Questions A. Define the following terms: 1. Monotrichous 2. Amphitrichous 3. Lophotrichous 4. Peritrichous B. What are the three commonly used techniques to test motility? C. Why are semi-solid media used to test for motility? D. Why might it be difficult to observe motility in a wet mount? E. Why is it important to use a needle rather than an inoculating loop when inoculating a motility tube? F. For which of the organisms on the wet mount‚ if any‚ were you able to observe motility? G
Premium Bacteria Eukaryote Metabolism
Bonnie Bassler claims that bacteria although simple have complex systems that they use to communicate with each other to coordinate. This is crucial to humans because Dr. Bassler considers humans to be 90-99% bacterial. Dr. Bassler states we have about one trillion human cells but we have about 10 trillion bacterial cells that either live in or on humans. The number of bacterial genes in those cells outnumber humans by 100 times since humans only have 30‚000 genes. These bacteria share a mutualistic
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
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
Louis Pasteur was a pioneer of immunology. He was born in 1822. He grew up in the city of Dole‚ France. When he was young most of his teachers felt that he was slow and that advancing his education was not what the future held for him. His father was a leather tanner. His teachers felt that he should carry on that trade. He however had one teacher that believed in him. He then advanced his education and studies on to Paris‚ France. Louis Pasteur was an extraordinary man. While advancing his
Premium Bacteria Microbiology Infectious disease
In her Ted Talk‚ Maryn McKenna illustrates the danger that humanity was in before the rise of antibiotics‚ and the future risks that will arise if further intervention on antibiotic resistance is not done. She describes that in the past‚ before penicillin was discovered by Alexander Fleming‚ infections were the primary cause of death and most people did not live past the age of forty. Once antibiotics were discovered‚ they functioned as a panacea‚ saving people from injuries and infections and allowed
Premium Bacteria Antibiotic resistance Infectious disease
University of Phoenix Material Appendix B – Identifying Bacteria Bacteria identification is accomplished in a number of ways. Two common tools microbiologists use to identify unknown bacteria include dichotomous key and biochemical tests. The dichotomous key is useful when a microbiologist only needs to know which group an unknown microbe belongs to on a general level. When a microbiologist needs to identify a specific bacterium‚ biochemical tests are used. PART ONE: GENERAL BACTERIA IDENTIFICATION
Premium Bacteria Microbiology Gram staining
Jody Kaur Pure Cultures Lab 1/31/13 Introduction : Pure cultures are made of only one type of organisms and can be used to study their properties. A method used to isolate pure cultures is making a steak-plate‚ which is a dilution process in which culture is spread over an agar plate in a certain manner. Using a loop rod‚ culture was taken from the tube and dragged across area 1 several time‚of the agar. The agar was then turned 90º‚ and the loop was flamed and cooled. Taking some culture
Premium Bacteria Microorganism Microbiology
Microbiology 20 Laboratory Final Exam Guidelines The laboratory exam will be given on Tuesday December 4th (sections 0375 and 3252) or Thursday December 6th (section 3253) and consist of an open book portion given in CMS 105 followed by a practical portion (closed book) to be given in the lab (CMS 002). You will not need a Scantron. For the open book test‚ be sure to bring any resources you may need including your lab manual‚ lab notebook‚ safety guidelines and handouts. For the practical portion
Premium Bacteria Microbiology Metabolism
Any species of bacteria can turn into a superbug. A superbug is a strain of bacteria that is resistant to antibiotics. According to webmd.com "Every year‚ about 2 million people get sick from a superbug‚ according to the CDC. About 23‚000 die. Earlier this year‚ an outbreak of CRE (carbapenem-resistant enterobacteriaceae) linked to contaminated medical tools sickened 11 people at two Los-Angeles area hospitals. Two people died‚ and more than 200 others may have been exposed." This has become a serious
Premium Bacteria Antibiotic resistance Penicillin