MDCAT Biology MCQ #865

When comparing the ribose sugar in RNA to the deoxyribose in DNA, which specific change occurs at the carbon-2 position during the transition to deoxyribose?

MDCAT Biology MCQ #865

  1. Question 1

    Q1. When comparing the ribose sugar in RNA to the deoxyribose in DNA, which specific change occurs at the carbon-2 position during the transition to deoxyribose?

    • A) Addition of oxygen
    • B) Removal of oxygen
    • C) Removal of hydrogen
    • D) Addition of methyl group

    Answer: Removal of oxygen

    Explanation: Deoxyribose lacks the oxygen atom at the C-2 position found in ribose. Adding oxygen would make it ribose, not deoxyribose.