Practice Questions

TLS Online TPP Program

#Question id: 166

For amino acids with neutral R groups, at any pH below the pI of the amino acid, the population of amino acids in solution will have:

#Section 2: General Biology

a net negative charge.
a net positive charge.
no charged groups.
no net charge.

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TLS Online TPP Program

#Question id: 4153

#Section 3: Genetics, Cellular and Molecular Biology

Ubiquitin-mediated protein degradation is a complex process, and many of the signals remain unknown. One known signal involves recognition of amino acids in a processed protein that are either stabilizing (Ala, Gly, Met, Ser, etc.) or destabilizing (Arg, Asp, Leu, Lys, Phe, etc.), and are located at:

TLS Online TPP Program

#Question id: 4155

#Section 3: Genetics, Cellular and Molecular Biology

Of all the possible triplet codons, __ do not code for an amino acid.

TLS Online TPP Program

#Question id: 4156

#Section 3: Genetics, Cellular and Molecular Biology

The reading frame of DNA is fixed by

TLS Online TPP Program

#Question id: 4157

#Section 3: Genetics, Cellular and Molecular Biology

At the ribosome, the codon and anticodon associate by __.