If it's a protist it will be pushing stuff around and moving.
An example of an organism that can only be seen with a microscope is a single-celled organism like bacteria or protists. These organisms are too small to be visible to the naked eye but can be observed under a microscope due to their size.
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Viruses were discovered recently because they are microscopic and cannot be seen under a regular microscope. The invention of the electron microscope in the 20th century allowed scientists to visualize and study viruses, leading to their discovery.
Using high power objective lense
Microscopes are used to see things smaller than what is capable of the naked eye
An example of an organism that can only be seen with a microscope is a single-celled organism like bacteria or protists. These organisms are too small to be visible to the naked eye but can be observed under a microscope due to their size.
Organisms vary in size from the microscope.
An organism is a living thing. It can be a micro-organism, which can only be seen under a microscope, a fungus, a plant or an animal.
chloroplast
Organisms vary in size from the microscope.
AIDS is the disease caused by the virus called HIV. It can not be seen under a light microscope (as one in the class lab) but you must use an electron microscope as they are very tiny.
he found cells of course
a blob
The trichomonas organism moves using a number of long flagella. It's movement is quite distinctive under the microscope.
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If you mean "Who first discovered cells" the answer would be Robert Hooke. He first discovered cells by looking at cork under a microscope.
cell wall and central vacuole