Free Biology Essay Examples and Topics | Page 59

Atlantic Stingray (Dasyatis Sabina) Biology Essay

4 pages (1000 words) , Download 2 , Essay

DISTRIBUTION: The species can be found throughout the Atlantic northwest and central, ranging from Chesapeake Bay south towards Florida, to Campeche within the Gulf of Mexico area (Snelson 729). Populations of Atlantic stingrays are found in the St. Johns River system in Florida, where they are extensively studied since the 1980’s.

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Breast cancer metastases Biology Essay

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In 1980, the report of human immunodeficiency virus that causes AIDS is said to be as a result of blood transfusion leading to the general panic for both the public and institution for the United States blood banks. There has been a threat of the global shortages of blood and the fears of contamination have also hastened the attempts of finding a life-sustaining alternative.

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Understanding the Brain and the Mind Biology Essay

3 pages (997 words) , Download 4 , Essay

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Throughout generations, scientists have continued to study how the brain works and different techniques have been used to, somehow, get good resolution and timing at the same time (Voytek, “Computational Analysis”. Apart from the cellular level, scientists have also attempted to explain the behavior of individuals in terms of the influence of the changes in a person’s environment and the effects of society on their behavior.

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Regulation of Pancreatic Function Biology Research Paper

5 pages (1495 words) , Download 3 , Research Paper

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This research paper will focus on the regulation of the exocrine function. The exocrine function involves the release of digestive enzymes through the pancreatic duct. The research specifically handles the regulation of the acinar cells. These cells are responsible for the release of zymogens that play a critical role in digestion.

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Oculocutaneous Albinism Biology Literature review

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Any health illness that is caused due to abnormalities in genes or chromosomes is known as genetic disorder. Genetic disorder may be heritable or non-heritable. Genetic disorders can affect any system of the body including skin. Some of the skin genetic disorders are albinism and psoriasis.

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Coral Reefs and How They Are or Will Be Impacted by Climate Change Biology Essay

6 pages (1632 words) , Download 2 , Essay

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A vigorous reef ecosystem contains tremendous activity, colors, and sounds, and is filled with significantly compact aggregations of invertebrates and fish. In this view, tropical reefs are more evocative of the Serengeti in Africa than of the tropical forest they are frequently contrasted to, where the native mammals and birds can be difficult to observe and are secretive.

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The Effect of Nutrients Deficiency on the Growth of Rye and Barley Biology Lab Report

6 pages (1742 words) , Download 2 , Lab Report

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Aspects such as leaf area, plant height, leaf area index, plant growth rate, dry weight, crop growth rate, relative growth rate, net assimilation rate, photosynthesis, net assimilation rate, rate of carbon dioxide exchange, the content of chlorophyll, as well as the efficiency of nitrogen utilization have been found to influence the growth of plants.

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Interdiction for experiments Biology Assignment

4 pages (1000 words) , Download 2 , Assignment

All these constituents have different role in maintaining culture environment. An aseptic condition is the basic need for cell culture since in an unsterilized condition bacteria, virus or fungi can grow which subsequently contaminate the growth of the cultured cells in vitro.

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The role of microRNAs in breast cancer Biology Essay

7 pages (1750 words) , Download 2 , Essay

331). Recent investigations have targeted miRNAs because of their high possibility in solving problems in cancer therapy. So many miRNAs have been associated with different types of human cancers such as lung cancer, papillary thyroid carcinoma, breast cancer, colon carcinoma, and gastric carcinoma (Tang, Ahmad & Sarkar, 2012; Kayani, Kayani, Malik & Faryal, 2011; Science Daily, 2013).

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Transforming Growth Factor-beta and ROCK Inhibitor in Immunostaining Biology Lab Report

7 pages (1868 words) , Download 2 , Lab Report

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Even though there exists no certainty that a gene recombinant product will be accumulated in the Escherichia coli (E coli) at levels that are high, in biologically active foam, and in full length, a significant magnitude of efforts has been put towards bettering the versatility and performance of the microorganism.

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Molecular biology of the neuronal cytoskeleton Biology Article

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These include the microtubules, microfilaments and neurofilaments, they have different functions, but maintain interaction with one another (Brady and Kirkpatrick, 1). These fibrous subcomponents are synthesized from the polymerization of certain protein subunits.

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The Mechanism of Transmission of an Impulse along a Neurone Biology Essay

4 pages (1114 words) , Download 3 , Essay

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A human body has many biological systems working in tandem and in perfect harmony to synchronize these various body functions. There are ten major systems in humans, which are the following: the circulatory system, the digestive, integumentary, musculoskeletal, respiratory, reproductive, endocrine, urinary, immune, and finally, the nervous system.

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Review of a presentation Biology Essay

5 pages (1250 words) , Download 3 , Essay

This disease makes the immune system unable to differentiate antigens and health tissues thus directing antibodies against health tissues. Summary Lupus disease is caused by body’s immune system hype reactivity. The history of this disease dates back in 13th Century where its name was coined to fit the physician’s view of the disease.

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Genetic Modified Foods (Cons) Biology Speech or Presentation

3 pages (750 words) , Download 2 , Speech or Presentation

On several accounts, it has been realized that while these foods can indeed be used effectively in addressing the question of food shortages across the world, they present a myriad of challenges that might not justify their production. Most of these challenges have, therefore, led to many people advocating the abolition of the GM foods on various accounts.

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Present the case against the anthropogenic causes of global warming Biology Essay

8 pages (2000 words) , Download 3 , Essay

The remaining of the radiation is absorbed by land and water bodies. This results in warmth of the earth’s surface. Certain greenhouse gases can capture sun’s radiation, thus increasing the temperature of the atmosphere. However, human activities are increasing the level of greenhouse gases and this has increased the possibility of raising the temperature of the earth.

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Paper 2 Health Pamphlet Biology Essay

4 pages (1000 words) , Download 2 , Essay

HIV (Human Immunodeficiency Virus) is a virus that leads to AIDS. HIV works by attacking and killing body cells that form the human immune system. AIDS condition is progressive – moving from bad to worse – and the victim rapidly becomes more and more vulnerable to other diseases as time go by.

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Are Viruses Alive Biology Essay

8 pages (2322 words) , Download 4 , Essay

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Viruses have unspecified structures of deoxyribonucleic acid commonly referred to as DNA. The DNA defines the structure of cells, the fact that viruses have indefinite DNAs makes them capable of changing their structure from time to time thus making it difficult for the body cells to identify and remove them from the cell structures.

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Hormones Present During Pregnancy Biology Assignment

3 pages (799 words) , Download 4 , Assignment

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Normal maternal endocrine acclimatization to pregnancy is mainly regulated by the hypothalamus, ovaries, pituitary, thyroid, adrenal and parathyroid glands. These regulate and monitor the placental fetal-maternal unit. The physiological process of pregnancy initiates emotional and physical changes in women. These changes can be attributed to hormonal influence from the glands mentioned above.

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The Pros and Cons of Organ Donation the Giving and Receiving Biology Research Paper

4 pages (1000 words) , Download 3 , Research Paper

The importance of organ donation can be estimated through the fact that thousands of people are registered in the waiting list of individuals who want their organs to be transplanted in the region of United States (Maier, 2011, p.318). Not everybody is lucky to obtain an organ while he/she is still healthy and living, several die and their names on the waiting list are then removed.

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The impacts of oil spills on marine and terrestrial ecosystems Biology Research Paper

4 pages (1000 words) , Download 3 , Research Paper

However, some other effects are not immediate given that there have a potential effect of polluting the entire surrounding of the marine and terrestrial ecosystems. Moreover, these impacts have remained hidden for a long period and the results have been a disruption of food chain among organisms in the areas where the incidence has occurred.

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Influence of Increased Heat in the Earths Atmosphere on Human Illness Biology Essay

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Global temperature rise has a profound effect on the overall health of the populations of the world. As greenhouse gases continue to increase through human activity, the temperature of the Earth’s surface will continue to grow. Ecological impact on the human populations will continue to be affected by the aspect of growing heat problems in contrast with a lack of infrastructure that is prepared to handle the impact.

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Stages of Labor Biology Assignment

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Stage 3 is the delivery of the placenta, which occurs some minutes after the birth of the baby. This happens with some uterine contractions, which are mild and not painful, pushing the placenta out. The woman may not feel the delivery of the placenta, because all her concentration might be on the newborn instead of on herself.

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Fetal Development Peculiarities Biology Assignment

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This process is called fertilization and it takes place in the female fallopian tube. The fallopian tube is part of the female reproductive organ that connects the ovary with the uterus (womb). Fetal development, however, starts after fertilization and it takes approximately nine months before a fully grown baby is born.

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Analysis of the 6 Categories of Leukocytes Biology Essay

4 pages (1243 words) , Download 2 , Essay

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The skeletal system provides the body with its basic framework, as well as structure. It also aids in the safeguard of the human body as well as in enabling easy movement of the body parts. Looking at a skeleton sometimes might be scary but, it is one of the body’s most living and life-giving systems. It is comprised of bones of two types.

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The Ecological and Evolutionary impact of cane toads in Australia Biology Coursework

9 pages (2250 words) , Download 2 , Coursework

This is a fact that has been proven otherwise and a new scientific name suggested as Rhinella marina. However, regardless of the name, cane toads remain among the largest species in the Bufonidae family. Adult cane toads are heavily built with an average weight of about 2.9 pounds and they grow to a length of about 12 cm (National Geographic, n.d).

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Darwinism vs creationism Biology Research Paper

5 pages (1250 words) , Download 2 , Research Paper

The debate, which is considered as part of cultural wars, is particularly prevalent in the US and to some degree in Europe and across the globe (Witham, 2002). There are distinctive differences between Darwinism and creationism, some based on belief and others based on data.

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Clostridium Difficile Biology Essay

8 pages (2000 words) , Download 3 , Essay

The unnecessary use and over-prescription of antibiotics have been known to result in the development of resistance. One critical drawback of such practices is C. difficile infection (CDI), which induces diarrhea, colitis, and pseudomembranous colitis (Wilcox 2003).

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The Acellular Slime Mold Physarum Polycephalum Biology Essay

5 pages (1453 words) , Download 2 , Essay

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The most species-rich, largest and ecologically significant heterotrophs are composed of distributed networks that do not have specialized centers, as exemplified by the vast mycelial networks of fungi (Dussutour et al. 2010). This fact is critical information on how distributed systems are able to maintain an optimal supply of multiple nutrients which are important to life and reproduction.

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Physiology of Organ Systems Biology Essay

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The normal body functions are regulated mostly by our central nervous system. The specific pathways of regulation are however different based on the system affected. The autonomic nervous system has a major function in managing the normal processes of the cardiovascular system with the interplay of pressure, volume, and chemical receptor signals.

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Bacteria menningitis haemophilus influenza Biology Essay

5 pages (1250 words) , Download 3 , Essay

It leads to different diseases in children below the age of five years and it got a belief that it was the cause of the bacterial meningitis before the discovery of its vaccine. The bacterial infection results in the inflammation of the meninges and thus the symptoms (Evans and Brachman 4).

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PV92 practical Biology Assignment

7 pages (1750 words) , Download 2 , Assignment

They are essential since they help inactivate the ions thus making them not to be able to react normally with other ions and elements in order to produce scale or precipitates. Given that most enzymes such as the DNases need metal ions for purposes of using it as a cofactor, it implies that lack of InstaGene matrix would lead to a situation where the enzymes are not inactivated.

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Giardiasis Disease Biology Essay

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Giardiasis is a common illness caused by a parasite that may result in diarrhea and stomach cramps. The Giardia parasite can spread through contaminated water, food, and surfaces, and from contact with someone who has it. Antibiotics can treat giardiasis.

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Microtubule Composition and Function in Eukaryotic Systems Biology Essay

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The cytoskeleton and its network, in particular, have integral roles in maintaining the cell’s shape, facilitating in cytoplasmic streaming, as well as in the movement and arrangement of the organelles within the cell, especially during cell division. The cytoskeleton is composed of three kinds of connective fibers.

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Effect of Marijuana on Sleep Patterns of Young Adults Biology Essay

5 pages (1451 words) , Download 2 , Essay

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Cannabinoids in marijuana are understood to be the principal psychoactive constituents of marijuana through cannabinoid receptors in the brain. While the cannabinoid constituent may be free of central brain activity, it may possess potential therapeutic characteristics due to its anti-convulsant and myorelaxant characteristics.

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The Circulatory System and It's Importance Biology Essay

6 pages (1500 words) , Download 3 , Essay

There are a number of processes at work inside man that render him a living being. There are different systems in place for activities like eating, getting sick, having a child, doing exercises or the basic act of taking in air. One of these systems is the circulatory system.

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Nervous System and Maggot Behavior Biology Essay

3 pages (774 words) , Download 3 , Essay

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From the practical conducted, it is clear that blowflies lay their eggs on decaying material, such as the carcasses of dead animals. Larvae hatch from eggs and this is a temperature-dependent process. Larvae – the maggots - have an outer cuticle and an inner epithelial basement membrane (Sawin, Harris, Campos, & Sokolowski, 1994, p. 353).

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Describe the journey of a Red Blood Cell around the body Biology Essay

8 pages (2000 words) , Download 4 , Essay

(Goodman, Kurdia, Ammann, Kakhniashvili, & Daescu, 2007). The cell membrane determinines the properties of the erythrocyte. Cytoplasmic enzyme in the membrane maintains the flexibility of the RBC, besides transporting of ions and preventing the oxidation of proteins in the red blood cells.

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Plant/Botany Book Reflection 2 Biology Essay

7 pages (1750 words) , Download 2 , Essay

The first reaction in beginning to take my notes was how well written the book is. The flow of descriptive words is more like a novel and brings the whole experience of the two travelers into a much more interesting read about what it was they were doing at any given time.

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Plant/Botany Book Reflection 1 Biology Essay

7 pages (1750 words) , Download 2 , Essay

This can be attributed to an increase in the interest of the scientific community in harnessing the power of medicinal plants to cure illnesses such as cancer and other forms of psychoses. Schultes, Hoffman, and Ratsch, three well-known ethnobotanists wrote a book dealing with both the traditional use of these herbal plants, as well as scientifically explaining the effects of such plants when taken into the human body, successfully integrating both the cultural aspects and the potentials of using herbal medicine by presenting the subject of medicinal plant usage through a historical, societal, and scientific context.

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Human Health and Diseases Biology Essay

6 pages (1696 words) , Download 3 , Essay

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Many scientists have dedicated their time and energy to finding the best methods of disease diagnosis that practitioners must apply appropriately. The world needs a healthy population that will drive it to better heights. If humans were to assume the disease and not perform any relevant research, then disease would be a major extinction factor.

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BIOLOGY CONFERENCES Biology Essay

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Impulses Prevention from the brain to the body illustrates proof to Sarah’s post. The explanation on what characterizes MS lesions is not clear and unnecessary because it did not indicate what MRI revealed. The etiology of multiple sclerosis (MS) given by Sarah is adequate but fails to indicate the symptoms and body parts MS affects.

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Improving Patient Care through Molecular Diagnostics Biology Essay

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The paper will discuss how the constant improvement of diagnostic techniques drives improvements in our understanding and treatment of disease processes with a specific focus on diseases like cancer, Aids, and diabetes. Traditional cancer diagnostic techniques included ‘assessment of histologic appearance, identification of specific tumor subtypes, tumor grading, assessment of lymph node status.

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Respiratory System Biology Assignment

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The author states that respiratory system comprises of the nasal passages, larynx, the pharynx, the trachea, bronchi and the lungs. On the other hand, ventilation describes the inhalation and exhalation processes. It refers to breathing process. In inhalation, lungs are inflated with air that brings oxygen into the body.

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Bright Field Microscope Biology Lab Report

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According to the paper findings, it can, therefore, be said that the main function of the microscope is to increase the resolution. If the magnification is higher then the resolution will be higher. (Bisen and Sharma 2012). Microscopes are of two types namely Light microscope and electron microscope.

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Getting to Know the Honey Bee Biology Essay

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bees are viewed in two different ways in our society. First, as a carrier of allergies that could have life altering consequences if not dealt with immediately and second, as a part of our food chain. No matter how you put it though, Honey Bees are here to stay so it is up to man to understand everything that we can about these insects.

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Tendonitis and apoptosis Biology Literature review

4 pages (1000 words) , Download 2 , Literature review

; and upregulation of p53, RCD, and some heat shock proteins, as well as increased downregulation of TIEG1, in the extracellular matrices in the tendons (Buhrmann, et al., 2011; Courneya, et al., 2010; Haddad, et al., 2011; Klatte-Schulz, et al., 2012; Maeda, et al., 2009; Millar, et al., 2009).

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Human visual system Biology Essay

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Visible light is a form of electromagnetic radiation of wavelength of approximately 400 to 750 nanometers (Bernstein et al. 2007, P.45). However, the sensation of light in the eye is dependent on both the intensity and wavelength of light. In this regard, the wavelength usually determines the color that one sees because of sensation while intensity determines how bright or dim the light is sensed by the eye.

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How Energy Can Be Converted from One Form to Another Biology Essay

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This essay discusses how energy can be converted from one form to another, giving specific examples it also defines what we mean by fossil fuels. It explains two different energy alternatives to fossil fuels in detail and discusses how they work, how they compare with fossil fuels and their relative advantages and disadvantages.

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Stonefish Biology Research Paper

3 pages (750 words) , Download 3 , Research Paper

This creature best exemplifies how deceiving an animal can be and how progressive its defense system could be. More than the perceptively attention-grabbing appearance it has, the stonefish is one of the most venomous and dangerous species found in the vast waters.

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The role of procoagulant microparticles in haemostasis Biology Essay

6 pages (1500 words) , Download 2 , Essay

MPs are mall membrane vesicles emanating from activated cells. They act as mediators of cell to cell communication by transferring cell surface receptors from origin cells to target cells. Microparticles range in diameter from 100-1000 nm, but mostly have a diameter of 200 nm.

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Biology Essays