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Biomolecules question

2021 · 26 Feb · Shift 2 · Q15
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  5. /2021 · 26 Feb · Shift 2 · Q15

Biomolecules question

2021 · 26 Feb · Shift 2 · Q15

JEE MainChemistryBiomoleculesMCQ+4 / −1
Match List - I with List - II.

List - I List - II
(a) Sucrose (i) β\betaβ-D-Galactose and β\betaβ-D-Glucose
(b) Lactose (ii) α\alphaα-D-Glucose and β\betaβ-D-Fructose
(c) Maltose (iii) α\alphaα-D-Glucose and α\alphaα-D-Glucose

Choose the correct answer from the options given below :
  1. A
    (a) →\to→ (iii), (b) →\to→ (ii), (c) →\to→ (i)
  2. B
    (a) →\to→ (i), (b) →\to→ (iii), (c) →\to→ (ii)
  3. C
    (a) →\to→ (ii), (b) →\to→ (i), (c) →\to→ (iii)
  4. D
    (a) →\to→ (iii), (b) →\to→ (i), (c) →\to→ (ii)
View written solutionFree

Correct answer: C

  1. We identify the constituent monosaccharides of each disaccharide.

  2. Sucrose:

    • Sucrose is made of α\alphaα-D-Glucose and β\betaβ-D-Fructose.
    • So, Sucrose→(ii)\text{Sucrose} \to (ii)Sucrose→(ii)

  3. Lactose:

    • Lactose is made of β\betaβ-D-Galactose and β\betaβ-D-Glucose.
    • So, Lactose→(i)\text{Lactose} \to (i)Lactose→(i)

  4. Maltose:

    • Maltose is made of α\alphaα-D-Glucose and α\alphaα-D-Glucose.
    • So, Maltose→(iii)\text{Maltose} \to (iii)Maltose→(iii)

  5. Therefore the correct matching is: (a)→(ii),(b)→(i),(c)→(iii)(a) \to (ii), \quad (b) \to (i), \quad (c) \to (iii)(a)→(ii),(b)→(i),(c)→(iii)

  6. Now compare with the options:

    • Option C matches this exactly.

Hence, the correct answer is C.

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