In terms of size, how do viruses compare to bacteria?

Viruses are indeed smaller than bacteria, which makes the chosen response accurate. To provide some context, bacteria are single-celled organisms that can vary significantly in size but typically range from about 0.2 to 5 micrometers in length. In contrast, viruses are much smaller, usually measuring between 20 to 300 nanometers. This size difference is essential when considering their biological characteristics and how they interact with living organisms.

The distinction in size also underscores the different structural and functional characteristics of these microorganisms. Bacteria are more complex, possessing both genetic material and the necessary machinery to reproduce independently. Viruses, on the other hand, lack the cellular machinery to replicate on their own and must infect a host cell to reproduce.

Understanding this size comparison is vital for applications in microbiology, medicine, and hygiene, particularly in terms of treatment approaches and infection control practices.