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 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 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 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 platelet has a bigger diameter than a red blood cell by 5.17×10−6

Answer 1

To compare the diameters of a platelet and a red blood cell, we can use the provided values:

• Diameter of a platelet: \(2.33 \times 10^{-6}\) m
• Diameter of a red blood cell: \(0.0000075\) m, which can also be expressed as \(7.5 \times 10^{-6}\) m.

Now, we will compare these two values:

1. Convert the diameter of the red blood cell to scientific notation: \(0.0000075\) m = \(7.5 \times 10^{-6}\) m.

2. Now let's find the difference in diameter between a red blood cell and a platelet: \[ 7.5 \times 10^{-6} \text{ m (red blood cell)} - 2.33 \times 10^{-6} \text{ m (platelet)} = (7.5 - 2.33) \times 10^{-6} \text{ m} = 5.17 \times 10^{-6} \text{ m}. \]

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.