Relebogile Moloko 1155553 Introductory life sciences Assignment 1 Prokaryotes and eukaryotes are two different levels of cells. Prokaryotes are cells that do not have a membrane bound nucleus or organelles sounded by membranes and eukaryotes are cells that have a membrane bound nucleus as well as membrane bound organelle. They have obvious structural differences which result in differences functions and cell efficiency. From my research, I have observed that eukaryotes have structural advantages over prokaryotes. This essay will be discussing the differences in the two cells with reference to the metabolic processes and storage of genetic information.
The second competency that resonated with me was the ability to “Demonstrate the use of informatics methodologies to advocate for patient autonomy, dignity and rights and in policy development that would support both the patient and the institution.” I am passionate about advocacy. As a nurse and officer, I must often advocate for my patients and the soldiers who serve under my leadership because I recognize keeping them at the center will improve overall outcomes, satisfaction and morale. Despite the challenges and push back I may encounter as an advocate, it is my responsibility to the patient and soldier. The competencies acquired with this specialty will mature my advocacy. Additionally, I will be
Organelles are membrane-bound, specialized subunits within a cell that have a specific function. Organelles are "little organs" in cells. The following are the major functions of organelles: 1- Protection/support 2- Barrier between cell and its environment 3- Building and repairing of cell parts 4- Transport of materials 5- Storage and release of energy 6- Disposal of waste
The functions mainly for the nucleolus are RNA-related, and it was also detected the ability of RNA processing and assembly f ribonucleoproteins (RNPs) Another role of the nucleolus is the ability to maturate, assemble and export RNP particles as signal recognition particle, telomerase RNPs and processing of precursor transfer RNAs and U6 small nuclear RNAs.  An additional role in the regulation of the cell cycle was observed, where it manages the stress responses, telomerase activity, and aging. Sequestering or re-leasing some specific proteins in the nucleolus regulates this function. It was always thought that the main function of the nucleolus was linked with the ribosome biogenesis and exportation of mRNA in yeast and mammalian cells, however in recent studies data it was demonstrated the ability of the nucleolus in plant cells in transcriptional gene silencing, mRNA surveillance, nonsense-mediated decay and mRNA export. Eukaryotic ribosomal RNA genes are organized in large clusters, often involving hundreds or thousands of repeated genes, with each gene encoding one copy of the 18S, 5.8S and 25–28S rRNAs.
Various assays have been devised to evaluate apoptosis at several points of the cascade. Based on the methodology, the commonly used assays can be classified into the following groups: 1. Changes in cell morphology: morphological changes such as cell shrinkage, membrane blebbing, nuclear condensation, DNA fragmentation and changes in plasma membrane occur. Each of these changes can be quantified using Flow Cytometry. For example, the forward scatter parameter reduces on cell shrinkage while nuclear condensation causes an increase in side scatter.
Tertiary structure has a three-dimensional structure, which is from non-covalent contact between the amino acids. Lastly, quaternary structures form into one larger protein because of non-covalent interactions that combine many polypeptides together. The three-dimensional shape of a protein is determined by its primary structure. The way the amino acids are lined up makes a protein 's structure and specific function. The instructions for the order of amino acids are made by the genes in an organisms cell.
1.1 The Cytoskeleton The concept and the term ‘cytosquelette’, (in French) were first introduced by a French embryologist Paul Wintrebert in 1931 (Frixione 2000). Cytoskeleton is a complex network array of cytoplasmic fibers that determine and control visco-elastic properties and mechanical strength of cells. It also organizes and gives structure to the cell interior, controls many dynamic processes, such as intracellular trafficking, cell division, adhesion, and locomotion. It is ubiquitously present in all eukaryotic cells and its analogues have been discovered in prokaryotes. Biochemically, the cytoskeleton is defined as a remnant of the cell after treatment with non-ionic detergents, which looks like an empty cage of the cell.
The movement of the endocytosed protein which is destined for the apical surface to fuse with and also the movement of extracellular materials from one side of the epithelial cells to another can be termed as transcytosis. With respect to concept, transcytosis can be grouped into three processes namely; endocytosis, exocytosis and transcellular transport (Pravda,2011). Though transcytosis is tightly controlled by the cell it also has the potential for transepithelial movement of bacteria and other pathogens, hence it sometimes becomes an etiologic factor in the body(Pravda,2011). Trancytosis occurs in hepatocytes and this phenomenon is a typical example of transcellular transport . Here the apical membrane form bile and the basolateral membrane face blood.
Assignment unit 3 1. Unlike prokaryotic cells, eukaryotic cells have: 1) a membrane-bound nucleus; 2) numerous membrane-bound organelles such as the endoplasmic reticulum, Golgi apparatus, chloroplasts, mitochondria, and others; and 3) several, rod-shaped chromosomes. Because a eukaryotic cell’s nucleus is surrounded by a membrane, it is often said to have a “true nucleus.” The word “organelle” means “little organ,” and, as already mentioned, organelles have specialized cellular functions, just as the organs of your body have specialized functions. At this point, it should be clear to you that eukaryotic cells have a more complex structure than prokaryotic cells. Organelles allow different functions to be compartmentalized in different areas
I also expect to get more practice in the field by doing internships. I also expect to gain more connections with faculty and students that will be useful in the future. I plan on specializing in clinical social work. As of right now, I plan on working with the geriatric population especially those in assisted living after completing my MSW. However, I would not mind working with individuals with disabilities.
I started York College in August of 2013. I started off as a biotechnology major. I took all major science classes and noticed I weren’t doing so well in them. I found myself struggling. I went to advisement and this is where I was told that the first year spent all of my classes can go towards this new health science major.
DIY - What Is Life? How can you determine whether something is alive, dead, or non-living? Whenever we speak of life, we must think in terms of cells. Even though we cannot see cells without a microscope, they are the basic unit of life and they exhibit all of the characteristics of living organisms. They can exist individually, as do bacteria, or they may work together, taking on specialized tasks to create a more complex organism.
The process of developing theories and conducting experiments enthralls me. I not only strive to apply scientific findings to treat my future patients, but also hope to gain inspiration from my patients to advance scientific knowledge. I believe the ideal way to apply my interests, and to best serve my community, is as a physician-scientist. The MD Anderson 1st Year Medical Student Program would offer me the opportunities
I intend to further push my dedication beyond my education, and into the work I choose to follow up with in life. If I were invited to attend ASMSA, I would focus my studies around a science stand point, with classes such as Biomedical Physics, Anatomy, Physiology, Immunology, etc. ; my studies would be limitless. ASMSA will advance my learning skills and help to prepare me into becoming successful. ASMSA’s rigorous courses help students, willing to challenge themselves, to be more studious and driven in their work.
As a student I know the importance of studying and completing school works in a timely manner. That is what helped in the past and I plan to continue doing it throughout the RN school. Obtaining my RN is an investment both intellectually as well as financially. Once I complete the course, I hope to have a broader knowledge in the field of nursing which I can use in the