Red Blood Cells - RBCs

1. There are _____________ complete RBCs in the picture. (Yes, count them - but only the WHOLE ones!)
    
2. The units represented in the scale on the picture are micrometers (0.000001 meter). The RBC marked with an arrow in the picture is _____________ micrometers in diameter.
    
3. The RBC marked with an arrow in the picture is _____________ millimeters (0.001 meter) in diameter.
    
4. The SI prefix "nano" represents 10^-9 meter. The RBC marked with an arrow in the picture is _____________ nanometers in diameter.
    
5. Assume that the cell marked with an arrow is an "average" RBC. If all the complete RBCs in the picture were placed end to end, the line of RBCs would be ___________ centimeters (0.01 meter) long.