If the half-life of a decaying isotope is 10 years, which statement is true after
20 years?

How do antiviral drugs work? in your own words.

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

{answer found. it's (3 ) }which statement describes the cell cycle? (1)the cell cycle is a process in which one cell divides into four genetically different cells. (2)the cell cycle is a process in which one cell divides into two genetically different cells. (3)the cell cycle is a process in which one cell divides into two genetically identical cells. (4)the cell cycle is a process in which one cell divides into four genetically identical cells.