Bacterial Morphology Essay Example for Free

Bacterial Morphology EssayQuestion A and C answers.A wet mount cross is when a drop of water is placed onto the microscope slide. The water on the slide helps to support the organism and sample. The water fills the space between the cover slip and the slide. This satisfy allows the light from the microscope to pass through the slide and the sample for wear out visualization of the organisms. A direct dapple occurs when a charged color portion of a basic color like methylene blue combines with the negatively charged portion of and organism allowing the bacterium to become directly stained. In direct staining, the organisms mustiness be fixed by a process such as heat. Fixing the slide prevents the organism form washing off the slide in front visualization. This is accomplished by passing a calumniate of the bacteria through flame. The heat sets the proteins of the organism thus causing the bacteria to attach to the slide. The organism stack become damaged from the settin g process and the use of heat prior to staining. In indirect staining, the negatively charged colored portion of an acidic dye is repelled by the negatively charged bacterial cell wall. This causes the background to be stained while leaving the organisms cell wall to expect colorless and unstained.Question B answersSpecific bacterial morphologies noted in exercise one come from the spiral bacteria sample. The shape sees to be gyrate in nature and vary in length throughout the sample slide. The length varies save the width seems to be uniform. The color most likely arises from the stain used to allow for better visualization of the organism. The Bacillus sample has no discernible morphology and appears as round ended, and cylindrical shaped in nature. The organisms pick out a black tint which is probably related to the type of statin used for visualization of the organism.Question C Bullet 1The direct smear sample and the indirect smears shown were different in appearance based on the staining method. The Direct Smear stained slides showed that the cells picked up the dye and were stained for better visualization as well as for differentiation of organisms viewed. The Indirect smears showed visualization of organisms and cells unstained and were visually different from the direct smear.Question DThe plaque smears be somewhat throwaway in areas and irregular in other areas. The appearance is unlike the yeast slide. The plaque smear cells appear to contain a discernable nucleus which is absent in the yeast slide. The yeast smear shows uniformity in the shapes and sizes of the sample provided. The plaque smear shows irregularity in shape scarce a significant difference in the size of the sample cells provided.Question EI was unable to obtain an oral swab from my cheek but was able to visualize the slide provided and base my response on it. The cheek smear sample shows cells that are irregular in shape and in size. The cells appear to have a darker center which is located in differing regions from cell to cell. The samples appear to be clustered in together and tightly packed. The plaque smears are circular in areas and are in differing patterns and shape compared to the cheek cells. The plaque smears are round and differ in size. The cheek cells are differing in shapes and packed exclude together.ReferenceHands-on-Labs. (2012). A Laboratory Manual of Small-Scale Experiments for the Independent Study of Microbiology. Englewood, CO. Available from www.labpaq.com