Which of the following statements is true?Question 14Select one:a.Some viruses have two alternative life cyclesb.Viruses are not considered to be organisms since they are very smallc.Viruses can infect only eukaryotic hosts since they cannot pass the bacterial and plant cell wallsd.Viruses cannot reproduce within a host
Question
Which of the following statements is true?Question 14Select one:a.Some viruses have two alternative life cyclesb.Viruses are not considered to be organisms since they are very smallc.Viruses can infect only eukaryotic hosts since they cannot pass the bacterial and plant cell wallsd.Viruses cannot reproduce within a host
Solution
The correct answer is a. Some viruses have two alternative life cycles. This is true because viruses can have a lytic cycle, where they take over the host's cell machinery to replicate and then burst the cell to release the new viruses, or a lysogenic cycle, where they integrate their genetic material into the host's genome and replicate along with the host cell. The other statements are false. Viruses are not considered organisms not because of their size, but because they cannot carry out metabolic processes on their own and must infect a host cell to reproduce. Viruses can infect a wide range of hosts, including bacteria (in which case they are called bacteriophages), plants, and animals. And finally, viruses must reproduce within a host - they cannot reproduce on their own.
Similar Questions
Which of the following is true about viruses?Group of answer choicesAll of the above.They cannot reproduce themselves.They are not composed of cells.They cannot metabolize nutrients.They have DNA or RNA.
11. Which of the following statements about viruses is true?a. They are acellular.b. They can regulate the movements of substances into and out of the cell.c. They can reproduce outside of living cells.d. They have subcellular compartments.e. They are readily destroyed by antibiotics.
)Viruses: A) Can replicate outside host cells B) Are the smallest living organisms C) Can have either DNA or RNA genomes D) Do not infect plant cells E) Always kill the cells they infect
6. a. Explain why many biologists consider viruses to be non-living.b. Explain why the cell that is invaded by a virus is called a host cell
Which of these is considered non-living by most scientists? A. Bacteria B. Viruses
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