Platelets and red blood cells are components of the blood. A typical Platelet and red blood cell have diameters of approximately 2.33 × 10^-⁶ m and 0.0000075 m, respectively. Which blood component has a bigger diameter, and approximately by how much?

Question

A. A red blood cell has a bigger diameter than a Platelets by 9.83 × 10^-⁶ m.
B. A Platelet had a bigger diameter than a red blood cell by 5.17 × 10^-⁶ m
C. A platelets has a bigger diameter than a red blood cell by 9.83 × 10^-⁶ m.
D. A red blood cell has a bigger diameter than a platelet by 5.17 × 10^-⁶ m.

Answer 1

The red blood cell has a diameter of 0.0000075 m, which can be written in scientific notation as 7.5 × 10^-⁶ m.

Comparing the two diameters, we can see that the diameter of a platelet is smaller than the diameter of a red blood cell. Therefore, the correct answer is D. A red blood cell has a bigger diameter than a platelet by 5.17 × 10^-⁶ m.