When carbon dioxide reacts with water, carbonic acid is made. This 0.1% aqueous bromothymol blue solution (also known as Bromthymol Blue) is a commonly used pH indicator. Bromthymol blue changes color over a pH range from 6.0 (yellow) to 7.6 (blue). It is a good indicator of dissolved carbon dioxide (CO2) and other weakly acidic solutions. Despite its name, bromothymol blue solution may sometimes appear yellow or reddish depending on the pH of the stock water used to prepare this pH indicator solution.Low levels of carbon dioxide or acid in solution with bromothymol blue indicator will appear blue.
Bleeding disorders, such as hemophilia or von Willebrand disease. Patients undergoing chemotherapy because it reduces the production of new blood cells. Blood type test: Blood donation: 1-Autologous blood donation: Before elective procedures, the patient may donate blood to be set aside for later transfusion. Autologous blood products must be clearly labeled
Bacteria can be classified as gram positive or negative (difference in call wall). Gram positive bacteria have a thick cell wall of peptidoglycan (“polymer of disaccharides cross-linked by shorts chains of amino acids”), and stains purple after the staining procedure under a microscope (Todar, Kenneth,
A Bronsted-Lowry base is a compound that accepts a proton. A conjugate acid-base pair is a pair of substances in a reaction whose molecular formulas differ by a single proton. An indicator was used to indicate when to stop the titration, an indicator is compound that is added in small amounts to indicate the pH of a solution visually. The indicator used in this lab was methyl orange. This indicator is pink/red when a solution is acidic, orange when it is neutral, and yellow when basic
1. Introduction The complete blood count is a blood test that is used by doctors or medical professionals to get information about different parts of your blood cells and check if they remain within the normal range. Generally, blood is divided into red blood cell (erythrocytes), white blood cells (leukocytes), and platelets. The main areas of interest in complete blood count to detect whether there is a decrease in the normal count or if the patients have a certain disease which in turn are useful to know as they affect the body’s normal homeostasis. 2.
Bile solubility test is used in laboratory for differentiation of alpha hemolytic Streptococci from Streptococcus pneumoniae. In catalase test it acts as a catalyst for the breakdown of hydrogen peroxide to oxygen and water. Catalase production test is done for an organism by bringing it into association with hydrogen peroxide. If an organism is
You use cUTI plates as the chromogenic media and find that some of the colonies have turned pink in colour. What information does this tell you about the bacteria in the sample, and why did the colony change colour? [2 marks] This tells me that the bacteria in the sample contains coliforms such as Escherichia coli (E.coli). The colonies changed colour as the enzymes produced by the bacterial cells reacted with the red galactosidase in the agar medium, this reaction causes the colonies to turn pink making them easily
It allows the neurologist to detect diseases at its early stages (Galotti, 2008). PET scans measure the blood flow to different regions of the brain, resulting in an electronic reconstruction of a picture of the brain, outlining which areas of the brain are most active at a particular time (Galotti, 2008; Posner & Raichle, 1994). There are several advantages and disadvantages of a PET scan. The positive aspect of a PET scan enables early detection of certain neurological illnesses, such as Alzheimer’s disease, and epilepsy. In addition, it is used as an alternative to a biopsy to determine how far a disease has spread (Galotti, 2008; Posner & Raichle, 1994).
Complete Blood Count The reason a complete blood count is performed is to detect abnormal from normal. Having either high or low complete blood count can be a marker for various diseases and infections. This particular test is done to measure the exact number of red blood cells in the body. This test also gives us the exact number of the white blood cells. Performing the complete blood count gives us the exact amount of hemoglobin in the patient’s blood.
The reaction that occurs can be investigated via the adding of the liver extract which contains the arginase to urea concentrations and distilled water. The amount of urea formed is determined via spectrophotometric analysis α-INPP. The urea produced was known via the color reaction with the α-INPP, it is the reagent used for the colorimetric determination of urea. (Barry J, et al. 1984).