SATHEE: Exemplar Problems

Biology Problems

Exemplar Problems

Question:

Explain the role of lactose in nutrition and identify its source.

Answer:

Lactose is a disaccharide composed of one glucose molecule and one galactose molecule linked by a β-1,4-glycosidic bond. It serves an important role in nutrition, particularly in infants.

Role in Nutrition: Lactose is a source of energy for infants. It is found in breast milk and in the milk of mammals. The enzyme lactase is required to break down lactose into its constituent monosaccharides (glucose and galactose) for absorption in the small intestine. This enzymatic digestion provides a readily available source of energy for infants during early development.
Source: Lactose is primarily found in milk and dairy products, making it a significant component of the human diet during infancy when milk is the primary source of nutrition. However, lactose intolerance, which occurs when individuals lack sufficient lactase enzyme, can lead to difficulty digesting lactose-containing foods in adulthood.

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Biology Problems

Exemplar Problems

Question:

Answer:

Table of Contents

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Mentorship

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