Answers and winners 151116

CSIR-UGC section

1.      A DNA solution has a A260 value of 1.0. What is the DNA concentration in microgram DNA/mL?

Solution-  The answer can be obtained by Beer Lambert Law.

Concentration = A₂₆₀/E₂₆₀

                                          = 0.5/20 = 0.025mg DNA/mL

                           = 0.025 mdDNA/mL X 1000 µg/mg

                           = 25 µg DNA/mL

Therefore the sample has the concentration   of  25 µg DNA/mL

2.      AIPMT section

          Example of Napiform root is

a.       Beet root  b. sweet potato c. turnip

Ans- Napiform is form of root which are large and round at top tapering down sharply and becoming exceedingly slender. Both beet root and turnip are the examples of napiform root.

Winners

No correct answers were provided for the given problem in CSIR UGC section

G. Govind from Baroda gave the correct answer for AIPMT section. More students are encourages to actively participate.

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