Question

Which of these instruments is BEST used for observing a single-celled organism? A) hand lens B) watch glass C) light microscope D) electron microscope

Answer 1

I think your best choice would be D. electron microscope. Hope this helps! ^_^

Answer 2

The right answer is D) electron microscope.

If we look for the best in the direction of the performance it is the electron microscope.

Both microscopes have their advantages, but electron microscopy is more efficient then the one that is used most routinely is optical microscopy for its accessibility.

- Optical (photonic) microscopes allow the observation of dead or living cells. The most common microscope uses visible light. It is less expensive to exploit, and allows viewing a whole microorganism.

- Electron microscopes use beams of electrons that move along a wave (like light). When the electron flow is accelerated, the wavelength decreases and the resolution increases. There are two types: The scanning electron microscope (SEM) and the transmission electron microscope (TEM). It is more expensive but allows to see all the details of the cell.