The concentration of a biomolecule inside a rod‑shaped prokaryotic cell is 0.0019 M. Calculate the number of molecules inside the cell, which is 3.5 μm
long and 1.1 μm in diameter.

Explanation:

The molar concentration is defined as the number of moles of a substance in one unit volume of a solution

Here

Molar concentration M

The dimensions of bacterial cell are as follows

Diameter μm

and length of the bacterial cell   μm

The volume of the solution is equal to product of area and the length

Thus, volume

Substituting the given values in above equation, we get -

μm^3

Number of molecules