NEETBotanyBiomolecules (B)
Type of Protein Structure Characteristic A. Alpha-helix 1. Coiled structure stabilized by hydrogen bonds B. Beta-sheet 2. Parallel or antiparallel strands linked by hydrogen bonds C. Tertiary structure 3. 3D folding of a single polypeptide D. Quaternary structure 4. Assembly of multiple polypeptides into a functional unit
Options
- AA - 4, B - 2, C - 3, D - 1
- BA - 2, B - 1, C - 4, D - 3
- CA - 1, B - 3, C - 2, D - 4
- DA - 3, B - 4, C - 1, D - 2
Correct answer
C. A - 1, B - 3, C - 2, D - 4
Step-by-step solution
Alpha-helix (D) is a coiled structure stabilized by hydrogen bonds (I). Beta-sheet (B) consists of parallel or antiparallel strands linked by hydrogen bonds (II). Tertiary structure (C) refers to the 3D folding of a single polypeptide (III). Quaternary structure (A) is the assembly of multiple polypeptides into a functional unit (IV).