MDCAT Biology MCQ #712

A pentose sugar is extracted from a viral genome. Chemical analysis shows a hydrogen atom instead of a hydroxyl group at carbon 2.

MDCAT Biology MCQ #712

  1. Question 1

    Q1. A pentose sugar is extracted from a viral genome. Chemical analysis shows a hydrogen atom instead of a hydroxyl group at carbon 2.

    • A) Deoxyribose
    • B) Ribose
    • C) Ribulose
    • D) Glucose

    Answer: Deoxyribose

    Explanation: Deoxyribose lacks an oxygen at carbon 2, whereas ribose has a hydroxyl group at that position, distinguishing DNA from RNA sugars.