Top best answers to the question «How antibiotics effect bacteria»
How do antibiotics affect bacteria?
- Antibiotics Harm Friendly Bacteria. When you take an antibiotic, it enters your bloodstream and travels through your body, killing bacteria but not human cells. There are few differences, however, between harmful and friendly bacteria. Antibiotics kill not only the bad bacteria making you sick, but also your resident friendly bacteria.
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More specifically, treatment with lethal concentrations of bactericidal antibiotics results in the production of harmful hydroxyl radicals through a common oxidative damage cellular death pathway involving alterations in central metabolism (TCA cycle) and iron metabolism 8 – 10.
Erythromycin is an antibiotic produced by a strain of Streptomyceserythreaus. This antibiotic works by inhibiting protein synthesis but not nucleic synthesis. Erythromycin has inhibitory effects on gram-negative cocci as well as some gram-positive bacteria.
Antibiotics disrupt essential processes or structures in the bacterial cell. This either kills the bacterium or slows down bacterial growth. Depending on these effects an antibiotic is said to be bactericidal or bacteriostatic. Bactericidal and bacteriostatic antibiotics
A larger zone of inhibition indicates a greater effectiveness at killing bacteria and this will also depend on the resistance capabilities of the bacteria. Some antibiotics are bactericidal – directly killing bacteria – and some are bacteriostatic – limiting bacteria growth. Evaluation Points
The Effect of Different Antibiotics on Bacteria Variables:. Manipulated Variable: Types of antibiotics and types of bacteria. Responding Variable: The diameter of clear... Procedure:. Hands are washed with dettol handwash. Disinfectant spray is sprayed thoroughly to the working area. Precautions:…
In general, antibiotics keep bacteria from building the parts that are needed for growth. Targets of antibiotics. There are some antibiotics that act by attacking plasma membranes. Most antibiotics, though, work by holding bacterial populations in check until the immune system can take over.
Another kind of antibiotic--tetracycline--also inhibits bacterial growth by stopping protein synthesis. Both bacteria and humans carry out protein synthesis on structures called ribosomes.