AP_Bio_Unit_3_Study_Guide_Chapter_18

AP_Bio_Unit_3_Study_Guide_Chapter_18 - Name: _ Class: _...

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Name: ________________________ Class: ___________________ Date: __________ ID: A 1 AP Bio Unit 3 Study Guide Chapter 18 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Viral genomes can consist of any of the following except a. double-stranded DNA. b. double-stranded RNA. c. single-stranded DNA. d. single-stranded RNA. e. helical capsomeres. ____ 2. Bacteriophage DNA that have become integrated into the host cell chromosome are called a. intemperate bacteriophages. b. transposons. c. prophages. d. T-even phages. e. plasmids. ____ 3. Which of the following statements about the lysogenic cycle of lambda ( λ . phage is incorrect ? a. After infection the viral genes immediately turn the host cell into a lambda-producing factory, and the host cell then lyses. b. Most of the prophage genes are silenced by the product of a particular prophage gene. c. The phage genome replicates along with the host genome. d. Certain environmental triggers can cause the phage to exit the host genome, switching from the lysogenic to the lytic cycle. e. The phage DNA is incorporated by genetic recombination (crossing over. into a specific site on the host cell's DNA. ____ 4. Viruses with single-stranded RNA that acts as a template for DNA synthesis are known as a. retroviruses. b. proviruses. c. viroids. d. bacteriophages. e. lytic phages. ____ 5. What is the function of reverse transcriptase in retroviruses? a. It hydrolyzes the host cell's DNA. b. It uses viral RNA as a template for DNA synthesis. c. It converts host cell RNA into viral DNA. d. It translates viral RNA into proteins. e. It uses viral RNA as a template for making complementary RNA strands. ____ 6. Which of the following can be effective against viral diseases? a. vaccination b. nucleoside analogs that inhibit DNA synthesis c. antibiotics d. A and B only e. A, B, and C
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Name: ________________________ ID: A 2 ____ 7. Which of the following contributes to the emergence of viral disease? a.
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AP_Bio_Unit_3_Study_Guide_Chapter_18 - Name: _ Class: _...

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