keep other things the same‚ for example the washing time had to be the same for both‚ you called the washing time a _Control_______ variable. Through the semester‚ you have used two bacteria that produce colorful colonies: one produce yellow colonies‚ another one pink. What are the names of these two bacteria? Are they Gram+ or Gram-? Micrococcus Luteus‚ yellow colonies‚ gram + Serratia Marcescens‚ pink colonies‚ gram - There was one bacterial
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Microbes are diverse– protozoa‚ bacteria‚ fungi and microscopic plants viruses‚ viroids and also prions that are proteinacious infectious agents. Some of the microbes are shown in Figures 10.1 and 10.2. Microbes like bacteria and many fungi can be grown on nutritive media to form colonies (Figure 10.3)‚ that can be seen with the naked eyes. Such cultures are useful in studies on micro-organisms. BIOLOGY (a) (b) (a) (b) (c) (c) Figure10.1 Bacteria: (a) Rod-shaped‚ magnified 1500X
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4.5 DISCUSSION The bioluminescent bacteria grow well and produce good glowing in the SWC agar media compared to the LA agar media. In LA agar media‚ the production of light was very deem. It also took much time to solidify and the agar media was too soft and forms hole‚ therefore good streaking couldn’t be done. There might be error in the composition of the LA agar media ingredients. However‚ when SWC agar media used‚ there was good growth of bacteria and bright production of light. When comparing
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applied to the bacteria‚ then the zone of inhibition will be larger. Background: The purpose of this lab was to see how effective a certain antibiotic is to kill E coli. The lab tested three antibiotics‚ Penicillin‚ Erythromycin‚ and Neomycin. The zone of inhibition‚ which is the amount of space the antibiotic kills in certain amount of time‚ determined how effective the antibiotic was on that certain bacteria. Control: Quadrant 4 with no antibiotic Constants: Temperature‚ bacteria‚ Petri dish‚
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Cause and spread of infection 1.1. Identify the differences between bacteria‚ viruses‚ fungi and parasites All 4 are different types of pathogens Bacteria is a single celled organism that multiply by themselves. They lives within and on most living and nonliving things. The majority of bacteria’s are harmless and beneficial to the human body but some can cause infectious diseases. A bacterium usually affects one part of the body and doesn’t spread across or through the body. Bacterial infections
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gradient). Clostridium and other anaerobic bacteria dominate under anaerobic conditions at the bottom. Cellulose from the paper into glucose and that would be a trigger for the bacteria (Clostridium) to take in the glucose and partially break it down by fermentation to gain energy and to produce ethanol and organic acids as by-products. The by-products from Clostridium feed into other bacteria nearby in the deep mud of the column. Desulfovibrio bacteria use these organic molecules as carbon sources
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result of overuse‚ misuse‚ and abuse‚ antibiotics‚ once hailed as the savior of mankind‚ are an increasing threat as bacteria grow ever stronger. (Bunyard) The development of antibiotic-resistant bacteria poses a looming threat to the medical industry and to society. A quick look into modern newspapers or journals would reveal startling reports about antibiotic-resistant bacteria‚ also known as superbugs‚ and how devastating their emergence could potentially be. (Ed. Bonomo and Ed. Tolmasky) Worldwide
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differences between bacteria‚ viruses‚ fungi and parasites. Bacteria – bacteria are extremely small singular organisms which are found almost everywhere. Viruses – it is a coated genetic material that invades cells and use’s the cells apparatus for reproduction. Fungi – it is a multi-celled living organism Parasites – they are types of living plants and animals that derive benefit from the metabolism of other animals and plants. 1.2 Identify common illnesses and infections caused by bacteria‚ viruses‚ fungi
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growth of bacteria and fungi. Aim: our aim was to see weather or not garlic‚ mint and grass contained antimicrobial properties and if they did how effective they were we were trying to see weather the bacteria will grow around the different plants. Control Test: As a control test what we did was‚ we dipped a paper disc into the alcohol solution we used to dissolve the plants; the reason we did this was to test to see weather or not the alcohol would affect the end result. If bacteria grew around
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positive charge‚ which is a strong ion-pair with the polymer will inhibit the antibacterial activity because it will prevent the polymer from interacting with the bacteria. Also‚ the ions that prevention generation ion-pair‚ it has a positive effect on antibacterial activity because it allows the polymer to interact freely with the bacteria [31] [50].” 2.3. 3 Spacer Length or Alkyl Chain Length “The length of the spacing or length of the alkyl chain indicates the length of the carbon chain that is the
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