Molecular beam epitaxy

Today, I concluded the experiment of last meal mix up. Through multiple test, I was able to decipher which stomach content belongs to what person. The first test was the brown paper bag test, which allows me to see if the stomach content contains lipids or not.. This involved taking a piece of bag paper and using a pencil to divide it into five sections. Next, I labeled each section with the number of the stomach contents. Then, I placed two drops of each sample in the appropriate section. After…

When I was in seventh grade I had a biology teacher, Mrs. Greenfelder, that changed my life. My experiences, through her leadership, instilled a love of science. Her passion and knowledge of the subjects was inspiring. She lived the science and made it relative to my everyday life. Soon after, I was driven to a pursue a career in the biology field. After taking some time away from my career to prepare my young children for school, I am excited to pursue my professional goals. I would like…

Genetics is a fascinating field of biology that deals with heredity and shows how the characteristics of living things are controlled by their genes.The Gene Researcher for a Week (GRFAW) program is right for me because I have a strong passion to learn about genetics and contribute to research efforts at a genetics lab. I have developed skills that would make me a good scientist through both my education as well as extra-curricular activities and I am excited to apply these skills to this…

The human body is arguably the most researched organism on Earth. The intricate relationship between molecular, anatomical and physiological characteristics of it astounds me, yet what interests me most is not how powerful the human body is as a whole, but how ultimately our physiology can fail us. Studying biology at an undergraduate level will allow me to grasp a deeper understanding as to why this happens, as well as develop my existing knowledge of the mechanisms involved in keeping humans…

DNA analysis, also known as DNA profiling, testing, typing, is a process that takes genetic material and evaluates it so that it can identify individuals in a criminal investigation or in use of a forensic application. The beginning step of the performance of DNA analysis on a reference sample or person is the collection of DNA from cells. These cells can come from a blood sample or even swabbing the inside of an individual’s cheek. After it is collected, the samples are then sent to a lab for…

Many endosymbiotic theories have figured in opinion about the differences between prokaryotic and eukaryotic cells. More than 20 different versions of Endosymbiotic theories have been presented in literature to explain the origin of eukaryotes and their mitochondria (Martin, Garg and Zimorski, 2015, p.1678). A Prokaryotic cell contains structural components such as: Cell wall is made of peptidoglycan. Gram-positive bacteria contain a thick cell wall with many layers of peptidoglycan…

While reading the book Genome by Matt Ridley, I started to hone in on some of the key topics and main ideas to take away from this novel. It was a very interesting read that introduced new ideas to me. Many of the ideas in the book applied directly to our Biology class. Some topics that were covered in lecture can be directly applied to the book. Matt Ridley talks about many important things in his novel; however, I feel as if the chapters of life, species, and environment are the most…

The sunflower seeds of 500 mg served as the pre-treatment for treatment group 2 group with five (5) rats and 1000 mg for treatment group 3 with five (5) rats while the control group with 5 rats did not undergo pre-treatment of sunflower seeds. The pre-treatment of sunflower seeds was given orally to the rats; treatment group 2 was given 500 mg of sunflower seeds orally to each rat while treatment group 3 was given 1000mg of sunflower seeds orally to each rat. The rats were trained to eat the…

Objective: The objective of this lab is to show how diffusion occurs with different types of osmosis. This is done with varying concentrations of solute. Introduction: To fully understand this experiment you should have a solid basis of background information on a few a topics. The cell membrane, for example, is the flexible barrier which surrounds the cell (see Figure 1). This organelle controls what is able to enter and exit the cell, which is known as selective permeability. The…

Introduction The human cell consists of three parts; the plasma membrane, the cytoplasm, and the nucleus. The plasma membrane is the outer boundary of the cell, it separates two major fluid compartments- the intracellular fluid and the extracellular fluid, and plays a key role in cell transport. Cell transport is the movement of materials across a selectively permeable membrane, and this process can occur in two ways; passive transport and active transport. Passive transport allows substances to…