Condensation, hydrolysis and glycosidic bonds

Condensation, hydrolysis and glycosidic bonds Quiz

Spec 1.4 · Edexcel International A Level Biology: Quiz

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  1. 1. Which of these is a disaccharide made of glucose and fructose?

    • A. Maltose
    • B. Lactose
    • C. Sucrose
    • D. Glycogen
  2. 2. What is removed in a condensation reaction between two monosaccharides?

    • A. A water molecule
    • B. A carbon dioxide molecule
    • C. A hydrogen ion only
    • D. An oxygen atom only
  3. 3. How many glycosidic bonds are there in an unbranched chain of 20 glucose units?

    • A. 18
    • B. 20
    • C. 21
    • D. 19
  4. 4. Which statement about hydrolysis is correct?

    • A. It forms glycosidic bonds
    • B. It releases water
    • C. It adds a water molecule to break a glycosidic bond
    • D. It joins two monosaccharides
  5. 5. Why is storing glucose as glycogen better than storing free glucose?

    • A. It has a large effect on water potential
    • B. One large molecule replaces many glucose molecules, so there is little osmotic effect
    • C. It is soluble and moves out of the cell
    • D. It cannot be hydrolysed

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