A-LevelBiologyEnzymes9700/12 · Oct/Nov 2021 · Q101 Mark
Complete hydrolysis of polysaccharides requires all the glycosidic bonds between the monomers to be broken. Enzyme X only breaks α-1,4 glycosidic bonds. Which row shows how completely enzyme X can hydrolyse molecules of glycogen and amylose? [Table showing hydrolysis of glycogen and amylose with a key for ++, +, -]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Aglycogen: +, amylose: ++
Bglycogen: ++, amylose: +
Cglycogen: ++, amylose: -
Dglycogen: -, amylose: ++
✓ Correct answer
A: glycogen: +, amylose: ++
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