Question

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
2.33
×
10
−
6
m and 0.0000075 m, respectively. Which blood component has a bigger diameter, and approximately by how much?(1 point)
Responses

A red blood cell has a bigger diameter than a platelet by 9.83×10^−6
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 red blood cell has a bigger diameter than a platelet by 5.17×10^−6
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 platelet has a bigger diameter than a red blood cell by 9.83×10^−6
9.83
×
10
−
6
m.
A platelet has a bigger diameter than a red blood cell 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
5.17
×
10
−
6
m.
A plat

Answer 1

To compare the diameters of platelets and red blood cells, we first need to express them in a similar format:

- Diameter of a platelet: \( 2.33 \times 10^{-6} \, m \)
- Diameter of a red blood cell: \( 0.0000075 \, m = 7.5 \times 10^{-6} \, m \)

Now, let's compare the two:

1. The diameter of a red blood cell is \( 7.5 \times 10^{-6} \, m \).
2. The diameter of a platelet is \( 2.33 \times 10^{-6} \, m \).

Now, to find the difference in diameter:

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

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

The correct response is:

**A red blood cell has a bigger diameter than a platelet by 5.17×10^−6 m.**