Question:
Match List-I with List-II
List-I (Protein) & List-II (Feature)
(A). $\alpha$-Keratin & (II). Rich in Cysteine residues
(B). Collagen & (III). Rich in Glycine, Proline and Hydroxyproline
(C). Myoglobin & (I). Contains predominantly $\alpha$-helices in its secondary structure
(D). Concanavalin A & (IV). Contains $\beta$-pleated sheets in high abundance
Choose the correct answer from the options given below:
Match List-I with List-II
List-I (Protein) & List-II (Feature)
(A). $\alpha$-Keratin & (II). Rich in Cysteine residues
(B). Collagen & (III). Rich in Glycine, Proline and Hydroxyproline
(C). Myoglobin & (I). Contains predominantly $\alpha$-helices in its secondary structure
(D). Concanavalin A & (IV). Contains $\beta$-pleated sheets in high abundance
Choose the correct answer from the options given below:
List-I (Protein) & List-II (Feature)
(A). $\alpha$-Keratin & (II). Rich in Cysteine residues
(B). Collagen & (III). Rich in Glycine, Proline and Hydroxyproline
(C). Myoglobin & (I). Contains predominantly $\alpha$-helices in its secondary structure
(D). Concanavalin A & (IV). Contains $\beta$-pleated sheets in high abundance
Choose the correct answer from the options given below:
Show Hint
Remember that collagen has a unique triple-helix structure that relies on glycine (the smallest amino acid) occupying every third position to fit inside the helix core.
Updated On: Jul 13, 2026
- (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
- (A)-(II), (B)-(III), (C)-(I), (D)-(IV)
- (A)-(III), (B)-(II), (C)-(IV), (D)-(I)
- (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Proteins are classified into fibrous and globular types. They exhibit unique structural features, amino acid compositions, and secondary structures that define their biological functions.
Step 2: Detailed Explanation:
Let us match the structural proteins with their corresponding features:
- (A) $\alpha$-Keratin $\rightarrow$ (II) Rich in Cysteine residues: $\alpha$-Keratin, found in hair, nails, and wool, contains high amounts of cysteine residues. These form disulfide cross-links that provide mechanical strength and rigidity.
- (B) Collagen $\rightarrow$ (III) Rich in Glycine, Proline and Hydroxyproline: Collagen is a fibrous structural protein characterized by a repeating Gly-X-Y triplet motif, forming a stable triple-helix.
- (C) Myoglobin $\rightarrow$ (I) Contains predominantly $\alpha$-helices in its secondary structure: Myoglobin is a globular oxygen-binding protein made up of eight distinct $\alpha$-helices, with no $\beta$-sheet structures.
- (D) Concanavalin A $\rightarrow$ (IV) Contains $\beta$-pleated sheets in high abundance: This plant lectin is a globular protein that consists primarily of antiparallel $\beta$-sheets.
This corresponds to Option (B).
Step 3: Final Answer:
The matching matches Option (B).
Proteins are classified into fibrous and globular types. They exhibit unique structural features, amino acid compositions, and secondary structures that define their biological functions.
Step 2: Detailed Explanation:
Let us match the structural proteins with their corresponding features:
- (A) $\alpha$-Keratin $\rightarrow$ (II) Rich in Cysteine residues: $\alpha$-Keratin, found in hair, nails, and wool, contains high amounts of cysteine residues. These form disulfide cross-links that provide mechanical strength and rigidity.
- (B) Collagen $\rightarrow$ (III) Rich in Glycine, Proline and Hydroxyproline: Collagen is a fibrous structural protein characterized by a repeating Gly-X-Y triplet motif, forming a stable triple-helix.
- (C) Myoglobin $\rightarrow$ (I) Contains predominantly $\alpha$-helices in its secondary structure: Myoglobin is a globular oxygen-binding protein made up of eight distinct $\alpha$-helices, with no $\beta$-sheet structures.
- (D) Concanavalin A $\rightarrow$ (IV) Contains $\beta$-pleated sheets in high abundance: This plant lectin is a globular protein that consists primarily of antiparallel $\beta$-sheets.
This corresponds to Option (B).
Step 3: Final Answer:
The matching matches Option (B).
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