Urea

simulated lab for simple diffusion, nothing will move across the membrane because NaCl, urea, albumin and glucose are all too big to go through the semi-permeable membrane. Facilitated diffusion is movement of particles from high concentration to low concentration with the help of a carrier protein channel.…

gastrointestinal tract, myocytes, lymphocytes, and the kidney. Ammonia is neurotoxic if it accumulates but, normally, it is metabolized to urea by hepatocytes, and to glutamine by myocytes and hepatocytes. Urea is excreted by the kidney, but can also diffuse into all tissues and body fluids. In the gastrointestinal tract, bacterial ureases produce ammonia from the urea. Significant formation of ammonia also occurs following hydrolysis of glutamine by glutaminase containing cells such as…

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Staphylococcus aureus, Staphylococcus epidermidis, and Enterococcus faecalis. The first biochemical test was to preform the Urea test. A sample of the gram-positive cocci colony was taken out which then was transferred into a Urea broth to test for Urease. This was incubated at 37 degrees Celsius for 48 hours. The ending result was no color change, which was a negative reaction in the Urea broth. The results eliminated Staphylococcus epidermidis from being the bacteria in the specimen. This only…

I am alive… But there is a problem with that. Well, how to I say this without being disgusting? Umm…. As a normal human being, we all produce waste. This waste comes from cells, as metabolic waste. This includes excess carbon dioxide, salts, and urea. Urea is a toxic compound that is produced when amino acids are produced. And that waste leaves our body. The system that gets rid of that waste is the excretory system. This system is consisted of the skin, lungs,the kidneys, and all their helper…

The second test tube 11 was identified as a gram negative bacteria. The biochemical tests that I performed that were positive were catalase, glucose, SIM, indole, citrate, and urea. First, the catalase test has the presence of an enzyme in the test isolated detected using hydrogen peroxide. Bacteria possess catalase with a small number of bacteria; isolation is added to hydrogen peroxide when bubbles occur. When the bubbles occurred on gram positive bacterium it was a conformation of being…

enzyme wasn’t made. The casein test had no clear zones, meaning casein wasn’t degrade. For the Tryptophan degradation, no red was detected on top of the medium, which indicated that it was negative. Urea hydrolysis test was also negative no color change to pink was detected. This means that there was no urea hydrolysis and the organism does not produce urease or cannot live in broth. Phenylalanine deamination test was negative meaning the slant didn’t change to green. For the hydrogen sulfide…

Abstract: Using the PhysioEx.9.1 software, I ran Activity 4: Simulating Filtration lab to learn about the filtration of solutes in a membrane system. This experiment was conducted using four solutes: NaCl, urea, glucose, and powdered charcoal. The goal was to learn if any of these solutes passed through the three different dialysis membranes at varying pressures. Does increasing the pore size increase filtration rate? What effect will pressure have on the filtration rate? These are the…

Chapter one 1.0 Introduction 1.1 Background information and rationale Maize (Zea Mays L.) is one the most important cereal crop in sub-Saharan Africa and Zimbabwe. According to FAO statistics the total amount of maize produced worldwide is estimated at 785 million tons and United States of America is the largest producer and contributing 42%, Africa produces 6.5% with Nigeria being the largest African producer with nearly 8 million tons, followed by South Africa. Based on area and production,…

stomach, H. pylori uses its flagellar motility to cross the mucus layer that covers and protects the gastric cells and reach the gastric epithelium where the pH is more neutral. To achieve this, H. pylori surface-bound ureases catalyze the hydrolysis of urea to generate ammonia and bicarbonate, neutralizing the acidic pH of its microenvironment.…