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A bacterial culture is growing as illustrated graphically. At the time indicated by the arrow labeled 1, an antibiotic is app

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Answer #1

1. Bacterostatic

2. Bactericidal

Antibiotic 1 is bacteriostatic because when it is applied, the viable count becomes constant. There is neither increased not decrease in the number of bacteria.

Bacteriostatic is a substance which stops bacteria from growing.

Antibiotic 2 is bactericidal because when it is applied, the viable count decreases.

Bactericidal is a substance which kills bacteria.

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