The Effects Of Antibiotics Bacterial Growth?

901 WordsJun 7, 20154 Pages
Randhawa 1 Zorawar Randhawa Mrs. Eideh Honors Biology 8 June 2015 Effects of Antibiotics Bacterial Growth Bacteria are the most common and ancient microorganisms on earth. Most bacteria are microscopic, measuring 1 micron in length. However, colonies of bacteria grown in a laboratory petri dish can be seen with the unaided eye. When considering the pH level, bacteria are classified as either acidophiles (acid-loving), neutrophiles (neutral ph range), or alkaliphiles (alkali-loving). The one that causes disease in humans would be the neutrophiles, which have an ideal pH range of 5.4 to 8.0. There are exceptions, however, like Alcaligenes faecalis and Vibrio choleae, which are both alkaliphiles and can infect humans. There are physical and nutritional factors that affect bacterial growth in the environment. Sterilization is needed to keep an environment free from bacterial growth. Failure to sterilize bacterial growth in our food products today leads to the unfortunate consequence of food poisoning. Randhawa 2 During lag phase, bacteria adapt themselves to growth conditions. It is the period where the individual bacteria are maturing and not yet able to divide. During the lag phase of the bacterial growth cycle, synthesis of RNA, enzymes and other molecules occurs. The log phase (sometimes called the logarithmic phase or the exponential phase) is a period characterized by cell doubling.[3] The number of new bacteria
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