Question

Which of the following is not correct about the NMR?

(a) It stands for Nuclear Magnetic Resonance

(b) NMR spectroscopy detects spinning patterns of atomic nuclei in a electric field

(c) NMR spectroscopy detects spinning patterns of atomic nuclei in a magnetic field

(d) Protein samples are labeled with radioisotopes such as 13C and 15N

This question was posed to me in examination.

This question is from Protein Structure Basics in chapter Structural Bioinformatics of Bioinformatics

Answer 1

Correct answer is (b) NMR spectroscopy detects spinning patterns of atomic nuclei in a electric field

Easiest explanation: Radiofrequency radiation is used to induce transitions between nuclear spin states in a magnetic field. Interactions between spinning isotope pairs produce radio signal peaks that correlate with the distances between them. By interpreting the signals observed using NMR, proximity between atoms can be determined.