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TLS Online TPP Program

#Question id: 181

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

#Section 2: General Biology

  1. —COOH + OH-  -> —COO- + H2O.

  2. —COOH + —NH2 -> —COO- + —NH2+.

  3.  —COO- + —NH2+ -> —COOH + —NH2.

  4. —NH3+ + OH-  -> —NH2 + H2O.

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TLS Online TPP Program

#Question id: 132

#Section 2: General Biology

Proline is distinct among the 20 commonly found amino acids because
TLS Online TPP Program

#Question id: 133

#Section 2: General Biology

Tyrosine and tryptophan are less hydrophobic than phenylalanine because
TLS Online TPP Program

#Question id: 134

#Section 2: General Biology

Ultraviolet (UV) light can be used to estimate protein solution concentrations because
TLS Online TPP Program

#Question id: 136

#Section 2: General Biology

The amino acids in polypeptide chains which contain sulfur (S) are
TLS Online TPP Program

#Question id: 137

#Section 2: General Biology

Disulfide bridges can form in proteins ________.
TLS Online TPP Program

#Question id: 138

#Section 2: General Biology

A protein that contains more isoleucine, phenylalanine and leucine than asparagine, lysine and arginine is most likely