Purpose This experiment deals with separating substances. The objective was to become familiar with the methods of separating substances from one another using decantation‚ extraction‚ sublimation techniques. Brief Introduction This experiment was set to teach research students different methods of separating substances from one another. Materials that are not uniform in composition are set to be impure or heterogeneous and are called mixtures. The separation of the components of mixtures is
Premium Chemistry Separation process Mixture
Extraction of Caffeine from Tea Leaves Santos‚ Raphael‚ Samson‚ Nonia Carla‚ *Tabora‚ Brylle‚ Tan‚ Kate Michal Department of Biological Sciences‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Tea leaves are natural products that are harvested from agriculture. Caffeine‚ on the other hand‚ is a stimulant that has been shown to speed up the time of reaction‚ increase alertness‚ and improve one’s concentration. What we did in this experiment was to extract the alkaloid caffeine content
Premium Caffeine Tea
Preparation of SKEO The extraction of S. khuzistanica was performed by hydro distillation and clevenger apparatus for 5 hours. Once extraction was completed‚ the resulted essential oil was dehydrated using sodium sulfate (Merck). The essential oil was stored at temperature of 4ºC until using (12). In order to provide different concentrations of the extract‚ Dimethyl sulfoxide (DMSO) was used. Gas chromatography/mass spectrometry analysis of essential oil Isolation and measurement of the sample
Premium Cytotoxicity MTT assay Leishmania
DNA extraction in Watermelon and Bananas Abstract During this experiment the researcher investigated the differing amounts of DNA present in bananas and watermelon. So that the researcher could do this‚ and accurately record the amounts‚ the researcher liquefied the fruits in a blender‚ added water and salt to them‚ and the added laundry detergent before using contact solution as an enzyme. Rubbing alcohol was then poured into the mixture and the DNA was extracted and
Premium Fruit Watermelon Hypothesis
There are massive problems with manipulating the DNA. DNA manipulating can cause of the ethical issues or belief that god should have ultimate power over nature; safety issues DNA manipulation can bring long term negative effects‚ detrimental effect on genetic diversity‚ high price‚ and will disrupt the natural ecology. There might be some advantages with the manipulation DNA such as eliminating illness and disease in unborn children‚ but it has really small possibility to happen. Even if it success
Premium DNA Genetics Human
DNA SPOOLING ISOLATION OF DNA FROM ONION INTRODUCTION This project will demonstrate several basic steps required for isolation of chromosomal DNA from cells. To extract the chromosomal DNA‚ both the cell membrane and the nuclear membrane must be broken open. This is accomplished by disrupting the membranes with a solution of detergent and salt‚creating a cell homogenate. Once the DNA is released from the nucleus‚ it must be protected from nucleases‚ enzymes which will degrade the DNA. Keeping
Premium DNA Gene Chromosome
Many people believe that DNA profiling is not a credible source. Although 99.9 percent of human DNA is the same in everyone‚ the remaining 0.1 percent which consists of about 3 million base pairs of amino acids is unique to that individual (Ballaro and Walter). Without the help of scientists and their technology many criminals would get away with their crimes. Deoxyribonucleic acid‚ or DNA‚ is a component of every cell in the human body. DNA can be found in any organic source for example saliva
Premium DNA DNA profiling Crime
DNA TECHNOLOGY How is DNA technology used in law enforcement? There are many different ways it is used‚ but it is mostly used to solve crimes. Much like deaths‚ rapes‚ or even big robberies. DNA is a way to identify a person by: blood‚ hair‚ skin‚ saliva etc... That is why when people are trying to discover a murderer they are very careful when they are collecting evidence.That is why when something occurs‚ everything is blocked off‚ and only investigators could pass into the area
Premium Crime Police Criminal law
As the assistant to Michael Brune‚ the executive director of the Sierra Club‚ I am in full support of The Exploratory Fracking and Extraction act. I would like to express concerns associated with hydraulic fracturing‚ or fracking‚ on behalf of the Sierra Club. Critical problems that are commonly brought to attention are: contamination of water supplies‚ seismic activity caused by fracking‚ and it worsens the current condition of the climate. Fracking wells inject water‚ sand‚ and chemicals deep
Premium Water Petroleum Natural gas
DNA FINGERPRINTING LAB REPORT DNA contains genetic material and information that makes up each individual trait. Every person can be identified by providing his or her genetic information based on a particular DNA strand. DNA information is an effective way of identifying persons if it is used properly. It is used to identify humans in different situations such as crime scenes‚ accident scenes‚ paternity testing‚ soldier remain identification‚ inheritance claims‚ missing person investigations‚
Premium DNA Fingerprint DNA profiling