Very few microorganisms are capable of, both, growing on the halophilic medium and fermenting mannitol; thus, the genus Lactococcus was eliminated…
1. (4 points) The results below were obtained from a use-dilution test of two disinfectants. Cultures were inoculated into tubes with varying concentrations of disinfectants and incubated for 24 hr at 20°C, then subculture in nutrient media without disinfectants. (+ = growth; - = no growth) Disinfectant 1 Disinfectant 2 Concentration Initial Subculture Initial Subculture…
These daphnid cultures were fed 2 mL of algae (Selenastrum capricornutum) containing 3.0 x 107 cells per mL on Monday, Wednesday, and Friday. The water was changed every Friday. Once a month, 1 mL of a yeast and trout chow…
During the phase and process of the bacterial unknown project, vast amounts of test were performed in order to determine an unknown species of bacteria. Within the many procedures of identifying the unknown bacteria, I was first given a tube with the unknown bacteria, from which later on I started subcultures by streaking bacteria from the original tube onto a tryptic soy agar (TSA) slant. Throughout the process of identifying the unknown, new subcultures were produced in order to use the newest bacteria to conduct the tests. Thus, this process allowed the unknown bacteria to grow and maintain. Before a series of test were conducted, first a gram stain test was performed in order to determine the unknown’s gram reaction and its cell morphology.…
Biochemical Unknown I. Introduction Cultural Characteristics or morphology and biochemical tests can be used to identify and classify microorganism. By culturing microorganism in nutrient broth, slants, and on nutrient agar plates, the cultural characteristics or morphology can be determined. In this lab, the test tube 2 was incubated in a nutrient broth. The pigmentation of the tube was yellow. The media for test tube 2 was turbid.…
An increased capacity for anaerobic respiration is seen as the defining factor between tolerant and nontolerant species. H.ocellatum is at this point the most successful tropical species in relation to its levels of hypoxia tolerance and it is hoped that the examination of this tropical hypoxic tolerance may help to uncover the biologic mechanisms underlying hypoxia tolerance as a whole. {2B} H.ocellatum under blood-lactate concentration analysis has been seen to have a baseline…
A small amount of the bacteria was placed in to three diverse tubes, which had different carbohydrates. The bacteria produced acid and gas when placed in the tubes that had glucose, lactose and sucrose, however when placed in the tube of sucrose, acid was shown on the inside of the anaerobic part of the tube which caused no acid to be on the outside. The results given are typical for the E.coli carbohydrate fermentation. The last and final test that was done was a streak plate. After placing my bacteria was placed on an agar plate and endeavoring to isolate it, I was able to receive individual colonies and showed countable colony-forming units.…
Ciaccio looked over his files, researching his new clients. What he found did not impress him. Hostia Bontade was a young man who was, apparently very active in the black market. Well, at least he had quite a bit of money, as he was an heir to a powerful sicilian familia, and a lack of wits of accompany them, shown by the very obvious tracks he left behind his lawless undertakings. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ “You can cheat him out of his wits,” smiled Beelze.…
The Gross Clinic is a painting done by Thomas Eakins, an American realist painter, who also dabbled in photography. Eakins is widely acknowledged to be one of the most important artists in American art history. Throughout Eakins career he had difficulties with the public and critics. The Gross Clinic, 1875 is an oil on canvas, 96" x 77" and was rejected by the art jury for the exhibition in Philadelphia, because it was too brutally realistic. The painting illustrates the prominent surgeon Dr. Samuel Gross conducting a surgery in the operating amphitheater of the Jefferson Medical College in Philadelphia.…
The Anasazi as they are now known were an advanced Native American culture found in the Southwestern United States. The word Anasazi Is derived from a Navajo Indian term which roughly translates into two separate terms the first of which speaks to a very likely adversarial relationship with neighboring tribes “The ancient Enemy” the second of which is a great deal less ominous and is merely “The ancient Ones”. Both are fitting names as Anasazi culture is thought to date as far back as far as 1200 B.C (1), with groups of precedent day Native Americans claiming descendants from them. At the height of their civilization Anasazi Villages or Pueblos as they are now called from the Spanish word for village could be found all across the…
Introduction: Over the course of about a week, I ran and studied a lab that represents the ecology of life with bacteria. To test how the ecology of life works, we measured and reviewed the growth of bacteria after washing one’s hands at different intervals of time. After washing our hands four times in 30 second intervals, we wiped a finger on a different segment of an Agar plate where our bacteria would have a strong environment to grow and develop.…
The bacteria used in the experiment are Escherichia coli, Pseudomonas aeruginosa, Proteus vulgaris, Klebsiella pneumoniae, and Salmonella pneumonia. These all bacteria will be culture in the nutrient broth. The first stage is making Nutrient Broth. Weigh out 5.8 grams of nutrient broth powder.…
Determining The Process of Photosynthesis And Cellular Respiration Using Elodea and Yeast Introduction Photosynthesis is an essential process to life on earth, in which plants and other organisms use sunlight to create food from oxygen, and carbon dioxide. Cellular respiration is when energy in food is released and converted to ATP, which is then used as chemical energy to complete tasks within a cell. This process usually requires oxygen and releases carbon dioxide. Photosynthesis and cellular respiration are similar in some areas and different in others. The purpose of both of the process is to produce energy, but they have different ways of achieving this goal.…
https://www.youtube.com/watch?v=8OQSzDg-5CI&feature=youtu.be In his podcast, Eric Metaxas interviews Morgan Freedom (along with producers Lori McCeary and James Younger) about the reason behind why he created a show about world religions. The National Geographic Channel will air the show, and it is called, “The Story of God.” The core of the show is to let people see how all religions are “basically” getting at the same thing. Even though the other producers are there for the interview, and speak a little during it; Metaxas spends majority of his time speaking to Morgan Freeman.…
We determined that the UV light treatment was the most potent treatment of mutagenesis and also the most effective in inducing mutations, followed by the Tn5 and the EMS was the least potent and effective treatment. Introduction A culture of E.coli K12, KL14 was used to carry out the experiment on. The advantage of using E.coli cells to experiment on is that they are haploid organisms and contain a single set of chromosomes so if a mutation was to occur, the bacterial cell will express it as there is only one copy of the gene. We experimented on various types of mutations.…