Question

A bacterial cell suspension contains $2 x 10^5 $ 𝑐𝑒𝑙𝑙𝑠 𝑚𝐿^{−1}. The volume of this suspension required to obtain $1.4 x 10^6$ 𝑐𝑒𝑙𝑙𝑠 is ________ 𝑚𝐿 (rounded off to the nearest integer).

Answer 1

Correct Answer: 7

The required volume is calculated using the formula:

\( \text{Volume} = \frac{\text{Total cells required}}{\text{Cell concentration per mL}}. \)

Substitute \(1.4 \times 10^6\) cells and \(2 \times 10^5\) cells/mL:

\( \text{Volume} = \frac{1.4 \times 10^6}{2 \times 10^5} = 7 \text{ mL}. \)