A solution was prepared by dissolving 0.02 moles of acetic acid (HOAc; pKa = 4.8) in water to give 1 liter of solution. What is the pH? To this solution was then added 0.008 moles of concentrated sodium hydroxide (NaOH). What is the new pH? (In this problem, you may ignore changes in volume due to the addition of NaOH).

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#Question id: 3924

#Section 3: Genetics, Cellular and Molecular Biology

Characteristics of ligands involved in transcription include:

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#Question id: 3853

#Section 3: Genetics, Cellular and Molecular Biology

In E. coli, promoter sequences are located at which of the following position(s) on the template strand?

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#Question id: 14789

#Section 1: Engineering Mathematics

Let    and Then the value of the line integral  

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#Question id: 14845

#Section 1: Engineering Mathematics

Four persons are chosen at random from a group containing 3 men, 2 women and 4 children. The chance that exactly 2 of them will be children is

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#Question id: 3314

#Section 3: Genetics, Cellular and Molecular Biology

The body weight of offspring of bird species is range between 12 gm to 18 gm. In a laboratory experiment, species was subjected to selection pressure having influence on the offspring body weight. After many generations of experimental selection pressure, the body weight range between 14 gm to 16 gm. Which of the following natural selection operate on this species?