Bacterial growth

periods to establish a valid growth curve for E. coli. The growth curve’s shape and length is determined by the genetics of the organism, growth medium, and incubation conditions. (Saltman, Lab 9) Because bacteria reproduce by binary fission in a duplicate manner, the time of each doubling of the population is called the generation time. This generation growth is exponential. The purpose of this lab was to establish a growth curve to get a better understanding of the bacterium’s growth pattern under specific time segments and certain growth conditions. There are a few reasons to count the numbers of organisms in a solution or an environment. One is to determine the clinical definition of an infection. Another reason is to establish standards pertaining to water and food quality control and lastly, the need to know the desired number of organisms for a research experiment. By…

Conditions required for bacterial growth and therefore their reproduction are referred to as Extrinsic and Intrinsic factors. Bacteria can grow anywhere in the world including animals and plants, depending on their characteristic, type and so on. Knowing that, it seems like bacteria can grow everywhere once they have correct conditions. However there are a lot of factors that can affect bacterial growth. The factors affecting bacterial growth are the internal and external conditions of the…

Question: How do different surface areas affect bacterial growth? 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…

Kaitlyn Staub Mr. G Biology Honors 4 January 2016 Title The Effect of Different Music Genres on the Growth of the Bacteria Serratia marcescens Introduction Exploring the question of does music affect bacterial growth requires much research. The purpose of answering this question is to figure out how to slow down bacterial growth by music. Also, if needed, the purpose is to figure out how to speed up bacterial growth through music. The hypothesis is that if the bacteria Serratia marcescens…

within the genome. When the F plasmid is integrated into the genome, the host cell has a high frequency of recombination (Hfr). The donor (F+) transfers DNA to the recipient (F-) and is integrated by homologous recombination but remains F-. Cavalli-Sforza and Lederberg showed that the even though the F- and Hfr had a high recombination frequency, it remained F- (Jayaraman, 2011). Bernard Davis performed a U-tube experiment that determined that physical contact between two cells was needed to…

Introduction Gardnerella Vaginalis also known as Bacterial Vaginosis is a bacterial infection normally found in the female’s genital tract [5]. This can cause a female to go through abnormal vaginal odor and discharge. Generally an unpleasant fishy smell with a yellow or white discharge [2]. Garnerella Vaginalis otherwise Bacterial Vaginosis can be contracted through vaginal douching, multiple or new sex partners and intrauterine contraceptive device (IUD). Bacterial Vaginosis is not only…

Cotton increases air flow and decreases moisture buildup, and allow more air to reach your genital area by not wearing underwear at night when you sleep.• Avoid Douching and Hot Tubs Douching may worsen yeast infection symptoms because it removes healthy bacteria that line the vagina that help protect against infection. Hot tubs can also remove healthy bacteria and contribute to yeast infections in the area by encouraging Candida species growth. • Avoid Nonoxynol-9 Products containing…

Allison, 2014). However, though the interaction between human and bacterium is continual, it is not always known what type of bacteria a person is coming into contact with. Therefore it is important to understand, and to have knowledge about, the characteristics of bacteria in our environment. As part of a microbiology lab course, students were assigned to collect and identify an environmental sample down to the genus level. For this particular experiment a skin bacterial sample, taken from the…

bacteria for examination under a microscope. Also learned in this lab were methods on how to inoculate an agar or broth medium, and using aseptic techniques. Lastly, how to use stains to visualize bacterial cells, or distinguish different types of cells from one another through the usage of dye techniques such as the Gram-stain test was learned. II. Prepping/Mounting/Simple Staining Bacterial Cells Procedure: 1. Obtain 3 glass slides that are free of any foreign matter. 2. Place one drop of…

Within a medical setting, a biopsy can be performed and analyzed rapidly without relying on the growth of bacterial cultures. In part one of this experiment, our skills and reagents were tested by following our Gram stain procedure on known species of bacteria. The species tested were Escherichia coli, Bacillus subtilis, Staphylococcus epidermidis, and Moraxella catarrhalis. The second part of our experiment focused on identifying the Gram staining characteristics of an unknown species. Two…