Αlpha-helix has

Q. Αlpha-helix has

1. 3.6 residues/turn and is a right handed helix
2. 3.8 residues/turn and is a right handed helix
3. 3.6 residues/turn and is a left handed helix
4. 3.8 residues/turn and is a left handed helix

Answer: 3.6 residues/turn and is a right handed helix