If the cell has a cell wall, it is a plant cell.
An Electron Microscope is used to study the contents of a nucleus.
I would probably say a very strong microscope
It depends on the type of biofilm, what surface the biofilm is on, and what information you want to get by looking at the biofilm under a microscope. If you just want to look at how much of a surface is covered by a biofilm, you can use normal light trasmission microscopy (as long as the surface is transparent e.g. glass). Alternatively you could use epifluorescent microscopy in combination with a fluorescent stain. If you want to look at the structure of the biofilm, confocal laser scanning microscopy is probably the best as you can get a 3D image. Other useful types of microscopy include phase contrast and DIC, which allow you to look at the biofilm without staining it first.
Vacuoles in animal cells do not have a specific color. They are usually clear or colorless structures that can store various substances such as water, nutrients, or waste products.
An electron microscope can only operate inside a vacuum chamber. A good vacuum, needed so that electrons do not collide with air molecules or dirt before reaching the sample and the detector coming back, would be 1e-7 Torr or below. Your sample (the object of interest) has to be small enough to be mounted on a pedestal, which is inserted into chamber where the electron beam will be. The pedestal has to have multiple degrees of freedom so the e-beam can interrogate at various angle and position. The last requirement would be that your sample does not charge up too easily, which will distort the image. Charging can be lessened with a flash of gold. Hence, if your sample meets the requirements listed, you should be able to see its image on a monitor just as clearly as you see an object of a much larger scale, with an optical microscope. Any items that are detrimental to a vacuum formation (moist, spongy materials, for example) should probably be avoided. From an electron microscope, I have seen something as big as the compound eyes of a fly or a feature as small as 1 nm.
An Electron Microscope is used to study the contents of a nucleus.
Probably an electron microscope.
You're probably thinking of the scanning electron microscope. But it could be anything. Your question is not specific enough.
Probably a microscope would be the best to magnify something 20 times. add simple lenses and couplets have fairly serious limitations beyond 8 - 10 times.
cells are so small we cannot see color with a microscope or electron microscope. People do die them. It is probably clear because it is fluid.
Electron scanning would probably be best.
An electron microscope would be needed to see detailed images of an internal structure of a bacterium, as it can provide much higher magnification and resolution compared to a light microscope. The electron microscope uses a beam of electrons instead of light to visualize the specimen, allowing for better visualization of internal structures at the cellular level.
High powered, high resolution microscopes.
Probably surgical tools like scapels and tweezers.
I would probably say a very strong microscope
Electron discovered by einstein probably that how fool
The scanning electron microscope is probably the answer you are looking for, in which a beam of electrons is bounced from the surface of the specimen - usually prepared with an incredibly thin film of metal over its surface to make the electrons bounce from the surface better and not penetrate the specimen too far - and the electrons imaged