Question

multiple - choice question
how do bacteriocidal antibiotics help to fight pathogens?
they stop metabolism (enzyme action).
they kill bacteria by preventing the production of a cell wall.
they stop replication by preventing dna replication.

Explanation:

Bacteriocidal antibiotics work by killing bacteria. One common mechanism is preventing the production of the bacterial cell wall. Without a proper cell wall, bacteria are more vulnerable and eventually die. Stopping metabolism (enzyme action) is more characteristic of bacteriostatic antibiotics (which inhibit growth rather than kill). Stopping replication by preventing DNA replication is also not the main mechanism for bacteriocidal action in the context of cell - wall - related killing.

Answer:

They kill bacteria by preventing the production of a cell wall.