as all living beings microorganism to compete with each other for food and place, and in doing so they release certain compounds which are cidal to other microbes and inhibit their growth, also some time the anitmicrobial substance are the waste products of same of different type of microbes.
i have no ides
Antibiotics are not designed by any body. By defination they are synthesized by micro-organisms to inhibit growth of other micro-organisms. You have designing of the antibiotics in semisynthetic antibiotics. But probably it is done in trial and error method only, as on today.
Antiobiotics are actually the medicines for killing the micro-organisms that are harmful for the patients that's they are given antibiotics to kill the micro-organisms that are in their body to save them from harmful effects of micro bodies.
micro organisms are use full because they produce gas
penicilline
because now we have antibiotics
toxin
because they carry out respiration( they produce co2)
because they carry out respiration( they produce co2)
the intestines have a plethora of micro organisms which mainly include the Lactobacillus group that produce lactic acid. E.coli is also found in some amounts. The main significance of these intestinal micro organisms is that they prevent the growth of other harmful pathogenic organisms as they compete for basic nutrition.
medicines called vaccinations and antibiotics are taken as pills or injected - to fight microorganisms that cause illness.
Micro-organisms are in and on him.