Preview

E Coli Lab Report Results

Good Essays
Open Document
Open Document
230 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
E Coli Lab Report Results
Through the experiment, it was revealed that e.coli is killed the most under a strong acid with a ph of 1 . For the pH of 1 the diameter of e.coli killed was an average(of three trials) of 20. 95 mm. However, the strong base pH of 13 also killed a lot of e.coli with an average diameter of 14. 95 mm. For the ph level of 3 and 5 the diameter of e.coli killed was 9.23 mm and 10.65 mm. For the acidic pH’s that were not a pH of 1, there was a similar effect between them but nowhere close to the average diameter of a pH of 1. The basic pH’s (excluding 13) results were showcased with the pH of 9 and 11 average diameter being 15. 89 mm and 6.11 mm respectively. There is no relationship or even closeness in number whatsoever with the basic
Continue Reading
View Writing Issues

You May Also Find These Documents Helpful

  • Powerful Essays

    Bacterial Activity Lab Report
    • 939 Words
    • 4 Pages

    Bacterial Activity Lab Report

    The results show that tea tree and eucalyptus have about the same antibacterial activity as the positive control (ampicillin) used in this experiment. Oregano and colloidal silver’s zone of inhibition were closer to h2O, which concludes that at the amount used for both there is no antibacterial…

    • 939 Words
    • 4 Pages
    Powerful Essays
    Read More
  • Good Essays

    AP Bio Chapter 2- Basic Chemistry
    • 1207 Words
    • 12 Pages

    AP Bio Chapter 2- Basic Chemistry

    pH < 7 Basic solutions = pH > 7 • Most biological fluids have pH 6 – 8 – pH values in human stomach can reach 2 • Each pH unit represents a 10-fold difference in H+ & OH- concentrations. Acids and bases • Acids – release H+ ions in water • Bases -- release OH- ions in water • pH is a measure of hydrogen ion (H+) concentration – Lower pH – acidic – Higher pH basic – pH is logarithmic – a difference of 1 (from pH 4 to 5) is actually a ten-fold increase in H+ conc. • From 3 to 7?…

    • 1207 Words
    • 12 Pages
    Good Essays
    Read More
  • Better Essays

    Microbiology Unknowns Lab Report
    • 1370 Words
    • 6 Pages

    Microbiology Unknowns Lab Report

    In this lab experiment we did several test to determine what our unknown bacteria was. To determine this we recorded the results of how the bacteria reacted to different media. Depending on the results of each test we could narrow down the different bacteria to determine what our unknown is. This experiment will also determine if our bacteria is a fermenter of sugars and if it is catalase positive. If the bacteria is a fermenter they will use the sugars to make ATP. If the bacteria is a fermenter of lactose/sucrose the EMB plate we used will “clearly differentiate between the colonies of lactose fermenting and non-fermenting microbes. In the same medium sucrose was also included to differentiate between coliforms that were able to ferment sucrose more rapidly than those that were unable to ferment sucrose” (Cheeptham & Lal, 2007).…

    • 1370 Words
    • 6 Pages
    Better Essays
    Read More
  • Good Essays

    African Toddlers Lab Report
    • 447 Words
    • 2 Pages

    African Toddlers Lab Report

    The initial pH level starts at 6.90 and gradually decreases over the observation period, reaching 7.19 by day…

    • 447 Words
    • 2 Pages
    Good Essays
    Read More
  • Powerful Essays

    Studying the pH of Strong Acid, Weak Acid, Salt, and Buffer Solutions
    • 1669 Words
    • 6 Pages

    Studying the pH of Strong Acid, Weak Acid, Salt, and Buffer Solutions

    The purpose of the current experiment was to determine the pH of various hydrochloric acid and acetic acid solutions, to determine the pH of various salt solutions, to prepare a buffer solution, and determine the effects of adding a strong acid and strong base to the buffer solution versus adding a strong acid and strong base to water. The measured pHs for the hydrochloric acid solutions were 1.6, 2.2, 2.9, and 3.8. The measured pHs for the acetic acid solutions were 2.9, 3.9, 4.2, and 4.4. The pHs measured for the salts were 4.3 for sodium chloride, 7.3 for sodium acetate, 8.9 for sodium bicarbonate, 10.8 for sodium carbonate, 7.9 for ammonium chloride, and 6.9 for ammonium acetate. The pH for the buffer solution and the strong acid was 3.9 and the pH for the buffer solution and the strong base was 11.6. The pH of water with the strong acid added was 3.44 and the pH of water with the strong base added was 13.4…

    • 1669 Words
    • 6 Pages
    Powerful Essays
    Read More
  • Good Essays

    Unknown Lab Report for Microbiology
    • 481 Words
    • 2 Pages

    Unknown Lab Report for Microbiology

    There are many reasons for identifying an unknown bacterium. The reasons range from medical purposes, such as determining if the unknown could cause ailments in living things or knowing what microorganisms are needed to make antibiotics to other purposes such as knowing the exact microorganism has to be used to make certain foods. This experiment was done by applying methods in order to identify an unknown bacterium.…

    • 481 Words
    • 2 Pages
    Good Essays
    Read More
  • Good Essays

    E Faecalis Lab Report
    • 1262 Words
    • 6 Pages

    E Faecalis Lab Report

    In the experiment involving varying pH levels, E. faecalis, S. epidermidis, L. lactis, and L. casei were subjected to different pH levels and then were allowed to incubate in order to determine the minimum, maximum, and optimum pH levels for growth of specific bacterial species. It was found that lower pH levels between 2 and 4 inhibited or promoted little to no growth for E. faecalis, S. epidermidis, and L. casei. It is evident that these bacteria were resistant to alkaline environments, however, it should be noted that certain mechanisms must have been acquired or involved in maintaining equilibrium within the bacterial cell. High alkalinity generally leads to physiological problems within microbes including the disruption of plasma membrane…

    • 1262 Words
    • 6 Pages
    Good Essays
    Read More
  • Good Essays

    Unknown Bacteria Lab Report
    • 1467 Words
    • 6 Pages

    Unknown Bacteria Lab Report

    The purpose to this lab was to isolate and identify two unknown bacteria from a mixed culture provided to us by our instructor. This study was done by applying all of the methods that have been instructed on thus far in microbiology laboratory class. Each test performed, provided us with some key information about the unknown microbes in question and how the bacteria function.…

    • 1467 Words
    • 6 Pages
    Good Essays
    Read More
  • Good Essays

    Unknown Bacteria Lab Report
    • 629 Words
    • 3 Pages

    Unknown Bacteria Lab Report

    On the first day, one plate was streaked qualitatively and left it in the 25 degrees celsius incubator over five days and attempted to gram stain from the test tube. On the second day, took out my plate from the incubator and examined the plate for bacteria. Then, three more plates where streaked qualitatively and placed…

    • 629 Words
    • 3 Pages
    Good Essays
    Read More
  • Better Essays

    Unknown Microbiology Lab Report
    • 1118 Words
    • 5 Pages

    Unknown Microbiology Lab Report

    Nester, Eugene W., et al. Microbiology A Human Perspective. Sixth Edition. Mc Graw-Hill Companies 2009.…

    • 1118 Words
    • 5 Pages
    Better Essays
    Read More
  • Satisfactory Essays

    Microbiology Unit 20 Lab Report
    • 371 Words
    • 2 Pages

    Microbiology Unit 20 Lab Report

    The laboratory exam will be given on Tuesday December 4th (sections 0375 and 3252) or…

    • 371 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Good Essays

    Microbiology Unknown Lab Report
    • 2393 Words
    • 10 Pages

    Microbiology Unknown Lab Report

    3. What color is the EMB agar? Dark blue colonies with green metallic sheen or pink.…

    • 2393 Words
    • 10 Pages
    Good Essays
    Read More
  • Satisfactory Essays

    Bacteria Lab Write-Up
    • 740 Words
    • 2 Pages

    Bacteria Lab Write-Up

    Purpose: The purpose of this lab is to find out which substance, alcohol, antibacterial soap, water, or hydrogen peroxide, is the best at preventing the growth of bacteria.…

    • 740 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Good Essays

    Lab Result
    • 1068 Words
    • 5 Pages

    Lab Result

    As the lead homicide investigator for this case I had recently learned that the crime lab has concluded that the finger print that was recovered belonged to the boyfriend, they were from a piece of notebook paper found under the body of the victim. Interviews are conducted in criminal cases for the purpose of gathering information from people who have, or may have, knowledge needed in the investigation. (Swanson, Chamelin, Territo & Taylor, 2012) However with the information that was recently learned from the evidence that was collected and analyzed by the crime lab, the interview with the boyfriend would now be conducted as an interrogation. Interrogation as opposed to interviewing is designed to match acquired information to a particular suspect in order to secure a confession; it is the process of testing that information and its application to a particular suspect. By means of interrogation we would be able to eliminate the innocent or identify the guilty. (Swanson, Chamelin, Territo & Taylor, 2012)…

    • 1068 Words
    • 5 Pages
    Good Essays
    Read More
  • Good Essays

    Lab Results Fermenter
    • 1161 Words
    • 5 Pages

    Lab Results Fermenter

    To determine the amount of anti-microbial peptide production by Staphylococcus warneri under various conditions when 2L and 10L Fermented.…

    • 1161 Words
    • 5 Pages
    Good Essays
    Read More

Related Topics