What is the smallest to the biggest from virus human animal cell bacterica cell?

In terms of size from smallest to largest, the order is viruses, bacteria, animal cells, and human cells. Viruses are the tiniest, typically measuring around 20 to 300 nanometers. Bacteria are larger, ranging from about 0.5 to 5 micrometers. Animal and human cells are generally larger still, typically between 10 to 30 micrometers in diameter.