Here's the correct matching of terms from Column A to definitions in Column B:
- bacteriophage - aa. virus that infects bacteria
- capsid - e. the protein coat that surrounds a virus
- infection - ba. type of infection in which a virus immediately starts replicating in the host cell
- prophage - da. piece of virus DNA that becomes a part of a bacterium's genome until activated to produce new bacteriophages
- lysogenic infection - the type of infection in which a virus does not immediately start replicating itself but inserts a piece of DNA into the host cell's genome, which becomes activated at a later date
- retrovirus - e. a virus that, upon infection of a host cell, makes a DNA copy of its RNA and inserts that piece of DNA into the cell's genome
Note that the matching for "retrovirus" is a repeat of the "e" definition, so you would just match it with the appropriate description if asked distinctly.