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are Antibiotics are useful for limiting the growth of most pathogenic bacteria?
no, many bacteria have become resistant due to improper use of antibiotics.
A type of bacteria that produces many antibiotics?
e. coli
What did penicillin do?
it cured many diseases
What harms a chloroplast?
There are many things that harm a chloroplast. The wrong foods can do so, such as fried foods. Some antibiotics can harm them as well.
How does resistance develop in bacteria?
Bacteria, like all organisms, have phenotypic variations. Some bacteria are resistant to antibacterial drugs and survive the onslaught of these drugs. They then go on to have progeny ( by fission ) that they confer this resistance on so that you have a new population of resistant bacteria.
What phase is most susceptible to antibiotics?
It is the exponential phase. Many antibiotic such as the Streptogramin family work on the ribosome and indeed the DNA and RNA polymerases. These are most active when the bacteria are dividing and so it causes more harm as it were. Also in Mycobacterium, when dividing it does not have such a thick cell wall, and so it is easier for the antibiotics to penatrate that is true, also known as the Log phase and is when an organism is most sensative to antibiotics like penicillin-
What properties should an antibiotic have?
Antibiotics should be able to kill (or at least stop) a bacteria without causing harm to the individual on the medicine. This proves to be difficult in many cases, because 1) Many systems in a bacterial cell are similar to our own cells, and 2) We do not know what unintended consequences a drug can have until animal (or human) trials. So, most antibiotics affect the cell wall of the bacteria (which humans don't have) or the ribosome (which is a bit different from ours).
Why can antibiotics treat flu-like symptoms caused by bacteria but are ineffective against flu?
Because the way antibiotics treat those symptoms is by killing the bacteria that cause them. If the symptoms are caused by viruses, then antibiotics can't help since they are not made to be able to "kill" viruses, just bacteria. Flu viruses are not really living organisms like bacteria are. So viruses must be inactivated rather than killed. Antibiotics can neither kill nor inactivate viruses. They are created to be used to kill only specific bacteria, they do not kill every kind of bacteria, either. That is why there are so many different kinds of antibiotics. Antibiotics can treat flu-like symptoms caused by some bacteria, because the right antibiotics can kill bacteria. So although flu like symptoms are similar to those of the flu, they are caused by different microbes so are not cured in the same way.
Why should antibiotics medicines not be given until and unless prescribed by the doctors?
many bacteria have become resistant to ordinary penicillin antibiotics,this is why when a doc diagonises you they will pick the antibiotic most suited to treating the infection,also some people are allergic to certin antibiotics without knowing it so if you take non prescription antibiotics it may not treat the infection and put your health further at risk
How do antibiotics affect protein synthesis?
Generally not: antibiotics are essentially antibacterials, that is drugs counteracting bacterial infections like pneumonia, salmonella and the like. The specific mechanism of working of antibiotics depends on the specific drug under examination. Penicillin and its derivatives are bacterial killers: they enters into the bacteria membrane and inhibit basic bacteria life processes. A few of these processes are also related to bacteria proteins syntheses and, under this point of view, these class of antibiotics are also protein synthesis inhibitors. The important think to remember is that they inhibit, among other effects, the synthesis of bacterial proteins, not of the host (generally a human) protein syntheses. Other antibiotics inhibits bacteria multiplication by thwarting bacteria DNA splitting and replication. Also in this case, since many proteins are involved in the DNA replication process, bacteria proteins are involved, but the main antibiotics effect is to inhibit DNA replication.
Why do many ulcer patients respond favorably to treatment with antibiotics?
Because most gastric ulcers are caused by bacteria infection. which makes it easier for antibiotics to fight against this bacterias.
What does bacteria do for the environment?
Bacteria can do many things such as harm or body with sickness or it can be helpful and help your body digest food and turn milk into yogurt.
