Condensation Reaction in Carbohydrates

Steps:

• Recall that condensation is a dehydration synthesis where two molecules join by removing water.
• In carbohydrates, this links monosaccharides to form larger units like disaccharides.
• Identify the process: two monosaccharides react, releasing H2O and forming a glycosidic bond.
• Match to options: production of disaccharide from monosaccharides fits the definition.

Why A is correct:

• Condensation forms disaccharides (e.g., maltose from glucose) by linking monosaccharides via glycosidic bonds, as per the reaction: C6H12O6 + C6H12O6 → C12H22O11 + H2O.

Why the others are wrong:

• B: Breaking glycosidic bonds occurs in hydrolysis, not condensation.
• C: Water is released, not used up, during condensation.
• D: Monosaccharides result from hydrolysis, the opposite of condensation.

Final answer: A