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TLS Online TPP Program

#Question id: 1847

Which of the following statements is TRUE of DNA vaccines?

#Section 2: General Biology

  1. DNA vaccines are relatively poor at stimulating cytotoxic T-lymphocyte responses in mice

  2. DNA vaccines must be administered on gold particles if they are to be effective

  3. DNA vaccines are only effective if followed by a protein boost

  4. DNA vaccines can have distinct advantages when preparing subunit vaccines against viruses that frequently alter their antigens

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TLS Online TPP Program

#Question id: 4148

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following is true about the sorting pathway for proteins destined for incorporation into lysosomes or the plasma membrane of eukaryotic cells?
TLS Online TPP Program

#Question id: 4149

#Section 3: Genetics, Cellular and Molecular Biology

Glycosylation of proteins inside the endoplasmic reticulum does not involve:
TLS Online TPP Program

#Question id: 4150

#Section 3: Genetics, Cellular and Molecular Biology

Posttranslational glycosylation of proteins is inhibited specifically by:
TLS Online TPP Program

#Question id: 4151

#Section 3: Genetics, Cellular and Molecular Biology

The signal sequences that direct proteins to the nucleus are:
TLS Online TPP Program

#Question id: 4152

#Section 3: Genetics, Cellular and Molecular Biology

The pathway for polypeptides exported from E. coli includes the following steps, which occur in what order for correct export?

1.  A chaperone, SecA, binds to the polypeptide.

2.  A chaperone, SecB, binds to the polypeptide.

3.  ATP is hydrolyzed by Sec A.

4.  SecA pushes 20 amino acids of the polypeptide into the translocation complex.
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: