Question

A human red blood cell has, on average, a diameter of 7.4×10^0

microns (1 micron = 1 µm). What is this in nanometers?
a) 7.4 nm
b) 74 nm
c) 740 nm
d) 7400 nm

Answer 1

A human red blood cell with a diameter of 7.4 microns is equivalent to 7400 nanometers, which is option (d).

Step-by-step explanation:

To convert the diameter of a human red blood cell from microns to nanometers, we can use the fact that 1 micron is equivalent to 1000 nanometers. Given the diameter of a red blood cell is 7.4×100 microns, we simply need to multiply by 1000 to change the unit of measurement to nanometers.

7.4 microns × 1000 = 7400 nanometers.

Therefore, the diameter of a human red blood cell in nanometers is 7400 nm, which corresponds to option (d) 7400 nm.