Staining

Prevent It Many people desire having a perfect smile because great teeth are what make a great first impression. Unfortunately, stained teeth are a problem that can happen to anybody if they aren’t careful. These are 5 ways you can prevent teeth staining from happening to you. Rinse Out Your Mouth After Eating Foods and beverages that are darker in color, such as berries and tomato sauce, are not always avoidable. These are the foods that can cause your teeth to become stained over time if you

NUMBER TWO DATE: 3/25/2010 inal attachment Lab Experiment number 11  PURPOSE: To learn the Gram stain technique, the reason for the stain, and how to identify the results of the organisms stained.  MATERIALS: Bunsen burner, inoculating loop, staining tray, glass slides, bibulous paper, lens paper, oil, and microscope  METHODS: Apply Crystal Violet (Primary stain) for 1 minute. Rinse with D-water Apply Iodine (Mordant) for 1 minute. Rinse with D-water. Apply Alcohol (Decolorize) for 30 seconds

biochemical tests. After preparing a working plate, a Gram staining test, a catalase test, and a RBC hemolysis test were done for the identification. The Gram staining resulted in the unknown bacteria being a Gram-positive coccus because of the blue coloration and a spherical shape under the microscope. The catalase test was negative because the bacteria did not utilize catalase to breakdown H2O2. The blood agar used for RBC

3 Medications That Can Cause Teeth Staining Most people know that smoking, drinking coffee, and eating acidic food can cause teeth staining, but were you aware that medication can cause it as well? Here are three medications that may be causing unexpected teeth staining, and how to correct the problem. Antihistamines People that have allergies can depend on antihistamines to give them relief. However, the drug may be detrimental to the color of your teeth. Antihistamines can actually cause your teeth

for their shape or multicell arrangement, but cannot be truly identified by just those characteristics (Strelkauskas, Edwards, Fanhert, Pryor, 2016). Bacteria can be classified by the way they stain. They are clear under a microscope and require staining to be seen. To stain a bacteria, one takes a dye to color the cells. There are basic dyes that contain

screening of infectious agents in clinical specimens such as direct smears from a patient. Isolation, gram staining and identification of the micro-organism is a basic diagnostic tool in clinical as well as in research. This method is useful in diagnosis and treatment of diseases. The gram staining is simple, least expensive and is rapid. It is useful in counting of total bacteria. Because of the staining, the gram positive and negative bacteria can be viewed under the microscope. The shape, size can be

Title: Title of lab/experiment. Your name and the names of any lab partners. Your teacher's name. The date the lab was performed or the date the report was submitted. The title says what you did. It should be brief (aim for ten words or less) and describe the main point of the experiment or investigation. Lab Question: How can lichen indicate the quality of its environment? Hypothesis: If dyed lichen is exposed to certain chemicals, than color will color the solution. Materials: Test tubes Distilled

organisms, a four-way streak plate technique was used to isolate the two unknown bacteria into separate visible colonies. Then after each colony were clearly isolated; the two unknowns were processed through Gram staining test to determine the Gram stain and morphology. After Gram staining, a carbohydrate test was performed on each unknown to determine if it had glucose, sucrose, or lactose fermentation. The results of the sugar test help determining which biochemical test should be performed next

Catalase Test A catalase test, tests for the presence of the enzyme catalase, which is based on the ability of a bacteria to convert hydrogen peroxide to water and oxygen gas. The catalase test is primarily used for gram positive bacteria and can be utilized to distinguish Staphylococcus and Micrococcus, which are catalase positive from Streptococcus and Enterococcus, which are catalase negative. Process Step 1. Prepare a slide with the positive culture results by transferring the sample to be

1.What are the advantages and disadvantages of the different types of light and electron microscopes discussed in Chapter 3 that are used to study microorganisms? Focus your response in terms of the following parameters: ◦Range of magnification ◦Resolving ability ◦Sample preparation ◦Possible states of sample (e.g. whole organism, part of, living, non-living, etc.) 2.What type of microscope would you use to investigate each of the following scenarios and why (your answer to question 1 will