Bissoy.com
Doctors Medicines MCQs Q&A

Electrospray ionization MS and matrix-assisted laser desorption ionization (MALDI) MS only differ in the ionization procedure used.

Electrospray ionization MS and matrix-assisted laser desorption ionization (MALDI) MS only differ in the ionization procedure used. Correct Answer True

In MALDI-MS, for example, the peptides are charged with positive ions and forced through an analyzing tube with a magnetic field. Peptides are analyzed in the gas phase. Because smaller peptides are deflected more than larger ones in a magnetic field, the peptide fragments can be separated according to molecular mass and charges. A detector generates a spectrum that displays ion intensity as a function of the mass-to-charge ratio.

Related Questions

Consider the following statements in respect of slow sand filter and rapid sand filter: 1. The two filters differ in respect of the standards regarding the non-uniformity of the sand used in their filtering media. 2. The two filters do not differ in respect of the effective size of the sand used in them. 3. The two filters differ in respect of their respective under-drainage system. 4. The two filters differ in respect of their respective rate of filtration. Which of the above statements are correct? 
Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysterisis. In such cases, the desorption equilibrium pressure is __________ that obtained for adsorption.
Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysterisis. In such cases, the desorption equilibrium pressure is __________ that obtained for adsorption.
Which of the following statements are correct? A. Laser printers use dry ink B. Unlike dot matrix and inkjet printers, laser printers do not use ink when producing a document C. Laser printers use the property of static electricity D. Laser printers produce ozone gas and tiny toner particulates in the air Choose the correct answer from the options given below
Electrospray ionization is suited for proteins that are __________________
Which of the following lasers can be used for laser radiation in MALDI?
Which of the following ionization technique uses a short laser pulse to achieve ionization?
An injection laser has active cavity losses of 25 cm-1 and the reflectivity of each laser facet is 30%. Determine the laser gain coefficient for the cavity it has a length of 500μm.
Consider the following statements: (a) LASER diode generates monochromatic coherent light which reduces chromatic dispersion (b) LASER source is useful for high power long-distance optical communication (c) LASERs have longer lifetime than LEDs (d) LASER diodes are less temperature-sensitive than LEDs Which of the above statements are correct?
The thulium doped fiber laser when pumped with alexandrite laser output at 0.786 μm, the laser emits at ___________