Dr Chung is a biologist who works on diseases of the liver. She is studying infectious agents that invade liver cells. She has
narrowed down the cause of the disease she is studying to a type of virus or a protest
Which of the following characteristics would be the BEST choice for Dr. Chung to use in determining whether the infectious agent she is studying is a virus or a protist?
A
It infects both liver cells and red blood cells
It has proteins in its outermost layer.
O
It is capable of changing over time.
D
it has DNA as its genetic material