The concentration of a biomolecule inside a rod-shaped prokaryotic cell is 0.0027 m. calculate the number of molecules inside the cell, which is 4.4 μm long and 1.2 μm in diameter.

Answer : The number of molecules inside the cell is,

Solution :

First we have to calculate the volume of biomolecule cell.

Volume = Area of the base of the cell × length of the cell

where,

V = volume of the biomolecule cell

r = radius of the cell =

h = length of the cell =

Now put all the given values in the above volume formula, we get

conversion :

Now we have to calculate the moles of a biomolecule of the cell.

Now we have to calculate the number of molecules inside the cell.

Therefore, the number of molecules inside the cell is,

according to kinetic-molecular theory, the following would not be considered an ideal gas:

a gas at very low volumes, when gas particles are very close together

a gas at very low temperatures, when gas particles have very little kinetic energy a gas

a gas with highly polar molecules that have very strong intermolecular forces

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