Galactose is produced from the digestion of which common dairy sugar?

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Study for the HOSA Foundations of Nutrition Test. Enhance your knowledge with flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

Multiple Choice

Galactose is produced from the digestion of which common dairy sugar?

Explanation:
Galactose comes from lactose, the sugar found in milk, because lactose is made of galactose linked to glucose. When you digest lactose, the enzyme lactase in the small intestine breaks that bond, releasing free galactose and free glucose. That’s why galactose is produced from dairy sugar. Other common sugars don’t contain galactose in their structure: sucrose is glucose plus fructose, and glucose or fructose alone don’t yield galactose during digestion.

Galactose comes from lactose, the sugar found in milk, because lactose is made of galactose linked to glucose. When you digest lactose, the enzyme lactase in the small intestine breaks that bond, releasing free galactose and free glucose. That’s why galactose is produced from dairy sugar. Other common sugars don’t contain galactose in their structure: sucrose is glucose plus fructose, and glucose or fructose alone don’t yield galactose during digestion.

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