Molecular beam epitaxy

1. Where do restriction enzymes come from and what is their original purpose? Restriction enzymes come from bacteria. Bacteria used restriction enzymes to cut up DNA into fragments to fight off viruses. 2. a. Why do you get different fragment sizes if you cut the DNA from two different species with the same restriction enzyme? Each species has a different arrangement of bases, and the restriction enzyme only cuts after a specific order of bases. Due to that being the case, the specific…

A plasmid is circular, relatively small in size, double stranded as a DNA molecule, and is physically distinct from the chromosomal DNA of a cell. Innately found in prokaryotic bacterial cells, plasmids can sometimes be found in eukaryotes as well 1. Plasmids are self-replicating; therefore, when a plasmid is formed, infinite copies of the plasmid can be created if the plasmid is grown in bacteria. 2 Because of the size of plasmids, which can range anywhere from one thousand base pairs up to…

Introduction Most aspects of a cell depend on the fact that atoms and molecules have kinetic energy and are constantly in motion. Kinetic energy causes molecules to bump into each other and move into different places. Diffusion is the random movement of molecules from an area of higher concentration to an area of lower concentration. Cells have selectively permeable membranes that only allow the movement of certain solutes. Diffusion is vital for many of life’s functions in a cell. It allows…

very long and tiny. Luckily there has been many advancements in DNA technology that have made working with DNA much easier. Especially in the tools and techniques used for reading and handling the DNA code. PCR is a biochemical technology in molecular biology used to increase a single or few copies of a piece of DNA across several scales generating thousands to millions of copies of a particular DNA.…

J.D. Salinger was an author that inspired many authors and peoples. Some of the people he tried to inspire did terrible things and some did things that were awe-inspiring. However, despite creating hope and a voice for a generation J.D. Salinger did not like to stay in the spotlight and preferred a more reclusive lifestyle. In order to understand J.D. Salinger’s seclusive and private life one needs to see his life’s work and how they reflect his own views and feeling in the world. To help see…

The Catcher in the Rye and Franny and Zooey The Catcher in the Rye and Franny and Zooey are two novels written by J.D. Salinger. While the books explore different ideas, there are several common themes that run throughout the two novels. The themes of innocence, sadness, mortality, isolation, education, and dissatisfaction are all similar in Franny and Zooey and The Catcher in the Rye. The main character in The Catcher in the Rye is Holden Caulfield. Holden is a seventeen-year-old boy…

J.D. Salinger: Influential American Writer “An artist 's only concern is to shoot for some kind of perfection, and on his own terms, not anyone else 's” (Salinger 198). JD Salinger was an extremely influential writer in the 20th Century. Though he did not write many works, he is still a very well known author in American Literature. He is mainly known for The Catcher and the Rye. There is a strong relationship between his life and his literature, and there are many connections between the two.…

Catcher in the Rye by J.D. Salinger Session 2 Review The Catcher in the Rye, by J. D. Salinger, was an amazing book that forced me to open my eyes to what the mid 20th century was like. It is about the main character Holden, who flunked out of school, going around New York and doing foolish things. It forces him to contemplate what he wants to do with his life and who he wants to be. This question is something that everyone around that age has to decide for themselves, and this book taught…

should be conducted effectively by the nurses. The nurses can use devices such as graduated compression stockings and intermittent pneumatic compression to reduce the risks of deep vein thrombosis (Pearse, Caldwell, Lockwood, & Hollard, 2007). Low molecular weight heparin is also an effective device for…

This paper is scribed to present the compare and contrast between chronic venous insufficiency and deep venous thromboses. It will also present pathophysiology and treatment of the two mentioned diseases. The symptoms to the diseases may be identical although the anatomy is truly different.There is no exact amount of the people that are affected by chronic venous insufficiency and deep vein thrombosis although the estimated range is from 300,000 to over 600,000 each year in the United States.…