Question

In the DNA of E.coli, the mole ratio of adenine to cytosine is 0.7. If the number of moles of adenine in the DNA is 350000, the number of moles of guanine is equal to:

350000

500000

225000

700000

Answer 1

$\frac{ mol of adenine}{mole of cytosine} = 0.7$

$\frac{35000}{mole of cytosine} = 0.7$

mole of cytosine ( guanine ) = 500000