Bacteria Essay

An operon is a cluster of genes in a bacteria that are clustered together and have related functions. Genes in an operon are coexpressed, which means that they are turned on or off under a single promoter. The genes of the arabinose operon are Ara A, Ara B, and Ara D (or the B. A. D. genes) which are all digestive enzymes that allow bacteria to break down arabinose. When Ara A, Ara B, and Ara D cluster together they form the arabinose operon. The gene that replaces the arabinose operon is the…

Bacteria are one-celled organisms. When looked at under a microscope, they appear to be balls, rods, or spirals. Contrary to popular belief, most bacteria are actually good for other organisms. Under 1% of bacteria on Earth cause disease, and the bacteria that do can usually be treated with antibiotics (“Bacterial Infections: Medline Plus,” par 1). The common image of bacteria is that they are all horrific organisms that cause disease. While people should most definitely wash their hands to…

plates for both bacteria A and B using the three-sector streak…

Pneumonia, a lung infection caused by the bacterium Streptococcus pneumonia is a serious case of death at that time. Frederick Griffith was studying the possibility of creating a vaccine. During Griffith’s experiment, his experiments suggesting that bacteria are capable of transferring genetic information through a process of transformation. He began isolating two strain of Streptococcus pneumonia, the S strain and the R strain that varied dramatically in both appearances and their ability to…

are so many different diseases and sicknesses known to man that involve bacteria and other circumstances. A few of these being Crohn's Disease, Food Poisoning, Meningitis, and Ulcers. These bacteria are deadly in some cases and cause many problems in your body. The first thing we will do is go into what bacteria is and where it would be found. There are millions and billions of bacteria that exist that we cannot see. Bacteria is defined as single celled organisms that can only be seen with a…

This bacteria had a positive catalase test meaning that it contains the enzyme catalase and was able to turn the hydrogen peroxide into water and oxygen and that this bacteria uses aerobic respiration. When plated on a mannitol/salt plate the bacteria was able to grow on the plate meaning that it has a resistance to high salt environment and live in environments that are high in salt, but had a negative fermentation result meaning that it was unable to ferment mannitol. Also, this bacteria was…

transferred genes would make a difference on the growth and whether or not the bacteria would glow under UV light. Hypothesis: If the bacteria with the pGLO plasmid was grown on a plate containing LB and ampicillin then the bacteria will grow but not glow under UV light. If the bacteria with the pGLO plasmid was grown on a plate containing LB, ampicillin, and arabinose then it will be able to grow and glow under UV light. If the bacteria without pGLO plasmid was grown on a plate containing LB…

Hypothesis: I think that the bacterial growth will be different in terms of size, shape, type and color. I think that different bacterias will grow on each quadrant because each surface of collection has unique bacterias. The unique bacterias will contribute to the fact that the size and color of them will also be different. I also predict that the growth of bacteria on the toilet seat (1D) will have the most colonies because it is a frequently used/touched surface. The phone (1C) will have a…

growth stimulants in livestock. The bacteria in the livestock become resistant due to constant exposure to the antibiotics. When the meat harvested from these animals is packaged and sold, the bacteria are now exposed to the human population. This bacterium can make its way into the human body and cause various illnesses. Illnesses that were once easily cured with light antibiotics now require much stronger antibiotics. Some antibiotic resistant bacteria are MRSA, Campylobacter, and…

Worldwide, animals are administered sub-therapeutic doses of antibiotics so that meat industries can profit more. Because of this, a spread of resistant diseases become more likely, bacteria develop into different forms in livestock, and humans could become resistant to antibiotics due to consuming the tampered meats. Meat industries believe that bigger is better; though their demand for quicker meat production puts not only the health of the antibiotic-ingested animals at risk, but also the…