Which of the following statements is a reason for NOT classifying viruses in one of three domains rather than in a fourth domain?
a. Viruses direct anabolic pathways of host cells.
b. Viruses are obligate parasites.
c. Some viruses can incorporate their genome into a host's genome.
d. Viruses are not composed of cells.
e. All of the answers are correct.
Ans: d. Viruses are not composed of cells.
You might also like to view...
Even in the absence of transpiration, some water can move into the roots and partially up the xylem columns. This phenomenon is due to
A. flooding. B. stomatal opening. C. root pressure. D. proton pumps. E. phloem translocation.
A permanent, inheritable change in the genetic information is called ________.
A. an alteration B. translation C. a mutation D. regeneration E. transcription
Sickle-cell anemia is caused by the absence of the alpha chain of hemoglobin
Indicate whether the statement is true or false
Cattle egrets have a ________ relationship with African Cape buffaloes.
A. predator-prey B. parasitic C. competitive D. commensalistic