Biology Essays

From many unprecedented calamities to extreme weather changes occurring lately, scientists over the globe are getting increasingly worried and preoccupied with the catastrophic issue of global warming and its many bizarre effects on the living beings and the world itself.

Is global warming due to human actions and can human race take actions to stop global warming? This paper is primarily based on contemplating the issue of global warming on the grounds of the role played by humanity in increasing the incidence of global warming, while also discussing the existential possibility of any ways in which humans can acquire control over the grave consequences produced by this greatest environmental rival of all times.

One problem with the experiment was that only a single egg was used, so the effects of each individual liquid could not clearly be seen. For example, immersing in corn syrup appeared to cause water to leave the cell and can be seen through the decrease in size and mass, however, the amount of liquid only changed by 2ml.

This is the principal and the universal mode of energy conversion to make it useful for the living organisms (Nelson and Yocum 521-565), and without this method of conversion, life on this planet would cease to exist (Nelson and Yocum 521-565). Therefore, it is only fair that the mechanism of the conversion as relates to the structure of the chloroplast be studied in order to determine the functional correlation with the structure.

For example, a bacterium Bacillus thuringiensis is used in the biological control of pests such as bollworms, cabbageworms, alfalfa caterpillars etc. This bacterium produces a protein called the Bt-toxin, which is harmful to leaf-eating larvae of these insects.

This essay discusses the historic effect of the study of genetic predisposition to diseases and ways to increase its positive effects and decrease the negative outcomes for the Australian people. The information will especially be conveyed to the Australian Minister for Health and Ageing, Hon Nicola Roxon MP.

Biofilms are complex structures that grow on boundaries between media, specifically the interfaces between liquid/liquid media, solid/liquid, and air/solid (Keevil, 2003). They contain a range of different microbes including, but not limited to microalgae, protozoan, and bacteria. Biofilms can contain pathogenic forms of microbes (Drake et al., 2005).

Many people die from cardiovascular diseases, as the only hope of survival in most cases is organ transplant. Heart transplantation is highly expensive and thousands of people die every day, waiting for an organ donor. For instance, about 15% of the patients in the United States die due to unavailability of suitable organ donors, and in 2003, only 15,000 out of 82,867 patients in the waiting list for organ transplants had actually received suitable donors (Bailesh, 2011).

Strengths and Weaknesses of Genetic Testing Genetic testing examines the DNA molecule for any genetic disease or any illness present in the molecule. Chemical test including the product of gene such as enzymes and proteins also include in the genetic testing.

The use of biological weapons seems to have an immense contribution in the context of warfare and terrorism. This report primarily focuses on the use of biological weapons by the states and terrorists and their significant impacts on the lives of human beings.

I am a solitary mammal found only in the upper Congo River Basin in Central Africa and I prefer altitudes of 500 to 1000 m. I am medium size, extremely shy and I have an average body length of 2.5m the average height at the shoulder is 1.5m and it is sloped with the forequarters much higher than my rear.

Breast Cancer, Is There A Cure? Cherry Hilliard Biology 210-07 Breast cancer, is there a cure? Breast cancer is one of the growing diseases among women all over the world. A lot of cures have been identified for the breast cancer in the recent years. Some of them have their side-effects, which in some cases are manageable and in other cases, are not.

Osmosis and diffusion are very essential at both the organ and cellular levels. Osmosis is the movement of the solvent molecules from the region of higher concentration to the region of lower concentration through a semi-permeable membrane. In this experiment varying glucose concentrations of 0%, 10%, 20%, and 30% were placed in the cellophane bags against the distilled water.

The Anatomy of Human Digestive System Introduction Digestion is the process wherein food is mechanically and chemically breaks down into smaller pieces small enough to be utilized and absorb by the body. The human digestive system beginsfrom the mouth, passed through the esophagus, stomach, and the intestinesup to the anus for elimination.

The article “Study Says Undersea Release of Methane Is Under Way” has been written by Cornelia Dean. It was published in the science section of The New York Times on 4 March 2010. The article is directed for climate experts who are analyzing the changes in the current global climatic patterns.

Evidently, corn would not exist if it was not cultivated and preserved by human beings. Millions of people, especially those in America depend upon corn for their food. In fact, it is a cereal plant of Gramineae family wild grass called teosinte (History Detective: In the beginning).

Name: XXXXXXXXXXXXXXXXXXXXX Course: XXXXXXXXXXXXXXXXXXXXXX Institution: XXXXXXXXXXXXXXXXXXXXXX Tutor: XXXXXXXXXXXXXXXXXXXXXXX @2010 The concept of “The hygiene hypothesis” was first mentioned by David Strachan and it states that inadequate exposure of young children to pathogenic microorganisms (e.g.

As much as jovial lifestyles are pleasant and admired by almost every individual, they cause forgetfulness of certain basic activities that an individual should abandon or adopt and cherish the more. Most people leading lavish lifestyles tend to forget the essence of exercise to the body, which may lead to contraction of diseases related to fat accumulation in the body and low blood pressure.

This paper provides a brief summary of the article Microsporidia, Amitochondrial Protists, Possess a 70-kDa Heat Shock Protein of Mitochondrial Evolutionary Origin. The purpose, methods, and results of the study are discussed. The information from the article is compared to what other articles say.

OSMOREGULATION IN CLAMWORMS Introduction: Neries belongs to the division Annelida and class Polychaeta. The worm has 160 segments with well developed setose parapodia. They are the common in tropical and temperate marine habitats. Their native is American Atlantic coasts.

Before the dawn of the age of science, such fears and apprehensions have been limited to the scope of traditional beliefs and religion. From the rock paintings in the prehistoric caves to the words printed in the Bible, one does comes across possibilities and explanations that discernibly point towards the destruction of this world.

Generally, speaking, enzymes are the cornerstone of life in every being. It is a type of cell that is found in every man, animal, plant, and other life form. Amino acids of various shapes and sizes, often numbering anywhere from 100 to 100,000 form the basis of enzymes that are considered to be proteins.

HER2 is a membrane-bound surface protein that is associated with cell growth and differentiation (Chazin et al, 1992). As cancers are associated with an increase in cell growth and the absence of differentiation in these cells, any problems with genes associated with proteins with related purposes may be associated with cancers.

D). In concurrence with Lykken’s report, it is worth exemplifying that autism came into existence way before 1943. Psychologists previously deliberated that for one to be a genius, he had to have high general intelligence. They measured the intelligence level by using astuteness quotient test also known as IQ test.

In this context the paper proceeds to make a comprehensive and in depth study of the various aspects of bird song quality that influence the choice of female and the efforts that are required by the male for maintenance of the song quality. Song output, complexity, geographical variations and vocal performance are the major criteria used to assess the song quality.

In fact, it has caused several plagues, claiming the lives of as much as 20-50 million people worldwide (Kimball, 2009). Despite these devastating effects, it took 15 years for researchers to determine the causative agent of Influenza disease. The Influenza virus is a 100 mm vessel containing matrix proteins and 8 strands of RNA, and enclosed by a lipid bilayer studded with membrane proteins hemagluttinin (HA) and neuraminidase (NA).

Characteristics and morphology The size of the rabies virus is approximately 60 nm ? 180 nm. The virus has an outer envelope, an internal protein core (nucleocapsid), and a bilayer of lipid covered with transmembrane glycoprotein spikes. The genome of the virus encodes five proteins, which are related with “either the viral envelope or the ribonucleoprotein (RNP) complex” (Rupprecht).

The importance of the Pacific oyster lies in its very high growth rates and high rates of reproduction compared to other oyster species. Many factors affect the ability of the oysters to grow, and the expansion of the oysters industry is limited by many factors such as changes in climate, varying concentrations of nutrients, poisoning by pollution, among many others.

Since decades, P. falciparum has been the foci of attention and subjected to intense study throughout the world. Some aspects of this study include biochemistry of P. falciparum, development of effective vaccines and successful immunization of susceptible individuals.  

This paper’s aim is to argue on the negative effects of animal testing using current literature, as well as to react on these current literature and articles and provide insight as to why animal testing in cosmetics is negative and provide alternatives to animal testing in order to still provide a channel for cosmetic companies to test their products before sending them out to market and avoid any adverse effects to humans.

Trap Structure of Utricularia australis Name: Instructor: Trap Structure of Utricularia australis Abstract This paper examines the structure of the Carnivorous bladderworts (Utricularia aceustralis) traps. As the name suggests, this is a plant that possess special suction traps that serves to trap prey mostly small insect larvae, corepods, Rotifers, Ciliates as well as phytoplanktons such as algae and cyanobacteria (Alkhalaf, Hubener, & Porembski, 2009).

Furthermore the paper explains the development of the trap and the different stages. The ecology of the plant is also presented which is then related to the nutrient deficiency and the modification and adaptation of the plant. Finally it explains the different theories behind the different mechanism by which this trap works involving the processes of attraction, trapping, retaining, digestion and absorption.

The author states that cloning is discouraged by various nations as cloning is against the rule of nature, which is generating humans, nurturing them and paving the way for uncertainties related with the repercussions of science. At present human population has crossed the figure of 7 billion, a huge burden on the planet.

Cells are the building blocks of life, or they may be life on their own. Cells are made up of several smaller pieces including the cell wall, organelles, and cytoplasm. There are two major types of cells. Eukaryotic cells have a nucleus, while prokaryotic cells do not.

Of the major attractions to marine zoological parks are killer whales which are also referred to as the orcas. Even though these animals are referred to as whales, they are not actually whales but large dolphins (King 4). The reason as to why these animals are referred to as the killer whales is because of their tendency to kill whales for food (King 4).

Inborn errors of metabolism are hereditary diseases in which the cellular metabolism is abnormal due to an inherited defect in an enzyme. Inborn errors of metabolism usually manifest in the neonate or an infant but can even be first seen in an adult. Abnormalities in the production or metabolism of proteins, carbohydrates etc are usually due to a single gene defect.

They are characterized by a combination of good and bad ideas, which makes them subjects of scrutiny. The origin of HIV has puzzled many scientists since the disease first came into public’s awareness in the early 1980s. For over two decades, it has been a subject of debate, and the cause of many arguments.

The slopes of this marvelous area are covered by dense forest at the foot of grassy mountain pastures. It is a geographically unique area with more than 200 endemic species. The species found in Mount Nimba include varieties of duikers, big cats, civets, Chimpanzees, and several types of viviparous toads.

According to Chris (1999), the African elephant, Loxodanta africana inhabited virtually all parts of the continent for many centuries. Currently, the animals are mostly concentrated on the southern Saharan desert, and their numbers are scattered and disjointed in the region. The habitats of elephants in the sub-Saharan Africa are divided into four main zones that include central, southern, western and eastern Africa (Anderson and Coe 1974).

Honeybee colonies are amazingly well integrated and highly organized. The integrity of the colony is maintained through chemical communication with the help of pheromones. Pheromones are chemical compounds that are produced by organisms to signal or communicate with each other.

Flowering of plants is dependent on light intensity, light duration and quality of light. However there has no clear evidence of what actual effects light intensity has on flowering. In this essay I will identify the role of the Myb-Related Protein (MYR1) and Myb-Related Protein (MYR2) as inhibitors of flowering responses on reduced light intensity in Arabidopsis.

Flow of knowledge, energy and matter is required for their maintenance. Living systems can be unicellular or multi-cellular. As the name suggests, multi-cellular organisms are those made of more than one cell. There can be different kinds of cells, two of which are eukaryote and prokaryote cells.

These duplicates are then provided with favorable growth media and other conditions to proliferate. Initially, only cells were being cloned; but with the course of scientific development the scientists’ progressed unto cloning groups of cells which could be used to develop complete organs or tissues.

[Student’s Name] [Instructor’s Name] [Course Title] 24 November 2011 The Pathophysiology of Hepatitis B Hepatitis B, an infectious disease caused by the Hepatitis B virus (HBV, a DNA virus), was formerly called serum hepatitis, inoculation hepatitis and post-transfusion hepatitis.

Each and every activity is controlled and coordinated by this important part of the body system. It is comprised of the brain, the spinal cord, the nerves and neurons (Brodal 40). The central nervous system is divided into two sections: the central nervous system and the peripheral nervous system.

Various fruits taste differently depending on the major organic compounds present in the fruit (Hulme, 1970). Some of sweet tasting fruits include ripe bananas, apples, guavas, watermelons, mangoes among others. Most fruits from citrus family, such as oranges, lemons, limes and grapefruits have a sour taste.

What role does bundle sheaths play in C4 Plants? The plants use C3 and C4 photosynthesis for the production of energy. The C4 plants are very less in number but they contribute to 25% of the photosynthesis that occurs on earth. C4 plants are classified into three groups based on the major decarboxylase enzyme involved in the decarboxylation of C4 acid cells.

People in a comfortable position must contribute extensively to eradicate Poverty only then will the world become a better place to live in. There is a severe shortage of food in African countries, people die in the Dark Continent because of this shortage of food, genetically modified food is really useful and it can save many a life in Africa and all across the globe where poverty and hunger exist.

Bacteria were discovered by Anton Von Leeuwenhoek in 1676, which he called animalcules. Louis Pasteur in 1859 discovered that fermentation is an effect of microbial activity. Robert Koch postulated the ‘Germ Theory’ and went on to win the Nobel Prize in 1905.

Since the announcements, the quickening pace of discovery relating to the basic biology of human stem cells has been substantial. Generally, this is a result of the promise of the application of these special cells to various therapeutic uses, including the treatment of a variety of diseases that involve tissue and organ degeneration (Nisbet 1).