Pentane, water, test tubes and food dye are needed in order to start the next portion of the experiment. Measure and place 3 mL of water in the same test tube as 3 mL of methanol. Record any observation in the lab manual worksheet. Add 1 drop of food dye and note whether it miscible or immiscible. Repeat the step again but instead of water and methanol use water and pentane. Also, remember to observe and note down the observation. Clean the lab station by washing all the supplies
starting point in a specific medium. The purpose of this lab is to find that what influences the separation of food dyes by using paper chromatography, which is often used as a simple technique to separate or to analyze complex mixtures. In paper chromatography, the absorbent is the paper itself, while the eluent can be any number of solvents. When the paper is placed in a chromatography chamber, the eluent moves up the strip. Those different dyes are all organic molecules, structures of which depend
A: Summary The report is about the lab-made burger patty. Technology has reached a point, where scientists are able to make a burger patty in the lab. There are some issues that follow with this technology. One of them is the price of the burger patty is $300.000, which makes it impossible for a normal consumer to buy it. An another issue such as the taste will also come in to play, where it has a taste that satisfies the people and also the nutrients in the meat. Besides the “ick-factor” that this
an epiphytic bacterium that is found in natural environment widely, it plays an important role in several food and industrial fermenting companies. Leuconostoc mesenteroides is facultative anaerobe which requires amino acids and complex growth factors. [1] Lactic acid bacteria (LAB) variety which includes Leuconostoc species are found on crop plants L. mesenteroides is the most abundant LAB species to be found on fruits and vegetables and responsible for the initiation of sauerkraut and other fermentation
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Using Chemical Reagents and Indicators to Determine the Presence of Macromolecules Nutrients in Unknown Solutions Abstract: To use chemical reagents to test for simple sugars and starch, proteins, and fats in the multiple procedure lab. Important equipment that was involved in this experiment included the chemical reagents such as Benedict’s reagent and Lugol’s solution for carbohydrates, Sudan IV indicator for lipids and Biuret reagent for proteins because these reagents determined the colour
Diksha Madaan November 18, 2014 Lab Report- Digestion A & P 2 Introduction: Objective: Enzymes of activity in Gastrointestinal Tract Background Information: Digestion is a process of breaking down food via mechanical and chemical action into small molecules such as proteins, vitamins, carbohydrates and fats. The GI tract is also known as the digestive tract. There are many organs associated with the GI tract but the solid organs are the liver, pancreas, and gall bladder. The hollow
murder or rape instead. So, rather than seeing if perfume irritates a bunny rabbit's eyes, they should throw it in Charles Manson's eyes and ask him if it hurts.” The minimal protection and vast numbers of animals being tortured and kill in testing labs is atrocious. The supporters of animal testing claim to have many reasons that justify this cruel act, but none of these claims hold true when we examine the real facts behind them. Everything these defenseless animals go through and the pure stupidity
Abstract: In lab, we were given the broth of an unknown bacteria labeled with simply a number. The purpose of this experiment, is to use the techniques previously acquired during the course of the lab in order to identify the unknown. The unknown presented will be one of three gram-negative bacteria: Escherichia coli, Klebsiella pneumoniae, or Salmonella typhimurium. The streak plate technique and Gram Staining methods were completed in order to obtain colonies and to identify the morphology of the
without metal. The metals we use in our houses are mostly for keeping them sturdy. Though there is one problem we have when it comes to metals. That problem is that they rust. Metals rust when they are in contact with oxygen, and water. They rust much faster when they are in contact with salt water, and acid rain. We chose to see what would happen to various metals when they contacted with salt water. When the electrons move around in the salt water, it causes the metals to rust. The metals we chose