, Oligarchies)15
