Lab Report - Microbes Aim: To investigate four areas of the school and to find out which of the four have the most microbes. Areas to Sample: 1. Girl’s locker room (Senior school) 2. Girl’s locker room (Elementary school) 3. Boy’s locker room (Senior school) 4. Boy’s locker room (Elementary school) Hypothesis: We predict that the boy’s locker room in the senior school will have the most microbes. First of all‚ there are more people using our locker rooms in the Senior School
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ABSTRACT Nature has been a source of medicinal agents for thousands of years and an impressive number of modern drugs have been isolated from natural sources Plants used for traditional medicine contain a wide range of substances that can be used to treat chronic as well as infectious diseases. Clinical microbiologists have great interest in screening of plants for antimicrobial activities and phytochemicals as potential new therapeutics. The use of plant extract for medical treatments is enjoying
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Experimental Design I. Objectives: a. to define diffusion and demonstrate this process in gases b. to cite molecular weight and time as two factors affecting the rate of diffusion c. to formulate a hypothesis on the relationship of each of these factors on the rate of diffusion d. to conduct and experiment to determine the effects of the two factors on the rate of diffusion e. to compute the partial rate and average rate of diffusion f. to conclude on the relationships of molecular
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Osmosis and diffusion are two ways that cells reach this equilibrium‚ without exerting energy. Due to the unique nature of the phospholipid bilayer‚ small molecules can pass through the semipermeable membrane easily‚ through diffusion (https://www.biologycorner.com). Water‚ however‚ has a slightly more difficult time diffusing‚ and diffuses in a different way‚ called osmosis. Osmosis involves aquaporins‚ specialized proteins in the phospholipid bilayer‚ to facilitate the diffusion of water across
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study. Also due to the changing patterns of resistance in other bacteria to antibacterial agents‚ sensitivity studies are essential. Clinically‚ the agar diffusion method is commonly used. The organism can be reported as being sensitive‚ intermediate or resistant to an antibiotic. Sensitivity depends on the growth characteristics of the organism and diffusion characteristics of the antibiotic. Some common antibiotics used include; GRAM POSITIVE GRAM NEGATIVE Coltrimoxazole
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volume ratio. As the surface area of the Agar cube increases‚ the rate of conductivity will steadily increase‚ too. The trend line of the graph shows as an exponential graph because at one point there will be no more conductivity due to too small or too big Agar cubes. A difference can be seen in the average rate of conductivity depending on surface area because the Agar cubes with a larger total surface area are able to diffuse the ions faster. When the Agar cube has larger surface area‚ more area
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Buffers‚ and pH‚ and Diffusion oh my The pH of a solution is the measure of the concentration of charged Hydrogen ions in that given solution. A solution with a pH lower than seven is considered to be acidic. A solution with a higher pH is a base. It is very important for organisms to maintain a stable pH. Biological molecules such as proteins function only at a certain pH level and any changes in pH can result in them not functioning properly. To maintain these constant pH levels‚ buffer solutions
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References: 2. National Committee for Clinical Laboratory Standards (NCCLS)‚ Disk Diffusion Supplemental Tables. NCCLS Document M100-S13 (M2)‚ Wayne‚ PA‚ 2003. 3. Bangroo A.K.‚ Ramji K.‚ Smita C.: Honey dressing in paediatric burns. J. Indian Association Paediatric Surgeons‚ 10: 172-5‚ 2005. 4. Molan P.C.: Honey as a topical antibacterial
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be used in this lab to detect nature of the antibody interaction. The orientations of the band will provide more information about the interaction of antibody and antigen. Hypothesis: For this experiment‚ antibodies will be placed in wells on an agar plate‚ surrounded by wells containing serum (proteins‚ antigens etc.). If the antibody interacts with the antigen of surrounding wells‚ then the presence
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Equipment: * 3 agar plates * Blank discs * Antibiotic assay disc * Culture of Bacillus subtilis * Forceps * Bunsen Burner * Inoculating loop * Tea Tree oil * Heat Mat Method: First Agar Plate * Sterilise inoculating loop using Bunsen burner‚ allow inoculating loop to cool before using inoculating loop to pick up‚ the liquid of the culture. * Agar plate to be open as little as possible‚ minimising
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