little explanation for each please (6-14; U) 11. Beta-lactamases a. bind to peni
ID: 133640 • Letter: L
Question
little explanation for each please
(6-14; U) 11. Beta-lactamases a. bind to penicillin-binding proteins. b. bind to peptides c. prevent the linking of glycan chains in peptidoglycan. d. break the beta-lactam ring. (6-14; E) 12. Why would co-administration of a bacteriostatic drug interfere with the effects of penicillin? a. Since most bacteriostatic drugs are produced from bacteria, but penicillin is produced from mold, the two drugs are b. A bacteriostatic drug produces interference in the ability of a bacterial cell to take in compounds from the outside c. Penicillin interferes with cell wall production/stabilization by cross-linking of peptidoglycan. As such, it only works when the d. The bacteriostatic drugs would bind directly to the penicillin, preventing both its uptake by the cell and its ability to perform its incompatible with each other environment. Penicillin must be taken in by the cell in order to have its effect, so this would directly inhibit it. cells are actively replicating and MAKING new peptidoglycan. A bacteriostatic drug works by shutting down replication, holding the cells "static." This would interfere with the mode of action required by the penicillin. duty within the bacterial cell.Explanation / Answer
Answer:
11). d. Break the beta-lactam ring
Explanation:
Certain bacteria had learned how to resist this common antibiotic. These resistant bacteria make beta-lactamase, an enzyme that quickly breaks down penicillin.
12). c. Penicillin interferes with cell wall production/stabilization by cross-linking of peptidoglycan. As such, it only works when the cells are actively replicating and MAKING new peptidoglycan. A bacteriostatic drug works by shutting down replication, holding the cells 'static.' This would interfere with the mode of action required by the penicillin.
Explanation:
The co-administration of antibiotic does not depend if they are bacteriostatic or bactericidal, depend on how they act together (antagonistic, synergistic or additive action). What may happen some times is that bactericidal antibiotics kill better proliferating cells (actively growing), and the inclusion of a bacteriostatic antibiotic can arrest the growth and prevent the killing by the bactericidal one, but it depend on the combination.
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