Life Sciences
GATE XL concept:mass-spectrometry PYQs
Build your understanding with focused practice from past exam papers.
How to practice concept:mass-spectrometry
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–2 of 2. Imported answers require independent review unless marked reviewed.
Question 46
Open questionXL-QNAT2 marksNeeds review
The spectrum of a protein obtained using electrospray ionization mass spectrometry (ESI-MS) is shown below. Two peaks, one at m/z = 296.0 and the other at m/z = 3552.5, are marked. The mass of the protein associated with the m/z = 296.0 peak is __________ Da. (Round off to two decimal places)
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Open questionXL-QNAT2 marksNeeds review
An uncharged protein (P) has an Asp in position 23 with a molecular weight of 6501 Da, as determined by mass spectrometry. The uncharged mutant of this protein (P′) contains a single amino acid substitution with Asn at position 23. The molecular weight of P′, as determined by mass spectrometry (rounded off to one decimal place) is ____Da.
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