In cats, black coat color is dominant over gray. A female black cat whose mother is gray mates with a gray male. If this female has a litter of six kittens, what is the probability that three will be black?

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#Question id: 175

#Section 2: General Biology

The ionic charges associated with a protein molecule are ________.

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#Question id: 176

#Section 2: General Biology

A peptide has the sequence Glu–His–Trp–Ser–Gly–Leu–Arg–Pro–Gly. What is the net charge of the molecule at pH 3

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#Question id: 178

#Section 2: General Biology

Given the pKa values of different acidic sites in cysteine, the principal ionic form which will never exist at any pH

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#Question id: 180

#Section 2: General Biology

Which of the following statements about aromatic amino acids is correct?

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#Question id: 181

#Section 2: General Biology

Titration of valine by a strong base, for example NaOH, reveals two pK’s. The titration reaction occurring at pK2 (pK2 = 9.62) is:

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#Question id: 182

#Section 2: General Biology

Which amino acid is least likely to participate in acid-base catalysis?