Question

About 1,500,000 bacteria are found in 1 milliliter of water of coastal ocean. How many bacteria will be there in 100 milliliters of water? A. 1. 5 × 104 B. 1. 5 × 105 C. 1. 5 × 106 D. 1. 5 × 107 E. 1. 5 × 108.

Answer 1

A single-celled prokaryotic organism that is generally free-living and of few micrometers in length is bacteria. They are very small in size that cannot be seen without a microscope.

$1. 5 \times 10^{8}$ bacteria will be present in 100 milliliters of water.

How to calculate the number of bacteria?

Given,

• 1 milliliter = 1,500,000 bacteria
• 100 milliliter = ?

$\begin{aligned}\rm Bacteria &=\dfrac{ 100 \rm milliliter \times 1,500,000} { 1 \;\rm milliliter} \\\\&= 1,50,000,000 \;\rm bacteria \\\\&= 1.5 \times 10 ^{8} \;\rm bacteria\end{aligned}$

Therefore, option E is correct.

Learn more about bacteria here:

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