Biomolecules

The -Helix and - Pleated sheet structures of protein are associated with its :

1. tertiary structure
2. quaternary structure
3. primary structure
4. secondary structure

Answer

(4) secondary structure

Solution

Primary = amino-acid sequence; secondary = C=O···H–N hydrogen-bonded folding ( -helix, -pleated sheet); tertiary = 3-D fold of one chain; quaternary = several chains

∴ secondary structure

Answer: (4)