Aseptic Technique & Culturing Microbes Questions A. What is the difference between a bactericidal and bacteriostatic agent? What is the difference between sterilization and disinfection? Control of growth refers to the prevention of growth of microorganisms. This control is affected in two basic ways: by killing microorganisms or by inhibiting the growth of microorganisms
Premium Bacteria Microbiology
Gram Positive Unknown: “Enterococcus faecalis” Family: enterococcaceae Genus: enterococcus Species: faecalis Gram + Oxygen class: facultative anaerobe Temperature class: mesophile – they can grow in the range of 10 °C - 45 °C pH class: can grow at a pH range of (4.6 – 9.9) with the optimum at 7.5 Enterococci can survive very harsh environments including extreme alkaline pH 9.6 and salt concentrations (basic). Environment: They can
Premium Bacteria Urinary tract infection Escherichia coli
Pathogen Project #7 Salmonella 1) What type of microbe: G - bacterium 2) What is the natural habitat of your pathogen‚ that is‚ where does it reproduce or what is the reservoir? Animals are the main reservoir for Salmonella. It also lives on eggs‚ raw meats‚ unpasteurized milk‚ fruits‚ and vegetables. 3) What disease it causes – that is‚ the MAIN disease it causes: The primary disease Salmonella causes is gastroenteritis. Gastroenteritis causes bloating‚ abdominal cramping and most commonly
Premium Bacteria Immune system Microbiology
In medical facilities it is necessary to equips materials and surfaces with a high level of hygiene using antimicrobial agents to protect them against bacteria and other micro organisms to prevent infections caused by bacteria and contribute significantly to reduce health costs. Benefits of nanoscale coatings in this sector include long lasting antimicrobial effect‚ constant release of the active substance‚ effectiveness against bacteria and other micro-organisms‚ no chemical impurities‚ easy processing
Premium Microbiology Antibiotic resistance Nanotechnology
ASSAYING PLANT SUBSTANCES FOR ANTIBACTERIAL ACTIVITY PURPOSE To test plant extracts to see if they possess antibacterial activity. PROCEDURE First create a list of plant extracts being tested and choose 2 extracts per group. The plants being tested are Oregano‚ Tea tree‚ Eucalyptus and Colloidal Silver. Obtain two nutrient agar plates and using a permanent marker draw four quadrants on the bottom of each agar plate. Using a sterile pipet transfer 250 ml of E. coli broth to the middle of
Premium Bacteria Microbiology Escherichia coli
Haemophilus influenza By Crystal Wade BL 202 A Dr. Kokan 11/10/2012 Haemophilus influenza is a gram negative rod shaped bacterium; it is a member of the pasteurellaceae family. It is aerobic but it can grow as a facultative anaerobe. From 1852 to 1933 H. influenza was thought to be the cause of influenza until its etiology was done and they discovered that it was really bacterial influenza that caused it. H. influenza does cause many other diseases. It states on Wikipedia that “H. influenza
Premium Bacteria Infection Haemophilus influenzae
In September 1928‚ Fleming returned to his laboratory after a month away with his family‚ and noticed that a culture of Staphylococcus aureus he had left out had become contaminated with a mold (later identified as Penicillium notatum). He also discovered that the colonies of staphylococci surrounding this mold had been destroyed. He later said of the incident‚ "When I woke up just after dawn on September 28‚ 1928‚ I certainly didn’t plan to revolutionize all medicine by discovering the world’s
Premium Bacteria Penicillin Antibiotic
Dannon Company has a trademark of Activia in its products. One of its products is the Light and Fit yoghurt. The light and fit comes in variety of flavors‚ raspberry‚ banana and strawberry just to name a few‚ with no artificial color and a natural touch. This product is advertised to be multi- functional with its great works with women’s gastrointestinal hygiene and beauty. The product is said to bring about what people want from any food supply. The company is mostly targeting young ladies‚ middle
Premium Bacteria Microbiology Nutrition
INTRODUCTION The Gram Negative lab had two parts; the aim of the first part is to determine the concentration of gram negative bacteria in a water sample collected from a creek near Providence Road‚ Strickling. Gram negative bacteria have a cytoplasmic membrane‚ a thin peptidoglycan layer‚ and an additional outer membrane composed of phospholipids and lipopolysaccharides. Because gram negative bacteria have a relatively thin cell wall when compared to gram positive organisms‚ they are consequently
Premium Escherichia coli Bacteria Microbiology
Modeling bacterial growth is important in maximizing the efficiencies of biological processes. Although there are many different methods of modeling bacterial growth‚ this experiment focuses on the Monod equations. However‚ in order to use the Monod equations‚ the maximum growth rate and Monod constant must be found. Here we show how the maximum growth rate and Monod constants can be obtained for Escherichia coli using M9 media in a bioreactor at 37 °C and 500 RPM. The maximum growth rate is also
Premium DNA Bacteria Gene