A Typical E

question 23

Multiple Choice

A typical E.coli bacterium is a cylindrical cell about 2 μm long and 1 μm in diameter,weighing about 1.8 × 10^-12 g and containing 80% water by volume.Calculate the number of lipid molecules present,assuming their average molecular weight is 688 g/mol and the lipid content is 1.9%.

• A)8.3 × 10¹⁰
• B)2.1 × 10¹⁰
• C)2.4 × 10⁷
• D)1.6 × 10⁹
• E)3.0 × 10⁷