NH2 sulfanilamide OH No folic acid PABA bacterial die Bacterial enzyme Fig 14.7 sulfa drugs are metabolized to sulfanilamide, which binds to the bacterial enzymes and keeps them from doing their job
C O N OH H H S O NH2 O N H H No folic acid bacterial die PABA sulfanilamide Bacterial enzyme Fig 14.7 sulfa drugs are metabolized to sulfanilamide, which binds to the bacterial enzymes and keeps them from doing their job
Antibiotics Penicillin and related compounds(cephalosporins fy l kill bacteria by inactivating an enzyme responsible for strengthening the bacteria cell wall NH H penicillin G cephalexin He most other antibiotics, are produced by microorganisms that can be mass-producedlgas Fig 14.8 Penicillins, such as penicillin G, and cephalosporin, such as cephalexin, as well large vats. The antibiotics are then harvested and purified
• Antibiotics • Penicillin and related compounds (cephalosporins, 头孢 霉素) kill bacteria by inactivating an enzyme responsible for strengthening the bacteria cell wall. NH2 O N H N S CH3 HO O O O N H O N S CH3 CH3 O OH Fig 14.8 Penicillins, such as penicillin G, and cephalosporin, such as cephalexin, as well as most other antibiotics, are produced by microorganisms that can be mass-produced in large vats. The antibiotics are then harvested and purified penicillin G cephalexin
Chemotherapy can inhibit the ability of viruses to replicate Nucleic acids Animol cell Protein coot Bacterium Virus Fig 14.9 viruses are much smaller than bacteria and many times smaller than animal cells, (Notice the small dot representing the virus. the smallest of all pathogens, viruses consist mostly of nucleic acids enclosed in a protein coat
Chemotherapy can inhibit the ability of viruses to replicate Fig 14.9 viruses are much smaller than bacteria and many times smaller than animal cells, (Notice the small dot representing the virus.) the smallest of all pathogens, viruses consist mostly of nucleic acids enclosed in a protein coat