Due October 19th, 2015 Erin Gibbs: 200270053 Dr. Andrew Cameron Bio 222 Written Assignment 1 1. Health officials realized that the mysterious illness was not caused by a bacterium because the pathogen would be identified quickly in comparison to a virus, which is more complicated (CBC, 2013). 2. It was hard to identify the infectious agent because SARS presented as flu-like symptoms with a rapid onset and is similar to the common flu (CBC, 2013). People who had other underlying health problems made it difficult to identify symptoms of SARS because it made it hard to differentiate (CDC, 2013).
Biology 15 Lab # 3 Professor Passerini September 23, 2015 Scot Albert Lab #3 Questions 1, 2a, 3, 4, 5, 6a, 7, and 8 Table 3.1 - all columns except the last one. -------------------------------------------------- 1- a-Upside down and backwards b- If you move it right, the image moves left If you move it left, the image moves right c -
Proteins were found in the victim’s stomach contents by exposing the contents to the Biuret solution and getting a positive result after the solution became purple. Protein can also be found in the meat of the victims typical, “…pizza with sausage, pepperoni, and bacon…”. Lastly, starches were found in the victim’s stomach contents though exposing the victim’s stomach contents to the Iodine solution and getting a positive result after the solution became a dark color. In pizza, starches can be found in the entire
As a result, all of our samples contain protein with muscle milk containing the most. We use Table 1, Table 2 and Figure 1 to visually show our results. The experiment proved our hypothesis to be true. Not only did it prove our hypothesis right, but it also proved that the FDA provided
And here you are, spreading them all over delicate scientific equipment without a care in the world. Well, anything’s worth it for science. Even your life can have meaning under extreme circumstances.” Salivary glands, he knew, were traditionally stimulated by the presence of food. That was their function, after all; saliva was crucial in assisting the body with digestion and breaking down matter to pass easily through the esophagus.
Discussion PV92 Gel Electrophoresis Results: Through the usage of gel electrophoresis the correct allele for each sample was able to be determined. Lanes one through three in the gel,were the positive control lanes they contained the PCR cocktail and a known high-quality template for the PCR reaction. First lane contained the sample with the +/+ allele, which had two copies of the ALU repeat allele. The first lane had a band at about 941 base pairs.
The effects of alcohol on Biological Membranes. Introduction In this experiment it will be analysed the damage alcohols can have on biological membranes. Membranes are made up of lipids and proteins. Membranes usually help maintain the balance in a cell as it holds all the cellular materials.
Independent Variable amount of substrate (sucrose) present 3. Controlled Variables temperature, pH, sucrase + sucrose incubation time 4. Describe what is measured as an indicator of sucrase activity and why this is an indicator of sucrase activity. I believe glucose and fructose was used as an indicator because they are what produces sucrose and sucrose creates more sucrase activity.
Independent Variable pH 3. Controlled Variables temperature, amount of substrate (sucrose) present, sucrase + sucrose incubation time Effect of Temperature on Enzyme Activity 1. Dependent Variable amount of product (glucose and fructose) produced 2. Independent Variable temperature 3. Controlled Variables pH, amount of
The iodine test determines the presence of starch in biological materials. It is predicted that, if starch is not present, the solution with iodine remains yellow. However, if starch is present the solution with iodine becomes a blue-black colour. Plants have starch as the storage polysaccharide (glucose units held together by glycosidic bonds) while animals have the equivalent of glycogen. In this experiment, the dark blue colour is visible because of the helical amylose and amylopectin reacting with iodine (Travers et al., 2002).
After record your data and determine the absolute rate of the enzyme-catalyzed reaction. Based on the data and observations the hypothesis was accepted. It was accepted because when pH were changed to a variety of levels the transmittance began to get higher reaction rates. The increased absorbance means greater amount of product and a higher reaction rate will be produced.
5 water bath were set up each to10 °C. (5 were used do the experiment faster) 5 cm3 of starch solution were added into the 5 test tubes that were labeled test tubes. Then 5 cm3 of amylase enzyme was added into the other 5 test tubes that were labeled. Put one of the starch solution test tube (preferably the one labeled 1) and one of the test tube containing amylase into the water bath (10 °C).
Salivary flow rate below 0.1ml/min for unstimulated whole saliva or 0.7ml/min for stimulated whole saliva is suggestive of hyposalivation. Sialochemistry can be helpful to assess specific qualitative alterations in saliva. Nutritional deficiencies, diabetes mellitus and menopausal disorders are diagnosed through haematological assessment of nutritional status, blood glucose and estrogen/progesterone concentrations respectively. The presence of underlying psychological disorders can be revealed by appropriate structured interviews and/or psychometric instruments. If clinical or laboratory examination reveals the presence of any these factors, then speculation of secondary BMS should be made.