Answer: Humans lack beta-glucosidase enzyme to break beta-1,4 glycosidic bonds.
- A Humans lack beta-glucosidase enzyme to break beta-1,4 glycosidic bonds
- B Cellulose is toxic to the human digestive lining
- C Cellulose is completely insoluble in any aqueous or organic solvent
- D Cellulose contains no carbon-hydrogen bonds capable of providing energy
Correct answer: A. Humans lack beta-glucosidase enzyme to break beta-1,4 glycosidic bonds
Explanation: Humans lack cellulase (beta-1,4-glucanase); ruminants have microbes that produce it to digest cellulose.
Addition polymerisation simply links monomers containing a double bond with nothing left over, while condensation polymerisation joins two different monomers through a reaction (often forming an ester or amide bond) that releases a small molecule like water at each step.
Concept context
Large molecules made of repeating monomer units. Covers addition and condensation polymerisation, natural and synthetic polymers (nylon, PVC, Bakelite, natural rubber), and their real-world industrial applications.