Practice Test 3 Answers

Practice Test 3 Answers - PRACTICE EXAM QUESTIONS FOR...

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Page 1 of 6 PRACTICE EXAM QUESTIONS FOR EXAMINATION 3 1. In prokaryotes the nucleoid region is A) the site of DNA replication B) the site of protein synthesis C) the site of RNA transcription D) A, B and C are correct E) A and C are correct 2. In prokaryotes: A) inactive ribosomes are found in the “cytoplasm” of the cell as separate small (30s) and large (50s) subunits B) inactive ribosomes are found preassembled in the nucleoid region and are recruited as needed C) ribosomal subunits are recruited to the nucleoid region and assembled as active 70S ribosomes D) A, B and C are correct E) A and C are correct 3. The ability of an enveloped virus to infect a specific cell type requires: A) the interaction between the viral genetic material (DNA) and “receptor” proteins on the host membrane B) the interaction of viral glycoproteins on the viral surface and “receptor” proteins on the host membrane C) that the virus utilize RNA as its genetic material D) the ability of the lysosomes of the host cell to degrade the viral capsid E) the presence of reverse transcriptase 4. During the lytic cycle of viral replication A) the viral genome is integrated into the host genome as a provirus B) the virus takes over the cellular machinery of the host immediately and produces large numbers of new viral particles, resulting in the rupture of the cell C) the provirus remains inactive in the cell through many cell cycles before it is reactivated to produce low levels of viral particles D) A, B and C are correct E) A and C are correct 5. Reverse transcriptase is: A) an enzyme that removes the HIV-1 genome from the host DNA B) an enzyme that copies the viral RNA template to make a DNA copy C) an enzyme responsible for integrating the viral RNA into the host DNA D) the protein on the cell surface that recognizes the virus E) the enzyme in the virus that is used to get the virus into the cell
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Page 2 of 6 6. Approximately how many base pairs of DNA are present in a single copy of the human genome? A) 6x10
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Practice Test 3 Answers - PRACTICE EXAM QUESTIONS FOR...

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