Question

platelets and red blood cells are components of the blood. a typical platelet and red blood cell have diameters of approximately ( 2.33\times10^{-6} ) m and 0.0000075 m, respectively. which blood component has a bigger diameter, and approximately by how much? (1 point)
a platelet has a bigger diameter than a red blood cell by ( 9.83\times10^{-6} ) m.
a red blood cell has a bigger diameter than a platelet by ( 9.83\times10^{-6} ) m.
a red blood cell has a bigger diameter than a platelet by ( 5.17\times10^{-6} ) m.
a platelet has a bigger diameter than a red blood cell by ( 5.17\times10^{-6} ) m.

Explanation:

Step1: Convert \(0.0000075\) to scientific notation

\(0.0000075 = 7.5\times10^{-6}\)

Step2: Compare the two diameters

Since \(7.5\times 10^{-6}>2.33\times 10^{-6}\) (because \(7.5 > 2.33\) when the exponents are the same (\(-6\))).

Step3: Calculate the difference

\(7.5\times 10^{-6}-2.33\times 10^{-6}=(7.5 - 2.33)\times10^{-6}=5.17\times 10^{-6}\)

Answer:

A red blood cell has a bigger diameter than a platelet by \(5.17\times 10^{-6}\) m.