We are going post around 10 Paper II questions daily. Hope it will be beneficial.
1.
a. What is the pH of Distilled water? Can give the reasons? 3M
b. What essential is the difference between distilled and deionized water? 3M
2. Can you draw competitive and noncompetitive inhibition Lineweaver-Burke Plots. Explain these different trends with respect to the mode of inhibition. 6M
3.
a. Explain the condition under which two species can co-exist in a single niche? Don’t they reject competitive exclusion principle. 3M
b. Explain relationship between Biomass and productivity. 3M
c. Explain adaptive radiation with example of Darwinian finches.3M
4. a. At pH 7, polylysine, which is a polypeptide in which all the residues are lysine, adopts a random coil conformation with no regular secondary structure, However, at pH 12 it is present as an α-helix. Explain. 3M
| Residue Number | Phi (deg) | Psi (deg) |
| 1 | -60 | 147 |
| 2 | -49 | -32 |
| 3 | -67 | -34 |
| 4 | -58 | -49 |
| 5 | -66 | -32 |
| 6 | -82 | -36 |
| 7 | -69 | -44 |
| 8 | -61 | -44 |
| 9 | -72 | -29 |
| 10 | -66 | -65 |
| 11 | -67 | -23 |
5. The free energy diagram of Glycolysis shown in Figure. What do you confer or propose from this. 6M
6. What is the difference between climacteric and non-climacteric fruit? Give three examples? 6M
7. What is "photorespiration" and why it is needed by plants? 3M
8. How is the depletion of ozone affecting the plankton levels in the oceans? 3M
9. Why virulence lost on sub-culturing? 6M
10. What are abzymes and ribozymes. Explain the differences and similarities? 6M?
CSIR JRF/NET Life Sciences Paper II Questions–1
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