Rate constant k for a first order reaction has been found to be 2.54 × 10^-3 sec^-1. Calculate its 3/4th life, (log 4 = 0.6020).

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#Question id: 14482

#Section 1: Engineering Mathematics

In a horse race the odds in favour of four horses H1, H2, H3, H4 are 1 : 3, 1 : 4, 1 : 5; 1 : 6 respectively not more than one wins at a time. Then the chance that one of them wins is

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#Question id: 3574

#Section 2: General Biology

Huntington diseased caused by a dominant allele and both parents are affected. If marker test that reveals only man is heterozygous while wife is homozygous. What are the chances that their children will have the disease?

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#Question id: 14172

#Section 4: Fundamentals of Biological Engineering

The growth of baker’s yeast (S. cerevisiae) on glucose may be simply described by the following equation:

In a batch reactor of volume 105 l, the final desired yeast concentration is 50 gdw/l. Using the above reaction stoichiometry. Determine the yield coefficients YX/S (biomass/glucose)?

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#Question id: 4347

#Section 3: Genetics, Cellular and Molecular Biology

According to the lac operon model proposed by Jacob and Monod, what is predicted to occur if the operator is removed from the operon?

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#Question id: 249

#Section 2: General Biology

According to Chargaffʹs observations of nucleotide composition of DNA samples, which of the following options are correct

A) % of (G + C) + % of (A + T) = 100%.

B) A = T.

C) G = C.

D) %A + %C + %T = 100%.