How big are viruses?

A. Big enough to be seen by the naked eye but smaller than a human egg cell.
B. Too small to be seen without the aid of an electron microscope.
C. Too small to be seen without the aid of a light microscope.
D. Big enough to be seen when cultured like bacteria.

Question

How big are viruses? 

	A.	Big enough to be seen by the naked eye but smaller than a human egg cell.
	B.	Too small to be seen without the aid of an electron microscope.
	C.	Too small to be seen without the aid of a light microscope.
	D.	Big enough to be seen when cultured like bacteria.

blues · Answer

Again, process of elimination works well. Obviously A is not the correct answer - no one has ever seen a virus without aid of a microscope of some sort.

The question is about scale. Big stuff you can see with your eyes. Light microscopes are provide the next step in magnification; electron microscopes provide even more magnification. So because viruses are much, much smaller than bacteria...