MDCAT Biology MCQ #933

A student adds iodine solution to a starch fraction and observes a red color instead of the typical blue. This specific fraction is:

MDCAT Biology MCQ #933

  1. Question 1

    Q1. A student adds iodine solution to a starch fraction and observes a red color instead of the typical blue. This specific fraction is:

    • A) Cellulose
    • B) Glycogen
    • C) Amylose
    • D) Amylopectin

    Answer: Amylopectin

    Explanation: Amylose is unbranched and gives a blue color with iodine, while amylopectin is branched and gives a red or purple color.