The sizes of several biological structures are indicated in the following figure.

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 following figure.

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 bacteria, with a size ranging from 0.2 to 2 micrometers. Viruses, ribosomes, and other subcellular structures are much smaller than bacteria and require more powerful microscopes to be observed. The frog egg is much larger than all of these structures, measuring several millimeters in diameter.

The Sizes of Several Biological Structures Are Indicated in the Following