Biology 9700 · AS & A Level · Mode of action of enzymes

Mode of action of enzymes — practice question

A tropical grass has been discovered to contain an unusual enzyme. It speeds up the hydrolysis of the fungal polysaccharide chitin into amino sugars. It also reduces the activity of an enzyme in locust guts that catalyses the digestion of amylose. Which description best fits the actions of this unusual enzyme?

  • Areaction catalysed: hydrolysis of glycosidic bonds; reaction inhibited: condensation of glycosidic bonds
  • Breaction catalysed: hydrolysis of glycosidic bonds; reaction inhibited: hydrolysis of glycosidic bonds
  • Creaction catalysed: hydrolysis of peptide bonds; reaction inhibited: condensation of glycosidic bonds
  • Dreaction catalysed: hydrolysis of peptide bonds; reaction inhibited: hydrolysis of glycosidic bonds

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