9. What does a viral DNA become after being associated with the bacterial chromosome?
A. gene
B. Prophage
C. Plasmid
D. Plaque
10. A positive-strand RNA virus:
A. must first be converted to a mRNA before it can be translated.
B. can be used directly to translate viral proteins.
C. will be degraded by host enzymes.
D. is not recognized by host ribosomes.
11. Which of the followings cannot be used to culture viruses?
A. tissue culture
B. liquid medium only
C. embryo
D. animal host
12. Which of the following statements applies to viruses?
A. They cannot be observed using a light microscope
B. They can be separated from homogenates of host cells using simple filters.
C. Release of a virus from its host cell is always associated with lysis of the cell.
D. Viruses are complexes of nucleic acid and proteins.
E. B, C and D
F. A and D
9. Answer is C: Plasmid.
10. Answer is B. can be used directly to translate viral proteins.
11. Answer is B. A liquid medium only. It cannot be used to culture viruses.
12. Answer is A and D
A. They cannot be observed using a light microscope.
D. Viruses are complexes of nucleic acid and proteins.
Viruses are macromolecular complexes which have nucleic acid and proteins.
They are very small to be observed by light microscopy.
Please do thumsup if you are ok with the answer
Thank you
Get Answers For Free
Most questions answered within 1 hours.