The microscope that is used to see internal structures of cells in a natural state is the compound light microscope. The microscope has a lens and light that allows it to see the internal structures of a cell clearly.
Phase Contrast Microscope
phase contrast
The answer your lab manual is looking for is bacteria.
That is the oil lens. For suspension of microbes in an oil solution in which the objective lens is also immersed. Improves resolution.
Microbes (microorganisms) were discovered by Anton van Leeuwenhoek in 1675. He invented and used his own microscope to identify them. Theories of their existence had been offered throughout civilized history before that by men of science and medicine, such as Roman scientist, Marcus Terentius Varro in the 1st century BC. But, until van Leeuwenhoek designed and used his microscope, no observable proof had been available.
Microbes are microscopic organisms that cannot be seen by the naked eye, only by using a microscope. Other names for microbes are microorganisms and, when related to infection or diseases, "germs" and "bugs".The simplest definition of a microbe is a living thing, or ORGANISM, too tiny to be seen without the aid of a microscope. Most-but not all- are single cell (e.g. fungi are not single cell). Some, such as viruses are even "submicroscopic" requiring special electron microscopes to see them. Microbes fall into seven groups: bacteria, archaea, fungi, protists, microscopic animals, microscopic plants, and viruses. Although not all scientists agree that viruses should be included in the grouping, others do, for ease of discussion, even though they do not strictly meet the definition of microbes because they are not living. Viruses are organisms with specific behaviors and functions and the ability to reproduce or replicate, but they are particles rather than living microscopic organisms.(See related question for more information on the types of microbes.)
Phase-contrast microscopy is the observation of internal structures of living microbes where as bright field microscopy is the observation of killed stained specimens and naturally colored live ones.
Light microscope
aids
microbes are stained so they can be visualised under a light microscope.
The compound microscope is a light microscope that uses light to "see" microbes. Viruses are too small.The electron microscope uses electrons to "see" microbes or viruses.
microbes
To look at cells and microbes, virus's and bacteria.
They are both. Microbes are just small living things which we need a microscope to see.
it magnify the microbes up to 10000 times
Microscope
Pretty self explanatory. Because they are too small to see with the naked eye. Also, microbes are generally see thru and have to be stained to see them easier under a microscope.
a unicellular microbe is a microorganism which can only be seen with a microscope
That is not for every micro organism.For some microbes,high resolution power is needed.