Bacillus

trials the main error was in the second plate where no results could be found for any of the four sections. As can be seen in the photo a small amount of culture did grow around part of the edge of the dish. This means that the error was not due to no Bacillus Subtilis being added to the pour plate. The error could possibly have been not swirling the plate after the agar was poured which would mean…

pesticides and this reduces the farming cost. In India, a survey was conducted on BT cotton fields. According to the survey, a net gain of almost 50 billion Rs (1 billion in USD in cotton profits was made (“Economic Impacts and Impact Dynamics of BT (Bacillus Thuringiensis) Cotton in India”). This shows that the use of BT cotton helps make a lot of profit, using India as an…

`. c. Contrast: Contrast refers to the darkness of the background relative to the specimen `. C. Describe your observations from fresh yogurt slide you prepared in Part III. In the fresh yogurt slide, I could see both cocci and bacillus bacteria, but usually they appeared to occur as a single rod or sphere although there was some diplococcus. `. D. Were there observable differences between your fresh yogurt slide and the prepared yogurt slide? If so, describe them.…

Jones,R.D et al (2000) gave a review of effectiveness and safety in health care settings. Triclosan is a widely accepted antimicrobial ingredient because of its safety and antimicrobial efficacy. Triclosan is a unique antimicrobial well suited for use in the health care industry in which mildness is a necessity to protect the health care worker during repeated use and antimicrobial activity is a necessity to protect public health. Triclosan has demonstrated immediate, persistent, broad-spectrum…

Gram staining is a technique where certain stains are used to identify bacteria. It was discovered in 1884 by Hans Christian Gram where he used stains to differentiate bacterial cells in diseased lung tissue. Gram staining has evolved over time to become a trusted and common diagnostic tool used in clinical and research settings. Gram stains are mainly used to identify unknown bacteria. It is often the first test used on an unknown sample of bacteria. For medicinal uses gram staining is commonly…

high power lens on the microscope, the medium power lens was used resulting in inaccurate data. The drawing magnification was 125 times and the scale bar was 25mm equals 20μm. Lastly , the bacillus was a rod shaped bacteria. The estimated size was 10μm , this estimate was 7.5μm off from the average size of a bacillus. The average was found by addings the different ranges of size (1μm to 4μm) then dividing the sum by two (1+4)/2=2.5. The drawing magnification was 600 times and the scale bar was…

It was used to make the nutrient broth. Then 2g of agar was added to the nutrients and it was dissolved in 100 mL distilled water and used as nutrient agar. The medium was sterilized. Maintenance of Bacterial Culture Bacillus cereus and Pseudomonas aeruginosa were grown on nutrient agar plates and incubated at 370C for 24 hours. The bacterial culture was maintained at 40C and sub cultured routinely to ensure viability of the…

Gram-negative (fig. 3) due to displaying a predominately red color. Bacteria B was found to be Gram-positive (fig. 4) due to displaying a dominate blue color. Bacteria B was also noticeably a rod, or bacillus, shape which helped to further narrow down the possibilities to two bacteria: Bacillus cereus, and Bacillus…

According to the results of this experiment, bacterial and fungal amylase have different optimal temperatures, which suggests that they function in different environments. Bacterial amylase, Bacillus Licheniformis, has an optimal temperature of 55ºC, while fungal amylase, Aspergillus Oryzae, has an optimal temperature between 25ºC and 55ºC, leaning more towards 55ºC. As we can tell from the results, temperature does have an effect on enzyme activity. As predicted, amylase activity increased…

Under 100x magnification – a view of purple rod shaped bacteria/bacilli; some appear as either single rods or paired rods (diplobacillus). Yoghurt prepared – under 40x magnification Yoghurt prepared – under 100x magnification * Fresh yoghurt. Under 40x magnification – a view of loads of bacteria moving about with undefined shapes. Under 100x magnification – an indistinct view of loads of varied bacteria moving about, such as diplococci, streptococci, staphylococci,…