Essays on Biology

The scientific evidence which lead to the fluid mosaic model 19th Century: The earliest models were very simple, as they suggested that lipid soluble substances entered cells faster than water soluble substances; scientists in those days had also figured out that the layers of lipid …

Pre-transfusion Blood Tests: Title: To perform the following tests: ABO and RH grouping using the Diamed Gel Card system. Rh and Kell phenotyping (antigen typing) using the Diamed Gel Card system. Direct Coombs Test (DCT) using the conventional tube system. Direct Coombs Test (DCT) using …

Lab Report Factors That Affect Enzymes Reaction Rate Name of lab: Effects of temperature, pH, Enzyme Concentration, and Substrate Concentration on Enzymatic Activity Introduction: Enzymes are the most important types of proteins, they act as catalysis (speed up chemical reactions). If enzymes didn’t exist, biochemical …

In Austin many people suffer from seasonal allergies which are triggered by mold spores and pollen grains mainly during spring and fall. Mold spores are responsible for causing seasonal allergic rhinitis also known as hay fever. Molds did not have a specific bloomy seasons but …

PhysioEX notes Autorhythmicity- heart’s ability to trigger its own contractions Phase O- a lot like depolarization in neuronal action potentials. Sodium channels open, increase of sodium INTO cell. Phase 1- sodium channels close, potassium channels close, decrease in potassium and sodium. Calcium channels open, increase …

Enzymes are biological catalysts. They increase the rate of reactions by a factor of between 106 to 1012 times, allowing the chemical reactions that make life possible to take place at normal temperatures Definition of enzyme: A protein with catalytic properties due to its power …

The first step in the identification process is generally obtaining isolation. A usual isolation technique for isolation is the streak plate. With this method a small droplet of culture is spread over the surface of the medium in a pattern that gradually thins the sample …

Abyssal Zone Steven Jevan 10. 2 Located deeper than 2000 meters underneath the ocean surface, lies a biome that we have barely seen and realize. This unbelievable and incredible biome is called the abyssal zone. With a depth reaching down to 6000 meters, it is …

B. Assuming that Joseph’s heart stopped, all of the cellular processes and membrane functions are going to be affected. The loss of oxygen is going to affect everything, ultimately killing off all of the cells. Loss of oxygen and glucose will affect the mitochondria, making …

The symbiotic relationships that establish involving the roots of major plant species and fungi are called Mycorrhizae. These symbiotic relationships differentiated by the two-way movement of nutrients whereby carbon runs to the fungus. The fungus then facilitates the movement of the inorganic nutrients towards the …

Man loves food and loves to eat. His appetite is always good and in some cases, he will eat food even if he is not hungry especially if the food is tasty. Of course, food has to get into the blood to be carried to …

In order to build muscle for example, one must gain an efficient mind muscle connection – therefore more experienced bodybuilders have adapted a stronger neurological connection between their mind and the muscle group they have chosen to work out. Thus, by doing a chest/tri split …

All cells are designed to perform a particular job within an organism, that is, to sustain life. Cells can become specialized to perform a particular function within an organism, usually as part of a larger tissue consisting of many of the same cells working together …

Developmental psychologists tell us that development is caused by two very extensive intermingling factors: heredity or nature, and environment or nurture. Often determining the demarcation line between these two factors, which directly or indirectly influences our biological and psychological constitution, is not an easy task. …

Medium formulation is an essential stage in the design of fermentation process. Most fermentation media require liquid media, although some solid-substrate fermentations are also operated. Fermentation media must satisfy all the nutritional requirements of the microorganisms and fulfill the technical objectives of the process. There …

Introduction In this lab, we are going to learn how the stress of temperature affects fresh beets. We have come to learn that cell membranes organize the chemical activities of cells. All cells are made of plasma membranes, often called fluid mosaics. It is sometimes …

Introduction The high frequency of occurrence of bloodstains at crime scenes has resulted in an increased need for sensitive identification methods. In the case of wildlife forensic evidence, this translates to specific techniques capable of identifying the source species (animal) of a bloodstain. Standard techniques …

Abstract Current treatments of Parkinson’s disease (PD) remain symptomatic, for example, Levodopa, and results in a number of negative side effects after a foreseen period of time. However, investigations into using human embryonic stem (ES) cells to generate dopaminergic neurons hold huge potential for future …

Title of the Experiment: Enterobacteriaceae Identification: The Enterotube II System Learning Objectives: After completing this exercise we were able to inoculate an unknown bacterium that belongs to the Enterobacteriaceae by using technology effectively with a Enterotube II. An Enterotube II is a miniaturized multi-test system …

Erythropoietin and Athletes Steven D. Jackson Student, American Military University Abstract Erythropoietin (EPO) use as a performance enhancing agent in sport carries both significant and detrimental risks to go along with its suggested benefits. As such, it was banned by the International Olympic Committee in …

Enterococcus By Richard Guilford Enterococcus Enterococcus, or more appropriately enterococci, are a family of bacteria in the division firmicutes (meaning strong skin and referring to the cell wall) and the class bacilli (which refers to its rod like shape). They look just like streptococcus bacteria …

The biomedical model of health Introduction In health psychology it is seen that health is defined by different models. One such model is the biomedical model of health which revolves around the aspect of a healthy body. The model was introduced in the nineteenth century …

Explain the importance of the pharmaceutical industry in the late 19th and 20th centuries and it’s effect on the treatment of illness. (9marks) During the late 19th and 20th century many apothecaries (pharmacists) and herbalists were transforming family shops into chains of pharmacies (Boots). This …

Temperature and Its Effects on Respiration in Plants and Animals Introduction Cellular respiration is the process of breaking down organic compounds to create usable energy for plants and animals. Energy that results from this metabolic process is stored in the form of ATP (adenosine triphosphate) …

1. 2: Using one or more examples, explain effects of neurotransmission on human behavior: Our nervous systems consist of between 10 to 100 billion neurons; each of which making 13 trillion connections with each other through electrochemical messages that allow people to respond to stimuli, …

Having more understanding of how the process of scientific inquiry works, t he more I felt that science is a result Of efforts made by scientists through the accumulation of time. For example, in order to provide an evidence that the SST art of a …

Note: This section also includes the integumentary system 1. Which gives the correct sequence of increasing organizational complexity? a) organ, tissue, cell, organ system, organism b) cell, organ, organ system, tissue, organism c) cell, tissue, organ, organ system, organism d) organism, tissue, cell, organ system, …

Van Dudes explicitly refutes the concepts of Thoreau suggesting that they, as the title of his work suggests, destroy democracy. Van Dudes feels that when man disobeys the law and separates from the democratic society he feels has failed, he simply pushes democracy further towards …

This assignment will describe the role of energy in the body and explain the physiology of two named body system in relation to energy metabolism. It will explain where energy comes from, how the body uses energy, what is metabolism/catabolism and anabolism and also it …

Introduction Sordaria fimicola is an ascomycete fungus studied for its product of meiosis and mitosis that form 8 haploid spores. These spores are contained in a fruiting body called perithecia. Asci made up of spores are contained in this body. The perithecia are squashed in …