The Protein Data Bank, PDB, Is an International Database of 3D

Multiple Choice

The Protein Data Bank, PDB, is an international database of 3D molecular structures of biomolecules obtained by using _______________.
I. x-ray crystallography
II. light microscopy
III. scanning calorimetry
IV. NMR
V. electron microscopy

A) I, II, and III
B) I, III, and V
C) III, IV and V
D) II, III, and V
E) I, IV and V