The sizes of several biological structures are indicated in the figure below.
Which of the following is the smallest structure you could see with a light microscope?
A)viruses
B)frog egg
C)most bacteria
D)ribosomes

Question

The sizes of several biological structures are indicated in the figure below. 
Which of the following is the smallest structure you could see with a light microscope?
A)viruses 
B)frog egg 
C)most bacteria 
D)ribosomes

Quizplus · Accepted Answer

The smallest structure visible with a light microscope is most bacteria, with a length of about 0.5 to 5 micrometers. Viruses and ribosomes are much smaller and cannot be seen with a light microscope, while frog eggs are much larger than bacteria.

The Sizes of Several Biological Structures Are Indicated in the Figure