Q16 / 180 · COMEDK 2025 (10 May Shift 3) · Chemistry
Identify the correct statement.
- AAmylose is a branched chain polymer of $\alpha-\mathrm{D}-(+)$ - glucose units
- Correct answerBLeucine and Tryptophan are classified as Essential amino acids
- CCurdling of milk is not a denaturation process
- DFructose is an example of Invert sugar
Solution
Amylose is a linear polymer of $\alpha$-D-(+)-glucose units linked by $\alpha$-1,4-glycosidic bonds, not a branched chain polymer. Therefore, the first statement is incorrect.
Leucine and Tryptophan are indeed classified as essential amino acids, as they cannot be synthesized by the human body and must be obtained through the diet. Therefore, the second statement is correct.
Curdling of milk involves the denaturation of casein protein due to the change in pH caused by lactic acid production, which alters the protein structure. Thus, it is a denaturation process, making the third statement incorrect.
Invert sugar is an equimolar mixture of glucose and fructose obtained by the hydrolysis of sucrose. Fructose itself is a monosaccharide and not an invert sugar. Therefore, the fourth statement is incorrect.
Answer: Leucine and Tryptophan are classified as Essential amino acids
Leucine and Tryptophan are indeed classified as essential amino acids, as they cannot be synthesized by the human body and must be obtained through the diet. Therefore, the second statement is correct.
Curdling of milk involves the denaturation of casein protein due to the change in pH caused by lactic acid production, which alters the protein structure. Thus, it is a denaturation process, making the third statement incorrect.
Invert sugar is an equimolar mixture of glucose and fructose obtained by the hydrolysis of sucrose. Fructose itself is a monosaccharide and not an invert sugar. Therefore, the fourth statement is incorrect.
Answer: Leucine and Tryptophan are classified as Essential amino acids
Hence, the correct answer is option: 'B'.