Essays on Biology

Good reasons for artificial hearts There are not enough heart donors – “Each year, about 30,000patients are deemed eligible candidates for heart transplantation. However, only a small fraction of this group, numbering about 2000, actually winds up receiving donor hearts. Given the current figures, it …

A very good morning to the principal, teachers and fellow friends. I am Samuel Lim, the president of the English Club and it is my honor to be able to stand before everyone to give a speech on ‘The Dangers of Dengue Fever and How …

In the last century there has been a lot of increased research in science which has greatly influenced our daily life. Introduction of new technologies like the recombinant DNA technology has led to new developments in the agricultural, pharmaceutical and molecular biology. It is possible …

Brain is the part of the nervous system that is enclosed in the skull. All vertebrates have well-developed brains; most invertebrates do not have true brains. Instead, they have groups of nerve cells called nerve nets, nerve cords, or ganglia. The human brain is an …

In the 1800’s, well-known biologist, Charles Darwin enlightened us with his theory of evolution and natural selection. In short, natural selection states that random genetic changes transpire within an organism’s genetic code, such changes are preserved because they are valuable for survival. Darwin’s ideas came …

Chemotherapy simply means the use of chemicals to treat disease by destroying microorganism or cancerous or tumor cells. Generally, chemotherapy acts by destroying rapidly dividing cells although the mechanism that leads to this differs. Several divisions of chemotherapy agents exist such as the anti-metabolites, plant …

Organ Harvesting Research Paper We have all heard about the stories and have seen the movies in which the protagonist wakes up in a tub covered in tons of ice and stitches in his side only to realize that he was a victim of organ …

Introduction Staining is a technique that is used to diagnose or study the morphology of abnormal cells such as cancerous cells by highlighting the structural components of a tissue (Bancroft and Gamble, 2008). Staining provides a contrast between different structures in a tissue specimen and …

The discussion is formulated, as the entire thesis, along with the two major investigations done during this study. These are the study of the regulatory mechanism of wg genes expression in the first part and of Rem expression in the second part. An emphasis is …

Lymphatic system study guide- complete after listening to lecture and reviewing the vocabulary. 1. This receives lymph from the rest of the body. The thoracic duct receives lymph from the rest of the body. 2. Small masses lf lymphatic tissue that rings the pharynx in …

“Eeeeeeeeeew, yuk, I don’t want to sit next to HIM, Miss, that’s so unfair!” I went through so many comments like that every day. Everyone thought that if they were put next to me they would catch my ‘outcast disease’. I’ve never had a proper …

Abstract This essay has been written to seek to undertake analyse and critically evaluate the relationship between the stress and causal mechanisms which have been proved to cause physical illnesses. The research which has examined these phenomena shall be surmised and discussed to seek to …

Unknown Bacteria Lab Report Introduction The purpose to this lab was to identify an unknown bacteria from a mixed culture provided to us by our instructor. This study was done by applying all of the methods that have been instructed on thus far in microbiology …

Alexandra Mitchell Dr. Lamont King GAFST 200 November 30, 2010 Sugar Cane Alley Jose understands at a young age that in order to escape the indentured life of working in a sugar cane plantation like his ancestors before him, he must do something different. In …

The Tony Ferguson Weight Management Diet: An Information Fact Sheet for Community Members Overview: The Tony Ferguson Diet is a weight loss and management diet, which is based on specialized shakes, soups, bars and muesli. The diet is advertised as low GI and low carbohydrate. …

Embryos are essentially microscopic human beings. Regardless of what good they may provide to the field of medicine, the ethical controversies surrounding embryonic stem cell research are profound. Stem cells, the cells used by the human body to replenish damaged tissue, are found in both …

Abstract Sexual reproduction in organisms is a cause for genetic variation. This can be seen through the process of meiosis in Sordaria fimicola because of the effects of crossing over and independent assortment that occur in meiosis I. Before performing this experiment we hypothesized that …

Among the soil fauna, earthworms have an important role to improve soil texture. The soil texture plays an important role in water holding capacity. Earthworms have an ability to enhance soil characteristics. It contributes to the breakdown of organic matter and release plant nutrients (Edwards …

40) Describe the structure of a mammalian respiratory system. Include in your discussion the mechanisms of inspiration and expiration. In mammals, oxygen first passes through the nasal cavity. The nasal cavity is covered with mucus and cicilia to filter the air. The nasal cavity leads …

When studying the human body, there are seven organizational approaches. Each approach studies the body in a different yet unique way and is used in the health care field. The approaches consist of; body planes and directions, body cavities, quadrants and regions, anatomy and physiology, …

Sexual selection was an idea proposed by Darwin and refers to the process in which males and females attempt to maximize their chances of reproductive success. Within a species there are certain characteristics that make individuals attractive to potential mates. An example of this is …

Introduction Plants have long been used in traditional medicine. They have been known as rich sources of modern medicines, drugs and drug products because they produce a host of bioactive molecules, which serve as chemical defenses against predation or infection. By the mid-1980s, most pharmaceutical …

Bacteria Growth Requirements Microbiology Life as we now it has ended. What is left you ask? Well it is said the only thing that could survive an incident that could end our known way of life is a roach and a pack or Twinkies. In …

Genetically modified foods (GMF) have foreign genes such as plants, animals and bacteria inserted into their genetic codes. Genetically modified organism is processed in a way that does not occur naturally. Combining genes from different organisms is known as recombinant DNA technology. There are alternative …

My schooling and college was really of import factor in determining my calling. Excellent classs in board scrutinies, 83 % in 10th class and 82 % in 12th class, ever kept me in top 5 % of the school. Excellent module, which ever focused on …

Genetic testing has become an extraordinary tool in the fight against breast cancer in young women. Due to advancement of scientific research, the identification of the genetic markers of disease through the collection and analysis of an individual DNA is possible today. Genetic testing can …

Given the repercussions of developing osteoarthritis and taking into consideration the considerable number of individuals with such a condition, it is without doubt essential to gain further insights regarding the risk factors for such a manifestation of arthritis; currently, a number of risk factors have …

Annotated Bibliography Waller-Wise, Rene. ncbi. nlm. nih. gov. Umbilical Cord Blood: Information for Childbirth Educators, Winter 2011. Web. 15 Feb. 2013. The author, a licensed clinical nurse specialist and childbirth educator, was driven to do research and write this article because she only had the …

Parasites can become a major problem for farmers with livestock. Any animal can become infected with parasites and some farmers can tell when an animal has parasites. However, some animals that are infected don’t show any signs until it is too late to treat them. …

Diseases can come from a variety of places – bacteria, viruses, and parasites to name a few, all which can affect metabolic rates in animals. Khokhlova etal, conducted an experiment where they infected indiviudal gerbils (Gerbillus dasyurus) with 50 fleas (Xenopsylla ramesis) per gerbil, and …