Adenine

packaged into what we know as chromosomes. Chromosomes contain DNA and proteins that carry all the genetic information of an organism. The nucleus is also the site for DNA and RNA synthesis. The mitochondria, which is a bilayer structure that generates adenine triphosphate (ATP), a form of energy (SparkNotes: Intracellular Components). Peroxisome is also included in the intracellular organelles. This is a single-membrane structure that is found in all eukaryotic cells and functions to break down…

Pathophysiology: Proteus syndrome is caused by an activating somatic mosaic mutation in AKT1, a gene which encodes the well-studied serine/threonine kinase PKB/Akt .1,2 Akt is the key mediator of the PI3K signaling pathway. In response to a growth signal (e.g. IGF, EGF) and the autophosphorylation of a receptor tyrosine kinase, PI3K is recruited and activated, generating PIP¬3 molecules at the lipid membrane. These partially activate Akt and also activate PDK1/2, which complete the Akt…

Designer babies are the new way to bioengineer offspring, to change the different genetics of a child. Scientists will be able to eventually use transcription and translation to change the different traits like; gender, appearance, intelligence, diseases, and personality. There is much controversy on whether designer babies should exist because of ethical controversy and designer babies causing additional racism in our country. Only the wealthy will be able to have designer babies, and will…

Introduction: Prokaryotic cells are cells that do not have membrane bound organelles, such as ribosomes and include organisms such as bacteria. In contrast, eukaryotic cells contains organelles and are often more complex organisms (Karp, 2010). These cells have some similar features such as the plasma membrane and the use of ribosomes to make proteins. However, there are also significant differences between prokaryotic and eukaryotic organisms. Whilst the prokaryotic/ eukaryotic…

There are many mechanisms of epigenetics, including such as de/acetylation and methylation of histones, hyper methylation of CpG islands and phosphorylation etc. Epigenetics can be both spontaneous and hereditary, with some forms of epigenetics, such as histone acetylation, being passed on through gametes. Some forms of epigenetics have large consequences, leading to some serious conditions e.g. Prader-Willi syndrome, whilst some can have longer term ramifications for future generations e.g.…

Macromolecules are large molecules that are composed of smaller units. The four major macromolecules are carbohydrates, lipids, nucleic acids, and proteins. Carbon is the primary component of the four macromolecules. Carbon's molecular structure allows it to bond in many different ways and with many different elements. A Monomer is an atom or small molecule that may bind chemically to other monomers to form a Polymer Different monomers make up a polymer. Polymers combine to make a molecule, and…

Proof reading and Mismatch repair are crucial processes in DNA replication, their existence reduces the likelihood of a mutation occurring by a significant amount. In fact, proofreading reduces the likelihood of errors occurring to approximately one in every ten million nucleotides (Pierce, 2012-pp354). This essay will emphasise the importance of proofreading during, and mismatch repair post DNA replication and explore its significance in the mechanisms that drive Lynch syndrome. In eukaryotes 3…

Jacob Saunders Mrs. Austin Biology 3/31/2015 There is a lot of controversy over whether gene therapy should be used. Some people want gene therapy to be used and others do not want gene therapy to be used. Some say that Gene therapy can be helpful and save lives but others say that is it right to play the hand of god and change people’s genes. The Idea of Gene therapy was first proposed in the beginning of the nineteen seventies. When the idea was first proposed they did not call it Gene…

Essay: Introduction: “Is the use of laboratory animals for drug testing is justified?” Animal testing is a practise that has been done for many years for the fundamental purpose of investigating problems and side effects that may occur when using a chemical substance or a drug on the human body. Rather than testing it on a human the scientist tests this substance on an animal closely related to humans with both genetics and structure e.g. apes and orang-utan. After this is done, the scientist…

Suppose we have a certain segment of a DNA molecule ,a gene for example that we want to amplify ,that is make many identical copies of that gene of interest, one way is to basically take that gene to integrate it into a bacterial plasmid to place that recombinant plasmid into a bacterial cell and to allow that bacterial cell to divide many times and eventually make many copies of that gene of interest. The problem with this particular method is that it is not only time consuming and not only is…