My hypothesis for this research project is that the longer the sugary material stays on teeth, the greater the growth of bacteria is in the mouth. To test my hypothesis, I designed and ran an experiment using sucrose to test for the bacterial growth in the mouth.
To do this experiment blood agar plates, sterile forceps, mouth wash, candy, and swab sticks were used in this experiment. I used blood agar plates because “blood agar is an enriched medium that supports the growth of fastidious microbes, because many pathogen including S.Mutan have special dietary needs. Blood agar contains extra nutrients such as whole blood, blood serum, certain vitamins, sugar and amino acid as mentioned in Medical microbiology lab manual written by our own faculty member
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My results of the baseline indicated that even right after brushing, flossing and rinsing my mouth there is still bacteria present in large amount and every hour it increased. With my own mouth’s bacteria there is also contamination (the white spots) which is also bacterial growth. The agar plate might have been contaminated during the experiment. It might have been contaminated from the swab sticks, breathing, or sneezing.
The results of my saliva and candy shows that bacteria in my increased rapidly every hour this is because S. mutans likes to feed on sugary food and this bacteria alone can’t do harm to the tooth but the specialty of S.mutans is that it produces lactic acid which erodes the enamel of the tooth causing tooth decay.
Now we know many cause of cavities. Now let’s look at the long term effect of gum disease. Which are gingivitis, periodontal disease and tooth loss. Gingivitis is a mild form of gum diseases. The longer plaque remains on the teeth, the more harmful it becomes. As you can see in the picture, the bacteria on the gum line cause inflammation of the
Identification of bacteria within Unknown Culture #21 In this experiment, an unknown culture of two different types of bacteria was assigned to each person, a number of tests were performed to isolate and identify these bacterial cells. Based on knowledge from the previous experiments completed in lab, a basic understanding of each type of bacteria was used to create a flow chart that would aid the process of identifying the unknown bacteria within the culture. A gram stain that is performed initially will narrow down the types of tests certain bacteria will and will not respond to. In addition to the gram stain, some of the tests that were used include, a catalase test, an Eosin methylene blue (EMB) agar test, a bile esculin test, and a 6.5% sodium chloride (NaCl) test.
Buggin’ Out (Buggy Lab) Purpose - To determine the motion of a battery powered buggy & use the data to determine when the two buggies would collide. Data - Position (m) Displacement (m) Time 1 (s) Time 2 (s) Time 3 (s) Time 4 (s) Average Time (s) Velocity (m/s) 1 0 0 0 0 0 0 -- .5 -0.5 1.74 1.38 1.44 1.66 1.53 -.333 0 -1 3.03 3.00 2.95 2.85 2.96 -.338 -.5 -1.5 4.44 4.28 4.44 4.41 4.39 -.342 -1 -2 5.81 5.25 5.65 5.83 5.64 -.354 3.
Beneath Our feet Experiment 1: We put different types of rocks in to three piles that were called Igneous, Metamorphic and Sedimentary. Igneous comes from a volcano. Metamorphic is heat and pressure and Sedimentary is a mixture of conglomerate, fossils and layers. Experiment 2: We put chalk and 3 spoons of sand into a cup and shook it really hard. Some of the sand turned pink which was the colour of the chalk.
The Unknown Identification Lab was an experiment that provided the opportunity to apply all the tests that were learned in the semester of lab, to identify the two bacterias that remain unknown. Gram- staining and two other tests will be used to identify the unknowns. This experiment is crucial to the understanding of each test, and can benefit in the ability to identify the characteristics of specific bacteria. Having a clearer understanding of the bacteria can further the research of bacteria for medicine, such as antibiotics. The understanding can also help the development of research in the environment.
THHS implements a program which emphasizes mastery in the humanities, math and science, with an emphasis on the classics, and requires its students to display the leadership skills, discipline and work ethic expected by the most demanding colleges and careers. All classes are honors, Advanced Placement or college-level, and advanced elective courses are available in all subjects. The school strives to implement their humanities-based approach to excellence through extensive literature and writing courses, advanced courses and electives in English, social studies, modern and classical languages, math, science, social science and science research, as well as a required Queens College humanities seminar. All students are required to study two years of classical Greek or Latin. Students take eight academic subjects each semester, one more than the usual high school program.
In the laboratory, identification of an unknown bacterium is often necessary. In the lab, a random sample consisting of three different bacteria was selected. The sample contained one gram-positive, one gram-negative paracolon, and one gram-negative coliform. The purpose of the experiment is to identify each of the three species that the mixture contained. After receiving an unknown mixture, the sample was streaked for isolation onto TSA, blood agar, and MacConkey plates.
Chronic periodontitis Chronic Periodontitis is an inflammatory disease of the supporting tissues of the teeth caused by specific microorganisms or groups of specific microorganisms, leading to progressive destruction of the attachment apparatus of the teeth including periodontal ligament, cementum and alveolar bone with periodontal pocket formation, and recession of the gingival tissue(1) . The clinical feature that characterizes periodontitis from gingivitis is the presence of clinically apparent attachment loss. This loss mainly is associated with changes in the density and height of subjacent alveolar bone (1). Severe generalized periodontitis affects 5–15% of any population worldwide and is a major cause of teeth loss after dental caries (2). Chronic Periodontitis also known as adult periodontitis or chronic adult
The results of the second survey showed an improvement in their understanding and knowledge which influenced positively on their AVB. The video outlining how dangerous speeding is, was displayed in a PC class. After this video was shown the second survey was conducted by a few classes to represent the year 12 students’ AVB towards speeding. A number of key questions were similar to those on the first survey was to identify any improvement in knowledge and understanding, and if personal skills where developed through the use of the video displayed. The questions were also created to enable a direct comparison between the shift in AVB.
Based on test scores, Alabama’s Department of Education decided that there needed to be a change in the way students in Alabama learned math and science. Scores put students from Alabama at a disadvantage against students across the nation. Following extensive research, a committee created The Alabama Math, Science, and Technology Initiative (AMSTI) to help Alabama be competitive in the fields of science and math. The idea behind AMSTI is students learn material best by hands-on exploration. Instead of traditional textbook and lecture instruction, students need to be conducting investigations and discovering knowledge for themselves.
Learning to play an instrument or being able to read sheet music is something every child should learn. Taking music classes in elementary could benefit the brain development in children, often relieve stress, and help the students in understanding responsibilities, all which assist them in becoming well-functioning adults. It is amazing how much playing an instrument can get a child's brain working in so many different ways. The possibilities are endless for what can happen to a kid's brain just by taking music classes. In Source #2 it mentions nonstop about how "playing music helps kids use and improve they memory skills."
Intro: Water pollution has caused so many problems to our waterways that no one really knows how to help. Water pollution caused; dead zones, oil spills, garbage floating around, and unsafe drinking water. People disagree about water pollution because, people have found ways to improve and help out the problem that water pollution has caused around the world. Others believe that that water pollution has created situations and are in the process of figuring out solutions. Marine life habitats are getting destroyed, marine life is declining everyday, how and where the garbage is getting into the oceans, and the drinking water is becoming seriously unsafe to drink.
Procedure The formulation of the Technology Supported Material in Calculus 1 with Analytic Geometry is grounded on the curriculum of Bachelor of Secondary Education major in Mathematics. The completion of the course content will be achieved through the following steps: consultation with the CHED’s Policies, Standards and Guidelines for BSED major in Mathematics curriculum and examines the scope of the Calculus 1 with Analytic Geometry (core subject), followed by the administration of the achievement test, subsequently, the determination of strengths and weaknesses in calculus 1 with Analytic Geometry. The weaknesses will serve as a benchmark in the preparation and development of the material that aims to attain student’s learning outcomes
The actual conditions which found don’t match with the expected conditions. This gap indicates a problem to be investigated. As an alternative solution of this problem is to implement the adaptive contextual learning model of integrated science by integrating digital age literacy on grade VIII students. There are four theoretical studies which related to the solution of this research problem those are: learning model, contextual learning, integrated science, and digital age literacy. Learning model is a conceptual framework that can be used as a guide by teachers in learning.
Gum is the leading cause of cavities. I wondered if this is why I had 13 cavities. I learned that the bacteria sitting on your mouth breaks down the sugar in the gum and causes acid, once the acid has been sitting on your teeth for a while it creates a cavity in your tooth. I learned that gum also has a very negative effect on teeth. If gum does cause cavities continuing to chew gum is even worse because most cavities today are filled with mercury and frequent chewing may cause dislodging and releasing of dangerous materials in your metabolism.
The scientific method is a process used as a means of coming to understand the natural world through observation and the testing of hypotheses (Krogh, 2011). The first step in the process is observation. This step is used to understand the problem that you have selected. This step is where scientists define the question at hand. During the observation stage scientists must conduct research and collect information on the experiment.