MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Protein Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is a sample inlet technique? |
| A. | MALDI |
| B. | TOF |
| C. | ESI |
| D. | GC/HPLC |
| Answer» E. | |
| 2. |
Which of the following is not an ionization technique? |
| A. | MALDI |
| B. | ESI |
| C. | FAB |
| D. | HPLC |
| Answer» E. | |
| 3. |
ESI and MALDI belong to which of the following techniques? |
| A. | Detection |
| B. | Analysis |
| C. | Acceleration |
| D. | Ionization |
| Answer» E. | |
| 4. |
What is the average mass of glycine?Given data: Average mass of Carbon (C)=12.011,The average mass of Hydrogen (H)=1.008,The average mass of Oxygen (O)=15.999,The average mass of Nitrogen (N)=14.007. |
| A. | 87.032 |
| B. | 99.0656 |
| C. | 57.021 |
| D. | 57.052 |
| Answer» E. | |
| 5. |
What is the monoisotopic mass of glycine?Given data: Mass of the most abundant isotope of Carbon (C°)=12.0000,Mass of most abundant isotope of Hydrogen (H°)=1.0078,Mass of most abundant isotope of Oxygen (O°)=15.9949,Mass of most abundant isotope of Nitrogen (N°)=14.0031. |
| A. | 99.0687 |
| B. | 87.2365 |
| C. | 57.052 |
| D. | 57.0214 |
| Answer» E. | |
| 6. |
The average mass is the average of the isotopic masses of each element weighed for the isotopic abundance. |
| A. | False |
| B. | True |
| Answer» C. | |
| 7. |
Monoisotopic mass is the sum of masses for the most abundant isotope of each element in amino acid. |
| A. | False |
| B. | True |
| Answer» C. | |
| 8. |
Which component of the mass spectrometers produces a beam of charged particles characteristic of the sample? |
| A. | Radiation source |
| B. | Analyzer |
| C. | Detector |
| D. | Ion source/ Ionizer |
| Answer» E. | |
| 9. |
Which component of the mass spectrometers separates the ion beams into its components? |
| A. | Sample handling system |
| B. | Ion source |
| C. | Detector |
| D. | Analyzer |
| Answer» E. | |
| 10. |
Which of the following is not a component of mass spectrometric technique? |
| A. | Ion source |
| B. | Analyzer |
| C. | Detector |
| D. | X – ray source |
| Answer» E. | |
| 11. |
Mass spectrometers operate on the principle that moving ions may be deflected by an electric and magnetic field. |
| A. | False |
| B. | True |
| Answer» C. | |
| 12. |
Which of the following analytical technique can be used to identify a chemical substance by the sorting of gaseous ions in electric and magnetic fields according to their mass-to-charge ratios? |
| A. | Raman spectroscopy |
| B. | Atomic spectroscopy |
| C. | NMR spectroscopy |
| D. | Mass spectroscopy |
| Answer» E. | |
| 13. |
A mass spectrum is a plot of the ion signal as a function of the mass-to-charge ratio. |
| A. | False |
| B. | True |
| Answer» C. | |
| 14. |
Which among the following is an analytical technique that measures the mass-to-charge ratio of ions? |
| A. | Atomic spectroscopy |
| B. | NMR spectroscopy |
| C. | Infrared spectroscopy |
| D. | Mass spectroscopy |
| Answer» E. | |
| 15. |
Which of the following technique is used to determine the protein sequence? |
| A. | X – ray crystallography |
| B. | NMR spectroscopy |
| C. | Atomic spectroscopy |
| D. | Mass spectroscopy |
| Answer» E. | |