How do antibiotics attack gram positive bacteria?

how do bactericides attack and how do bacteriostatics inhibit growth?

How do antibiotics attack gram positive bacteria?
Well, gram positive bacteria have cell walls made of substances called peptidoglycans. Certain antibiotics such as the penilicilin, can interfere with the structure of the cell wall, thus resulting in a fragile capsule of the bacteria, renderring the bacteria helpless and soon, they will be dead.
Reply:am not sure about this but i'm guessing it has to do with the bacteriophages. the bacteriophages attack the bacteria... it injects it self to the cell of bacteria then the cell will bursts then it will replicate... and so on and so forth...