Protein Engineering Mock Test 4

10%

Question 1 of 10

1. Nucleation represents which order phase transition?

Third-order

Second-order

First-order

Zero-order

Question 1 of 10

Question 2 of 10

2. Which of the following isotope is NMR inactive?

¹³C

¹H

¹⁶O

³¹P

Question 2 of 10

Question 3 of 10

3. The chemical shift of an atomic nucleus depends on its molecular environment and is different for each atom in a protein molecule.

False

True

Question 3 of 10

Question 4 of 10

4. Which component of the mass spectrometers separates the ion beams into its components?

Sample handling system

Ion source

Analyzer

Detector

Question 4 of 10

Question 5 of 10

5. Which of the following is not used to promote the formation of proteins crystals?

Ammonium sulfate

Tris-HCL

PEG

Ammonium nitrate

Question 5 of 10

Question 6 of 10

6. Which of the following isotopes has a magnetic spin?

¹⁶O

¹²C

¹⁴N

¹⁵N

Question 6 of 10

Question 7 of 10

7. What is another term for residual bodies?

Storage granules

Heterophagic vacuoles

Autophagic vacuoles

Telolysosomes

Question 7 of 10

Question 8 of 10

8. What is the first step in the X – ray crystallography of proteins?

X – ray diffraction

Creating an electron density map

Purification of protein

Precipitation of protein

Question 8 of 10

Question 9 of 10

9. What is the device on which the crystal (grown in a lab) is mounted known as?

Collimator

X – ray source

Refractometer

Goniometer

Question 9 of 10

Question 10 of 10

10. Which of the following is not related to vapour diffusion method of protein crystallization?

High concentration in reservoir

The Most commonly used method

An abrupt change in concentration

Gentle and gradual change in concentration

Question 10 of 10