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?(1 point)

Question

Responses

A red blood cell has a bigger diameter than a platelet by 5.17×10−6 m.
A red blood cell has a bigger diameter than a platelet by 5.17 times 10 superscript negative 6 baseline m.

A red blood cell has a bigger diameter than a platelet by 9.83×10−6 m.
A red blood cell has a bigger diameter than a platelet by 9.83 times 10 superscript negative 6 baseline m.

A platelet has a bigger diameter than a red blood cell by 5.17×10−6 m.
A platelet has a bigger diameter than a red blood cell by 5.17 times 10 superscript negative 6 baseline m.

A platelet has a bigger diameter than a red blood cell by 9.83×10−6 m.

Answer 1

To determine which blood component has a bigger diameter and by how much, we need to convert both diameters into the same notation and then compare them.

1. The diameter of a platelet is approximately \( 2.33 \times 10^{-6} \) m.
2. The diameter of a red blood cell is approximately \( 0.0000075 \) m, which can also be written as \( 7.5 \times 10^{-6} \) m.

Now we compare the two:

• Diameter of a red blood cell: \( 7.5 \times 10^{-6} \) m
• Diameter of a platelet: \( 2.33 \times 10^{-6} \) m

Now, we can calculate the difference:

\[ 7.5 \times 10^{-6} , \text{m} - 2.33 \times 10^{-6} , \text{m} = 5.17 \times 10^{-6} , \text{m} \]

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

So, the correct response is: A red blood cell has a bigger diameter than a platelet by \( 5.17 \times 10^{-6} \) m.