Question

what can you conclude from the experiment? remember that there is only bacterial growth in the plates cultured with only p. aeruginosa, only catheter sample, and with both p. aeruginosa and a. baumannii. click the view theory button if you need guidance with the question. a) acinetobacter baumannii acquired a new resistance against the antibiotics b) pseudomonas aeruginosa developed a susceptibility to the antibiotics c) acinetobacter baumannii was susceptible to antibiotics in the catheter sample d) pseudomonas aeruginosa acquired a new resistance to the antibiotics

Explanation:

The experiment has bacterial growth in plates with only \( P. aeruginosa \), only catheter sample, and both \( P. aeruginosa \) and \( A. baumannii \). For option d, if \( P. aeruginosa \) had acquired new resistance, it would grow (as seen in the plates with it alone and with \( A. baumannii \)), which aligns with the growth observation. Option a: No info on \( A. baumannii \) resistance change. Option b: Susceptibility would mean no growth, but there is growth. Option c: Susceptible would mean no growth in catheter sample (if it had antibiotics), but there is growth. So d is correct.

Answer:

d) Pseudomonas aeruginosa acquired a new resistance to the antibiotics