E-PolyLearning

231. Which of the following is the correct order of sequencing?
a. Cleaving, sequencing and ordering
b. Sequencing, ordering and cleaving
c. Ordering, cleaving and sequencing
d. Ordering, sequencing and cleaving
View Answer Report Discuss 50-50!
Answer: (a).Cleaving, sequencing and ordering

232. Edman degradation is used for _________
a. Identifying N-terminal amino acids
b. Identifying C-terminal amino acids
c. Identifying amino acid
d. Identifying carbohydrates
View Answer Report Discuss 50-50!
Answer: (a).Identifying N-terminal amino acids

233. What best summarizes the MALDI method by which gas phase ions are produced for mass spectrometry?
a. Sample is hit by a low energy xenon beam
b. Sample is forced through a narrow capillary tube and the solvent rapidly evaporates
c. Sample is embedded in a crystalline matrix and bombarded by laser beams
d. Sample is heated and then bombarded by electrons
View Answer Report Discuss 50-50!
Answer: (c).Sample is embedded in a crystalline matrix and bombarded by laser beams

234. Which of the following is Edman reagent?
a. Phenylisothiocyanate
b. CF₃COOH
c. FDNB
d. Phenylthiocarbonyl
View Answer Report Discuss 50-50!
Answer: (a).Phenylisothiocyanate