1. What was the first virus ever discovered?
    AIDS virus/ Epstein-Barr virus /Rhinovirus /Tobacco mosaic virus

2. Which of the following cannot be the stucture of the genes of a virus?
    Single stranded DNA Double stranded DNA Double stranded RNA A stand composed of both RNA and DNA

3. What type of molecule is the capsid surrounding the virus made of?
    DNA/ Protein /RNA /Cellulose

4. What is the reproductive cycle of a phage virus called in which the virus's DNA is combined with the host cell's DNA to form a prophage?
    Lytic cycle /Mitosis/ Meiosis I /Lysogenic cycle

5. Which enzyme are retroviruses equiped with that allows them to transcribe DNA from an RNA template?
    DNA polymerase/ Reverse transcriptase/ Primase/ Ligase

6. What are the tiny molecules of naked circular RNA that infect plants called?
    Prions Viroids/ RNA /viruses /Tobacco mosaic virus

7. What is the major component of the bacterial genome?
    One double-stranded, circular DNA molecule One single-stranded, circular RNA molecule One double-stranded, linear DNA molecule None of the above

8. How do bacterial cells divide and reproduce?
    Meiosis I/ Binary fission/ Binary fusion/ Meiosis II

9. True or False: Bacterial cells undergo genetic recombination.
    True /False

10. What is the direct transfer of genetic material between two bacterial cells that are temporarily joined?
    Transduction/ Conjugation/ Transformation/ Recombination