Final answer:
The diameter of an average human skin cell is about 30 micrometers, which is 30,000 nanometers. Since a PMV particle is roughly 45 to 50 nanometers, approximately 600 PMV particles can fit end-to-end across the diameter of the average human skin cell, making the answer Hundreds (A).
Step-by-step explanation:
When considering how many PMV (Polymavirus) particles would fit across the diameter of the average human skin cell, we look at the size scale of cells and viruses. A typical human skin cell's diameter is roughly 30 micrometers (μm), while a PMV particle is approximately 45 to 50 nanometers (nm) in size. By converting the skin cell diameter to nanometers (1 μm = 1,000 nm), we find that the diameter of an average skin cell is about 30,000 nm.
Now, to determine how many PMV particles would fit end-to-end across this diameter, we divide the cell's diameter in nanometers by the size of one PMV particle. This gives us 30,000 nm / 50 nm = 600 PMV particles end-to-end. Therefore, the correct answer is (A) Hundreds.