When a virus infects a bacterial cell, often new viruses are assembled and released when the host bacterial cell is lysed. If these new viruses go on to infect new bacterial cells the host cells may not be lysed
What is the most plausible explanation for this? A) The bacterial cell must be resistant to infection by the virus.
B) The virus carries genes that confer resistance to the host bacterial cell.
C) The host bacterium couples the viral infection with transformation.
D) The virus has entered the genome of the bacterial cell and is in the lysogenic stage.
D
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Variability in offspring is largely a result of ____
a. mutations b. nucleosomes c. Okazaki fragments d. DNA repairs e. RNA primers
The synthesis of thyroid hormone requires ____
a. sodium b. calcium c. iodide d. phosphate e. potassium
Phenotypically, a female (XX) mouse embryo that was transformed with a small piece of a Y chromosome bearing the SRY gene would develop as
A) a male. B) a female. C) an intersex individual. D) a male initially, then revert to female after birth. E) a female initially, then revert to male after birth.
In the mosses, archegonia produce
A. eggs. B. zygotes. C. diploid cells. D. sperm.