MDCAT Biology MCQ #758

A diagram of the plant cell wall shows long, unbranched chains of glucose. These chains are held together by which specific linkage?

MDCAT Biology MCQ #758

  1. Question 1

    Q1. A diagram of the plant cell wall shows long, unbranched chains of glucose. These chains are held together by which specific linkage?

    • A) Beta 1-4 glycosidic linkages
    • B) Alpha 1-4 glycosidic linkages
    • C) Alpha 1-6 glycosidic linkages
    • D) Beta 1-6 glycosidic linkages

    Answer: Beta 1-4 glycosidic linkages

    Explanation: Cellulose uses Beta 1-4 linkages which humans cannot digest. Alpha 1-4 is tempting as it is the linkage found in digestible starch.