Question

A typical healthy blood cell has a diameter of about 0.000008 meters. A red blood cell with a diameter higher than this signals an illness. Which red blood cell is larger than the average size of a healthy blood cell?(1 point) Responses 8×10−6 8 times 10 superscript negative 6 baseline 8×10−7 8 times 10 superscript 7 baseline 8×10−5 8 times 10 superscript negative 5 baseline 8×10−9

Answer 1

To determine which of the given responses represents a diameter larger than the average healthy blood cell size of \(0.000008\) meters (which is equivalent to \(8 \times 10^{-6}\) meters), let’s compare each option:

1. \(8 \times 10^{-6}\) – This is equal to the average size of a healthy blood cell.
2. \(8 \times 10^{-7}\) – This is \(0.0000008\) meters, which is smaller than \(0.000008\) meters.
3. \(8 \times 10^{-5}\) – This is \(0.00008\) meters, which is larger than \(0.000008\) meters.
4. \(8 \times 10^{-9}\) – This is \(0.000000008\) meters, which is smaller than \(0.000008\) meters.

Therefore, the red blood cell that is larger than the average size of a healthy blood cell is:

\(8 \times 10^{-5}\) (8 times 10 superscript negative 5).