A compound has a pKa of 7.4. To 100 mL of a 1.0 M solution of this compound at pH 8.0 is added 30 mL of 1.0 M hydrochloric acid. The resulting solution is pH:

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#Question id: 3261

#Section 3: Genetics, Cellular and Molecular Biology

A parent population (P) is change into daughter populations (Q) which grow in habitats. After 1000 generations, the equilibrium frequency distribution of of the daughter populations is shown in the figure below. For reference, the vertical line represents the mean of the parent population. Which type of natural selection?

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#Question id: 85

#Section 2: General Biology

Below is the structure for a cyclic D-monosaccharide. Which is the anomeric carbon atom?

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#Question id: 2019

#Section 2: General Biology

Which of the following is not a component of an insectʹs defense against infection?

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#Question id: 139

#Section 2: General Biology

 A sequence of amino acids with a relatively high hydropathy is very likely to function by

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#Question id: 16782

#Section 1: Engineering Mathematics

A sample of 15 data is as follows: 17,  18, 17, 17, 13, 18, 5, 5, 6, 7, 8, 9, 20,  17, 3. The mode of the data is