Milk Lab Report
Whole Milk: We did not conduct any tests on the Whole Milk, because we had already identified the other samples. The only remaining unidentified milk sample was A and the only milk type we hadn’t named yet was whole milk. Therefore by using the process of elimination, we were able to conclude that “A” is whole milk.
Cream: The two tests we conducted on Sample B, showed that it was cream. The first test we conducted on it was for protein, which came out negative. The second test was for starch, which also proved negative. The cream’s nutrition label shows that the cream does not contain protein or any sugars. Since starch is a type of sugar, and starch and protein are not in the cream, we can deduce that Sample B was the cream.
Introduction: Someone in a restaurant has suddenly fallen ill and a mystery powder has been discovered with the victim. As the chief investigator, your duty is to identify the mystery substance through a lab. In this lab, it will consist of five known compounds and one unknown compound. Your job is to distinguish which one out of the five substances is the mystery powder. To figure out the mystery matter you will have to compare their physical and chemical properties and match them with the appropriate compound. Furthermore, you will compare their reactions with water, universal indicator, vinegar and iodine solution to discover what the mystery powder is.
In order to learn even more about my specimen’s metabolic functions, I ran an experiment using a type of differential medium called litmus milk. This differential medium or any other type allows me to actually see certain changes that occur in the tubes after a certain metabolic reaction has taken place (Black, 2015). For this experiment two tubes that contain skin milk and the pH indicator, litmus were inoculated with specimens Ca and Cb. My first litmus milk tube was inoculated with a strain of specimen Ca that was taken from my specimen Ca glucose tube. While my second litmus milk tube contained a strain of specimen Cb that was taken from my specimen Cb lactose tube. After inoculation, both litmus milk tubes were put in an incubator at 37°C
Feelings are the most significant part of human’s creature, but what if it comes to the goal that one’s life is based on? Would it still be that important? In the article, “Dog Lab”, Claire McCarthy discusses her own experiences as a medical student at Harvard school. McCarthy was born in 1963. She did her residency at Boston’s Children’s Hospital and she is now working as a pediatrician at the Martha Eliot Health Center in the Jamaica Plains. During college, she used to keep a journal with her that provided the outline of her writings which she referred to for her books such as Learning How the Heart Beats: The making of a Pediatrician and Everyone's Children : A Pediatrician's Story of an Inner City Practice. In addition to McCarthy being
...at keep organisms alive. “Proteins are the most structurally sophisticated molecules known” (Campbell, 1999) which is reason enough to study them. The techniques we learned in this lab form a basis from which a detailed study of proteins is possible. Following our procedure we were successfully able to set up a quantifying assay to determine the amount of protein within a milk sample, although our yield percentage was rather low. However, errors in this lab (in the form of a low yield percentage) may have an origin from our last lab. In the process of extracting proteins from the milk sample, we may have inadvertently lost some of the protein through erroneous measurements, or perhaps through poor handling of either ammonium sulfate or the dialysis tubing. While not sufficient enough (at this point) to invalidate our results, they do explain the major difference between the expected and the actual amount of protein extracted.
The concentration of the following solutions can be measured using a spectrophotometer. In our lab, we will be using the Bradford Assay procedure to measure the concentration of our protein samples. A spectrophotometer is a machine that passes light through a cuvette that can detect how much light a solution can absorb (Absorbance). The absorbance from our measured unknowns can be used to determine the concentration of protein in the solution. If any of our test solutions produce the highest absorptivity, then that solution has the highest concentration of protein because more protein more protein molecules will bind to the Coomassie dye, yielding a dark blue color. If the brand company of muscle milk claims their product have more protein, then we expect to have a high absorptivity and dark blue color for Muscle Milk than the other
Quigley, Lisa, et al. "The Microbial Content Of Raw And Pasteurized Cow Milk As Determined
Labrador Retrievers, also known as Labs, have long been regarded as the most suitable pet throughout the world. Labs are great family dogs. They have an average lifespan of 12-15 years. The English Lab originated from Great Britain and American Lab comes from America. They are working dogs that fall under the category “Gun Dog,” and need to live where there is a lot of room to roam.
The purpose of this experiment is to determine the absolute configuration of an unknown chiral secondary alcohol using the competing enantioselective conversion (CEC) method. This method uses both R- and S- enantiomers of a chiral acyl-transfer catalyst called homobenzotetramisole (HBTM), in separate parallel reactions, and thin layer chromatography to identify the stereochemistry of the secondary alcohol, whether it be an R- or S- enantiomer. Quantitative analysis was performed using a program called ImageJ after the appropriate picture was taken of the stained TLC plate. The molecular structure of the unknown alcohol was identified using 1H NMR spectroscopy by matching the hydrogens to the corresponding peak.
...nerally a more healthy people. Milk has many hazards that are veiled from the public and pose many grave risks to a consumers health.
Milk is a common drink at any time of the day, and undeniably one of the most popular. Milk does not come in just a liquid form, it is also included in many different foods. When asked about milk most people will say it is good for your bones, supplies calcium, and comes from a cow. Although milk does give the body calcium which allows less to be absorbed from the bones, pasteurization takes out many other vitamins that could help the body (Historical). This includes thiamine, vitamin B12, and vitamin C. And actually while all milk is based on the original look of cows milk, not all milk comes from cows. Today there are five classifications of milk: Whole, 1% or 2%, fat-free, lactose free, and organic. The biggest advancement for milk has been in the lactose-free area where soybeans, coconuts, rice, and other nuts are used to create the white substance (Mattie).
In this method foods and harmless substances are given in a disguised form. Both the provider and the person being tested are unaware whether it is a harmless substance or food. The identity of the substance is only known by a third party who uses some sort of code. Several sessions of the test is required if more than one material is under investigation. This is practical and useful for patient with mild allergic reactions but needs to be conducted carefully on individuals with severe reactions to foods.
Independent: 20 mL of a substance (fat- free milk, fat- free lactose- free milk, vanilla ice cream, and plain yogurt)
...ia-ridden and harmful milk of times past. The history of milk is certainly not dull, and its future is sure to be equally as turbulent.
Wagner, C. L., Anderson, D. M., & Pittard III, W. B. (June 1996). Special properties of human milk. Clinical Pediatrics , p 283.
Since when does sexy conduct healthier and better milk? The two print ads that I am introducing to you is a milk from the Coca-Cola Company. The milk is called Fairlife and comes in different flavors: 2% reduced fat, 2% chocolate, fat free, and whole. Their tag line is “Believe in a better milk”.