Which of the following is not true of the retrovirus genome?
A. It is composed of three genes flanked by LTRs.
B. The gag, pol, and env genes are transcribed as three separate mRNAs.
C. The env gene product is cleaved to generate viral envelope proteins.
D. The gag gene product is cleaved to generate viral coat proteins.
E. The pol gene product is cleaved to generate reverse transcriptase, integrase, and a protease.
B
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Which of the following statements about the bacterial ribosome is nottrue?
A. The 70S ribosome is a complex of 50S and 30S subunits. B. The entire protein component of the 30S subunit is a single polypeptide chain. C. Each ribosomal subunit contains at least one RNA molecule. D. An rRNA molecule, rather than protein, catalyzes peptidebond formation.
During elongation, ribosomes catalyze
formation of ____ between the amino acid and the growing polypeptide.
a. a hydrogen bond b. a peptide bond c. a polar covalent bond d. a non-polar covalent bond e. a sulfur bond
Oncogenic viruses include all the following except ________.
A. Papillomavirus B. hepatitis B virus C. HTLV-I and HTLV-II viruses D. measles virus E. Epstein-Barr virus
Explain how ESTs are identified and how they aid in finding the genes within an organism's genome
What will be an ideal response?