Practice Questions

TLS Online TPP Program

#Question id: 14488

A man and his wife appear for an interview for two posts. The probability of the husband's selection is 1/7 and that of the wife’s selection is 1/5. The probability that only one of them will be selected is

#Section 1: Engineering Mathematics

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#Question id: 170

#Section 2: General Biology

Desmosine, an uncommon amino acid is derived from

#Question id: 171

#Section 2: General Biology

An amino acid with two chiral carbon atoms

#Question id: 172

#Section 2: General Biology

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

#Question id: 174

#Section 2: General Biology

What is the net charge on the dipeptide Arg-Pro at pH 9.0? The table below gives the pKaʹs of the ionizable groups on the free amino acids.

#Question id: 175

#Section 2: General Biology

The ionic charges associated with a protein molecule are ________.

#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