The E. coli genome consists of base pairs:
Correct answer: A. 4,639,221
- A. 4,639,221
- B. 4,639,222
- C. 4,629,221
- D. 4,638,221
Explanation
The E. coli genome consists of exactly 4,639,221 base pairs. This number is significant because it provides the genetic blueprint for the organism, encoding genes responsible for at least 4,288 proteins. The other options are incorrect as they either add or subtract a small number of base pairs, which does not reflect the established scientific consensus.
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The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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