Madrid PAU Biology Practice Questions - Madrid PAU Biology Examination - UCM & Public Universities (Biología 2o Bachillerato 2026) Exam

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Which of the following disaccharides is a non-reducing sugar because both of its anomeric carbons are involved in the glycosidic bond?

Sucrose (α-D-glucopyranosyl-(1→2)-β-D-fructofuranoside) Maltose (α-D-glucopyranosyl-(1→4)-D-glucopyranose) Lactose (β-D-galactopyranosyl-(1→4)-D-glucopyranose) Cellobiose (β-D-glucopyranosyl-(1→4)-D-glucopyranose)

Correct Answer:

Sucrose (α-D-glucopyranosyl-(1→2)-β-D-fructofuranoside)

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