Question

1. which of the following is generally the smallest?

protozoa
fungi
bacteria
viruses

Explanation:

Viruses are acellular entities. They are much smaller than protozoa (which are single - celled eukaryotes), fungi (which can be single - celled like yeast or multicellular), and bacteria (which are single - celled prokaryotes). Viruses typically range from about 20 - 300 nanometers in size. Bacteria range from about 0.5 - 5 micrometers. Protozoa can range from a few micrometers to several millimeters in some cases. Fungi can have a wide range of sizes, but even single - celled fungi (yeast) are generally larger than viruses.

Answer:

viruses