Free Biology Essay Examples and Topics | Page 65

4 pages (1000 words) , Download 2 , Research Paper

Background The reconstruction of lost or damaged bones has continued to be a significant problem in the reconstruction surgery. Previously, bone reconstruction surgeons made use of artificial tissues to repair the damaged bones. However, artificial tissues have proved to be problematic to patients, which have encouraged surgeons to look for alternatives approaches.

Preview sample

The Ebola Virus Research Paper Biology Research Paper

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

Serious illness or death is yet to be reported on the Reston species; yet, it infects humans. The premise of this paper is to study the Ebola virus and discuss all aspects of the disease: when it was discovered, causes, symptoms, mode of transmission and its prognosis.

Preview sample

sponsored ads

Hire a pro to write
a paper under your requirements!

Win a special DISCOUNT!

Put in your e-mail and click the button with your lucky finger

YOUR PRIZE:

—

Apply my DISCOUNT

Various Mechanisms Used by the Nervous System to Guide Axonal Growth Biology Essay

4 pages (1000 words) , Download 2 , Essay

They migrate to their correct locations and send out axons that find their way to the appropriate target sites for the formation of synapses (Tessier-Lavigne & Goodman 1996; U.S. Congress 1990). The process of axonal growth is believed to be genetically predetermined, and the nervous system guides the growing axons using a complex array of mechanisms that use various ligands and receptors (U.S.

Preview sample

Smithsonian Tropical Research Institute in Barro Colorado, Republic of Panama Biology Essay

6 pages (1500 words) , Download 2 , Essay

It went on to become one of the first biological reserves and is now the oldest tropical research station and concerns not just the Panama but also the tropics (National Research Council; The Smithsonian Institution). This paper discusses the history of STRI in Barro Colorado, tracing it from its very beginning to its current status.

Preview sample

Northern Blotting Paper Biology Research Paper

3 pages (750 words) , Download 8 , Research Paper

Free

In addition, the technique is also used to determine the factors that regulate gene expression such as nutritional, hormonal or environmental agents (Trayhurn). A group of three scientists at the Stanford University, James Alwine, David Kamp and George Stark developed this technique in the year 1977.

Preview sample

Perspectives on Sexual and Reproductive Health Biology Essay

4 pages (1186 words) , Download 2 , Essay

Free

There are three centers within New Jersey where willing blood donors can visit and donate blood. Blood donated within these three centers is used in the treatment of premature babies, leukemia cases, trauma victims, burns, cardiac cases, and related cancer cases. The blood center offers services to a variety of hospitals within New Jersey.

Preview sample

Major Issues on Eugenics Biology Essay

3 pages (1101 words) , Download 5 , Essay

A newly formed organization, the Sociological Society of London, was being lectured on the topic of eugenics. During this lecture, Galton defined eugenics as “the science which deals with all influences that improve the inborn qualities of a race” (Aldrich et al, 214). This was likely the beginning of the eugenics movement.

Preview sample

The Legalization Of Genetically Choosing The Feature of Child Biology Research Paper

3 pages (750 words) , Download 2 , Research Paper

In fact, plants and animals could be developed through genetic modification to produce essential vitamins and minerals and organs for human health benefits; and create new varieties for botanical curiosities (Davies 122; Nakatsuka et al. 231; Gock et al. 9).

Preview sample

Qatar's CO2 Emissions Biology Research Paper

4 pages (1000 words) , Download 2 , Research Paper

Free

[Student’s Name] [Instructor’s Name] [Course Title] 15 April 2012 Qatar's CO2 Emissions Qatar has achieved remarkable economic growth over the years by capitalizing on its natural resources of oil and gas. While it boasts of being one of the richest and developed countries of the world, it also has the highest per capita carbon footprint owing to its use of fossil fuels.

Preview sample

Malaria as the Greatest Human Affliction in the World Biology Research Paper

5 pages (1402 words) , Download 2 , Research Paper

Free

Each year, malaria claims the lives of more than two million victims. However, 80% of the total number is children from sub-Saharan Africa. It causes fever, malaise, anemia, and death (David 1). The greatest impact is, however, on the children. This is because; most children have not yet built up the necessary immunity needed to combat severe malaria infection.

Preview sample

A Cladogram of Molting Animals Biology Research Paper

3 pages (1097 words) , Download 2 , Research Paper

Free

Paraphyly was evident in Porifera. It showed that Calcarea (calcareous sponges) appear to have closer affinities to other metazoans than fellow poriferans the siliceous sponges (both Hexactinellida and Demospongiae) which inevitably showed a great amount of radiation between these two groups (Adams, McInerney and Kelly 34).

Preview sample

Congenital Adrenal Hyperplasia Biology Term Paper

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

In corollary, a carrier or a person with CAH can have an offspring with CAH if the other parent is a carrier or with CAH. It is important to note that the inheritance of CAH is not sex-dependent. Molecular basis of CAH Among the types of CAH are 21-hydroxylase, 17-hydroxylase, 11-beta-hydroxylase and 3-beta-hydroxysteroid dehydrogenase deficiencies, which cause aldosterone depletion and salt wasting, with 21-hydroxylase deficiency being the most common (Wilson n.

Preview sample

Omnivores Dilemma - A Natural History of Four Meals is a Nonfiction Book by Michael Pollan Biology Essay

8 pages (2000 words) , Download 2 , Essay

Free

Food chains are usually applied in ecological modelling, which provides a continuous variable for measuring the passage of energy through various linear linkages from the lowest to the highest trophic feeding levels. Long food chain lengths are unstable with increasing length increases with the ecosystem size and reduction of energy at every successive level.

Preview sample

What Causes Cancer Mutations Biology Essay

6 pages (1500 words) , Download 2 , Essay

Free

What Causes Cancer Mutations? Cancer is known as malignant neoplasm, the hallmark characteristic involves uncontrolled proliferation of cells. Under normal conditions cells grow, divide and die, but in a genetic defect called mutation occur in cancer cells leading to the formation of an abnormal DNA.

Preview sample

Lactobacillus Bulgaricus vs E.Coli Biology Essay

3 pages (750 words) , Download 2 , Essay

Such compounds are the basis for characterization for these microorganisms. The effects of these compounds are different to species that have come into contact with them. This roughly explains the type of microorganism. From the standpoint of causing harm to the host, microorganisms can be described as pathogenic-those that cause diseases or non pathogenic-those that do not.

Preview sample

Louis Pasteur and Robert Koch Biology Case Study

4 pages (1000 words) , Download 2 , Case Study

As a matter of fact, it is purported that Jenner was not the first person to suggest the relationship between immunity and smallpox. Louis Pasteur In my opinion, one of the important personalities, who have made a great contribution not only in the field of microbiology, but also in human health, is Louis Pasteur.

Preview sample

Biology Essay on Diabetes Biology Essay

10 pages (2500 words) , Download 2 , Essay

Free

The author gives recommendations regarding treatment. Solutions were found through series of studies and experiments as scientists try to uncover the whole existence of diabetes starting off from its onset. They found out that oxidative stress exist that further push the condition of diabetes and leads to the onset of complications.

Preview sample

Sodium Intake and PMS Biology Research Paper

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

Free

PMS symptoms occur in women the days before their period starts every month (roughly 7 to 10 days before) in a phase known as the luteal phase of the menstrual cycle and they disrupt the normal functioning of a person. They actually improve during the menstrual period days and stop once menstruation is complete.

Preview sample

Alzheimer's Disease Paper Biology Essay

10 pages (2500 words) , Download 3 , Essay

The disease is more common in people above 65 years of age; women being affected more than men. The frequency and risk for this disease increases with increasing age. Alzheimer’s disease progresses slowly, increasing with age and can lead to vast changes including sometimes even a total change in behavior.

Preview sample

Genetically Modified Crops Biology Essay

4 pages (1000 words) , Download 3 , Essay

Using chemical messages, cells would be instructed to perform their intended functions including making of proteins or enzymes. Scientists could introduce a foreign gene so as to make the altered cell produce new enzymes or proteins for performance of new functions.

Preview sample

The Ecological Impact of the Destruction of Wetlands Biology Research Paper

4 pages (1000 words) , Download 2 , Research Paper

Wetlands are typified by exact vegetation, scrupulous soils and the existence of water for a minimum period in the year. A wetland might contain all of this distinctiveness or merely a single or double of them. Floodplains, quagmires, bogs, deltas, sloughs, peat lands, and other water catchment places are all kinds of wetland.

Preview sample

Human Pheromones/Hormones and Behavior Biology Research Paper

8 pages (2000 words) , Download 4 , Research Paper

The studies show evidence of modification of human behavior, mood, chemical balances in the body and the menstrual cycle. This research provides clear evidence that pheromones are present in humans, although research is needed to determine the exact chemicals involved, and how these affect behavior, most of the studies examined only an indirect relationship.

Preview sample

Molecular Changes in Oral Cancer Progression and Their Underlying Mechanisms Biology Essay

10 pages (2500 words) , Download 2 , Essay

up to 90% of all oral cancers are found to be squamous cell carcinomas (SCC).2, 3 The increased incidence of oral cancer is found to be associated with increasing age, with most of the cases being reported from those between 50 to 70 years of age.4 Most of the oral cancers reported often involve the oropharynx, tongue and the floor of the mouth.2 A large number of risk factors have been identified that are responsible for the increased incidence of oral cancer, which has a multifactorial etiology.3Most risk factors are usually associated with diet and lifestyle related habits.

Preview sample

Systemic Lupus Erythematosus Biology Research Paper

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

What happens is that in some people with genetic susceptibility, their bodies’ immune systems attack the cells and tissues which lead to inflammation and damage of the tissues. In Systemic Lupus Erythematosus, the damage which occurs on the tissues is caused by immune complexes and antibodies.

Preview sample

Melation and Aging Research Paper Biology Research Paper

4 pages (1000 words) , Download 2 , Research Paper

Abstract Melatonin is a hormone produced in the brain from the amino acid tryptophan within the pineal. It is a naturally occurring compound and it is found in animals, human beings, plants and microbes. The general level of melatonin vary greatly throughout one’s life cycle, the first time melatonin is secreted is when a child is three months old and that is when most people starts to sleep.

Preview sample

White Blood Cells (WBC) Biology Research Paper

3 pages (750 words) , Download 2 , Research Paper

White Blood Cells (WBC). Our Blood consists of Red and White Cells which have important role in maintaining our body healthy and keeping bodily metabolisms intact. White Blood Cells (also called leucocytes) are responsible for keeping our immune system working all the time to prevent the intrusions of foreign materials or infectious diseases into our body.

Preview sample

Outlining and Identifying the Characteristics of the Flora and Fauna Biology Essay

2 pages (500 words) , Download 2 , Essay

Free

A report Outline Identifying the Characteristic of The Flora and Fauna of a Rocky Shore Profile at Rhosneiger, Wales Name: Institution: Results The presence of different flora and fauna species on a rocky shore are dependent on the tidal water level, chemical balance and interactions with other species in each zone along its profile (Denny, M.W.

Preview sample

Evolution of Human Parental Care and Recruitment of Juvenile Help Biology Research Paper

3 pages (750 words) , Download 2 , Research Paper

The participation of juveniles in cooperating with other adults their parents and siblings in order to benefit from exchange of resources and labor. Provision of juvenile help develops a pattern of division of labor and the sharing of food that enable the sociability and subsistence of humanity (Karen 120).

Preview sample

The Big Weight Dilemma Biology Term Paper

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

This paper will explore this issue, focusing particularly on the context by which the problem is a public health concern. Its negative impact on the population, particularly among the younger generation will also be explored. Background The standard of measurement that determines whether an individual is overweight is the Body Mass Index or BMI, which measures body size against the height of an individual.

Preview sample

Streptococcus pneumoniae Biology Research Paper

5 pages (1250 words) , Download 4 , Research Paper

Free

Streptococcus pneumoniae Streptococcus pneumoniae is among the group of pathogenic micro-organisms that cause life threatening diseases in human beings. The organism belongs to Kingdom of Bacteria (Procaryotae), phylum Firmicutes, and class bacilli. Streptococcus pneumoniae is classified under the Order of Lactobacillales, family Streptoccaceae and Genus Streptococcus.

Preview sample

Fight or Flight Response Biology Assignment

4 pages (1000 words) , Download 2 , Assignment

He cautiously moved forward to examine the disturbance, the source of his curiosity. The next moment he was in a state of shock. The heartbeat accelerated and he could feel his heart in his mouth. The fear injected by that deadly black rattling snake right in front of him.

Preview sample

Bacteriocins and Their Impact on Our Lives and Agriculture Biology Article

8 pages (2000 words) , Download 2 , Article

777). Within this simple description of a set of proteins lies a new story in the continuing search for weapons in the fight against bacteria. The seeds for the possible antagonistic interaction between competing bacteria were planted by Pasteur and Joubert in 1877, through their observation of the inhibitory action of some strains of Escheria coli (E.coli) on the growth of Bacillus anthracis in infected animals.

Preview sample

The Neopteran Questions for an Exam Biology Essay

6 pages (1500 words) , Download 2 , Essay

The larval immature stages are separate ecologically from the adult stages avoiding competition and thus encouraging diversification. The juveniles of all palaeopteran insects called naiads are freshwater aquatic having longer lives compared to the short-lived adults who are aerial/terrestrial.

Preview sample

Discovery of Down Syndrome and Its Symptoms Biology Essay

3 pages (921 words) , Download 3 , Essay

Free

Premium+

It is essential to state that down syndrome (DS) is a genetic disorder that hampers the mental and physical development of those afflicted. It results when an individual has an extra 21st chromosome, i.e. a total of 47 chromosomes, rather than the usual 46 chromosomes. This condition is also known as trisomy 21.

Preview sample

Influence of 19th Century Worldviews on Charles Darwin Biology Essay

8 pages (2549 words) , Download 2 , Essay

Free

It is essential to state that there had been considerable intellectual and scientific ferment in the 19th century, around the time of Darwin's work and prior, that had a considerable impact on Charles Darwin and his theory with regard to evolution, natural selection, and the survival of the fittest.

Preview sample

Symbiotic Relationship Biology Essay

3 pages (750 words) , Download 2 , Essay

Symbiotic relationship Name Institution Date Symbiotic relationship Symbiotic relationship entails two entities that benefit from each other in a mutual way. A positive correlation is the determining factor in the above cooperation. Furthermore, two entities that need each other for survival and prosperity hold the name symbiosis.

Preview sample

Environmental Factors That Affect the Mode of Dispersal in Plants Biology Essay

8 pages (2000 words) , Download 2 , Essay

While dispersal is the sole factor that accounts for the movement of plant and animal species among different isolated habitats, other local influences such as environmental sorting as well as biotic interactive processes contributes significantly in determining its persistence.

Preview sample

Human and Plant Physiology Biology Coursework

4 pages (1000 words) , Download 4 , Coursework

Leaves are thin, and this makes the diffusion of gases (oxygen and carbon dioxide) during gaseous exchange short. The midrib and the wide network of veins offer good support for the blade or the thin lamina. The broad network of veins facilitates efficient transportation of materials to and from the photosynthesizing cells.

Preview sample

Living Environment in Kalahari Biology Essay

8 pages (2000 words) , Download 2 , Essay

The seasons have become unpredictable with other weather conditions such as rainfall, storms and hailstorms becoming unpredictable. Environment has therefore, been affected with forests and some water catchment areas becoming extinct. The repercussions have not just affected humans but even animals in the wilderness.

Preview sample

Effect of trampling on length of Cranesbill leaves Biology Coursework

4 pages (1000 words) , Download 2 , Coursework

From the mathematics we note that the standard deviation can tell us something of the spread of data for a particular area in the field. Above we get the mean and the standard deviation for the measured leaf lengths along each measurement point in the transect.

Preview sample

Lyme Disease and How the Immune System Responds Biology Research Paper

8 pages (2000 words) , Download 4 , Research Paper

The most important organism of this genus is Borrelia Burgdorferi. The organism is transferred to the humans by the bite of ticks. This disease has been considered as the most common disease transferred by ticks so far. The signs and symptoms of the disease are divided into early and late.

Preview sample

The Tear of Nature Biology Essay

9 pages (2250 words) , Download 2 , Essay

Their research centered primarily on jackals, brown hyenas and lions, as well as other African carnivores. Cry of the Kalahari gives a personal account of the biologists’ encounters with a multitude of animals and showcases their struggles to abode and work in such an unforgiving and harsh environment (Owens, M.

Preview sample

Ecological Issues: An analysis of a Cry of the Kalahari Biology Essay

6 pages (1500 words) , Download 3 , Essay

Free

Name: University: Course: Tutor: Date: Ecological Issues: An analysis of a cry of the Kalahari The cry of the Kalahari is a book documenting the lives of two young biologists in the Kalahari Desert who went out to conduct a research. The book documents the activities of the two researchers who after meeting in college, learning together and getting married are motivated by the ecological issues of the time to study animals and the environment and how they can help protect it.

Preview sample

Symptoms of Malaria Biology Coursework

4 pages (1352 words) , Download 3 , Coursework

Free

However, Quinine and Chloroquine are the best-known drugs used to prevent malaria. Doctors prescribe quinine to treat mild cases of malaria. Quinine works by killing the parasite that causes the blood infection (Monson, 2010). Quinine is available in capsules and is taken every eight hours for consecutive seven days.

Preview sample

Genes and Environment Biology Research Paper

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

Free

The present research has identified that chemically genes comprise of the DNA or de-oxy-ribonucleic acid and RNA or the ribonucleic acid. These are called the genetic material of the cell and are made up of a nitrogen base, a pentose sugar, and the phosphate molecule. DNA is a double helix structure while the RNA is a single helix structure in a normal cell.

Preview sample

Oogenesis: The Formation of the Egg Biology Essay

4 pages (1189 words) , Download 4 , Essay

Free

The most important consequence of meiosis is that it produces an enormous amount of genetic variation through the production of different combinations of chromosomes. the completion of meiosis does not necessarily mean that gametes have formed. Meiosis produces four haploid cells. These cells must now mature into functional gametes, eggs and sperm.

Preview sample

Nuclear Power Research Paper Biology Research Paper

3 pages (750 words) , Download 2 , Research Paper

A wind turbine power generator extracts the energy from the wind and converts to the electrical energy for further utilization. In the similar way, nuclear power is extracted by splitting the nuclei of the elements (most likely Uranium). Nuclear energy is evolved by splitting the nuclei of the atom of certain elements to corresponding subatomic particles; protons, neutrons and electrons.

Preview sample

Interspecific and Intraspecific Competition Among Alfalfa in in Shaded and Unshaded Pots Biology Research Paper

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

Free

Interspecific and Intraspecific Competition Among Alfalfa in Shaded and Unshaded Pots Abstract The objective of this lab was to detect the differences of interspecific and intraspecific competition in the alfalfa plant. This was accomplished by putting alfalfain combinations of 25 seeds, 50 seeds, 25 alfalfa with 25 tomato and 25 alfalfa with 25 rye.

Preview sample

Molecular Basis of Disease Biology Lab Report

8 pages (2000 words) , Download 2 , Lab Report

Cancer are abnormal human cells characterized by “unregulated growth, impaired cellular differentiation, invasiveness and metastatic potential” (Coleman, The Molecular Basis of Human Cancer, 2002, p.3). These characteristics of cancer cells have been used to clinically distinguish cancer cells from normal cells during diagnosis and treatment.

Preview sample

Commensal and Parasitic Barnacles Biology Term Paper

6 pages (1500 words) , Download 2 , Term Paper

Free

(Name) (Professor) (Subject) (Date) Commensal and Parasitic Barnacles Barnacles are arthropods belonging to class Cirripedia under subphylum Crustacea. It is therefore related to crabs and other forms of sea crustaceans. The only difference between barnacles and the other arthropods is that the former have sessile species, or species that cannot move from one place to another.

Preview sample

Biology Essays