Biophysics and Molecular Biology: Tools and Techniques by Pearson

Answers

1. c

2. a

3. a

4. b

At pH 1, the average charges on both amino acids is positive, all migrate towards the cathode, although Lys migrates more rapidly than Glu. At pH 12, the average charge on two amino acids is negative, and thus all migrate toward the anode. In this case, however, Glu migrates more rapidly than Lys.

5. c

6. a

7. c

8. c

9. d

10. c

11. d

12. b

13. d

Besides showing the number of different kinds of protons, the ¹H–NMR spectrum also tells how many protons of each kind are present in a molecule. This is shown by the intensity of the signal. The intensity of a signal is measured in terms of the area under that peak. The ...