Enzyme X fully hydrolyzes α-linked polysaccharides like glycogen and amylose

Steps:

• Amylose consists of glucose units linked by α-1,4 glycosidic bonds.
• Glycogen consists of glucose units linked by α-1,4 and α-1,6 glycosidic bonds.
• Enzyme X breaks all α-glycosidic bonds, including both types.
• Thus, it achieves complete hydrolysis of both molecules.

Why A is correct:

• Both polysaccharides contain only α-glycosidic bonds, allowing full breakdown as indicated by ++ (complete hydrolysis for glycogen and amylose).

Why the others are wrong:

• B: Falsely claims no hydrolysis of amylose, which has only α-bonds.
• C: Falsely claims only some hydrolysis of amylose, ignoring full α-bond cleavage.
• D: Reverses the polysaccharides, claiming no hydrolysis of glycogen despite its α-bonds.

Final answer: A