Definition: Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.
Input: An antibiotic can also be classified according to the range of pathogens against which it is effective. Penicillin G will destroy only a few species of bacteria and is known as a narrow spectrum antibiotic. Tetracycline is effective against a wide range of organisms and is known as a broad spectrum antibiotic. Antibiotic resistance Antibiotic resistance. Bacteria are termed drug-resistant when they are no longer inhibited by an antibiotic to which they were previously sensitive. The emergence and spread of antibacterial-resistant bacteria has continued to grow due to both the over-use and misuse of antibiotics. Gram+ cells are only part of the bacterial world. There are many types of harmful bacteria that are Gram-negative. Penicillin does not work against Gram-negative bacteria, since the Gram- cell wall has an extra layer of protection that interferes with the drug reaching the peptidoglydan in Gram-negative bacterial cell walls. Therefore other antibiotics have been developed to work against Gram- cells. Since the introduction of penicillin, a variety of other classes of antibiotics have been discovered and put to use in fighting bacterial infections. Each class of antibiotics has its own mode of action or MOA. The mode of action is specifically how the drug works to disable or kill bacteria. Friendly bacteria help keep you healthy in many ways, so when antibiotics kill friendly bacteria, your health can suffer because you lose these benefits. Additionally, losing friendly bacteria can give other types of bacteria room to multiply, leading to opportunistic infection. Antibiotics are medications used specifically to kill or disable bacteria. All bacteria are prokaryotic. organisms, meaning that their cells are different than cells of the human body. These differences can be exploited, so that antibiotic drugs can kill bacteria without harming us. Most of the bacterial world falls into one of two categories, Gram+ and Gram-, based on Article Summary: Antibiotics are drugs used to fight bacterial infections. Although there are similarities between bacteria and human cells, there are many differences as well. Antibiotics work by affecting things that bacterial cells have but human cells don't. For example, human cells do not have cell walls, while many types of bacteria do. The antibiotic penicillin works by keeping a bacterium from building a cell wall. Bacteria and human cells also differ in the structure of their cell membranes and the machinery they use to build proteins or copy DNA. Antibiotics kill bacteria, not archaea, fungi, or protists. The discovery of the antibiotic penicillin in the 1920s made a big impact on human history. Not only did it lead to a cure for bacterial infections that were once deadly, but it also led a big interest in finding new antibiotics. The effects of the antibiotic drug ceftazidine on Staphylococcus aureus bacteria. The antibiotic kills the bacteria (red) by causing the cell wall to disintegrate (yellow remnants). Antibiotics are chemicals that kill or inhibit the growth of bacteria and are used to treat bacterial infections. They are produced in nature by soil bacteria and fungi. This gives the microbe an advantage when competing for food and water and other limited resources in a particular habitat, as the antibiotic kills off their competition. How do antibiotics work Antibiotics take advantage of the difference between the structure of the bacterial cell and the host's cell. They either prevent the bacterial cells from multiplying so that the bacterial population remains the same, allowing the host's defence mechanism to fight the infection or kill the bacteria, for example stopping the mechanism responsible for building their cell walls. Query: how does penicillin destroy bacteria
Output:
The antibiotic penicillin works by keeping a bacterium from building a cell wall.