MDCAT Biology MCQ #709

A three-carbon sugar is isolated from a cell and found to contain a terminal aldehyde group. Contrast this with its isomer, dihydroxyacetone.

MDCAT Biology MCQ #709

  1. Question 1

    Q1. A three-carbon sugar is isolated from a cell and found to contain a terminal aldehyde group. Contrast this with its isomer, dihydroxyacetone.

    • A) Dihydroxyacetone
    • B) Glyceraldehyde
    • C) Ribulose
    • D) Galactose

    Answer: Glyceraldehyde

    Explanation: Glyceraldehyde is an aldose with a terminal carbonyl group, whereas Dihydroxyacetone is its ketose isomer with a central carbonyl group.