Question

How many cells of staphylococci will be able to fit in the volume of a human red blood cell?

Answer 1

The average volume of red blood cell in a specimen is 80 - 96 Femtolitres for an adult.

If we take an average of this we will get 88 femtolitres which is equivalent to

8.8 × 10⁻¹¹ cm³

The volume of a staphylococci is approximately :

5.24 × 10⁻¹³ cm³

Dividing the two volumes we have :

(8.8 × 10⁻¹¹) / (5.24 × 10⁻¹³) = 1.679 × 10³

Ignoring the decimal part, we get 1000 Cells.

Answer 2

Approximately about 1000 staphylococci cells can easily fit inside the volume of a 'human red blood cell'.

Explanation:

Average volume of a red blood cell is 80-90 femtolitres per red blood cell.

Considering 8.8 femtolitres as the volume of a RBC

I.e. volume of 1 RBC $=8.8 \times 10^{-11} \mathrm{cm}^{3}$

Volume of 1 staphylococci cell $\bold{=5.24 \times 10^{-13} \mathrm{cm}^{3}}$

Number of staphylococci cell in one RBC $=\frac{8.8 \times 10^{-11}}{5.24 \times 10^{-13}}$

   $=1.67938 \times 1000$

Now, ignore the decimal parts.

So, there are approximately 1000 staphylococci cells in 1 RBC.