Natural Sciences Essay Examples and Topics. Page 12

2,340 samples

The Histopathology Laboratory: Special Stains

The Masson's trichrome is commonly used to reveal the architecture of tissues and in the preparation of frozen sections. The Masson's trichrome stain was used in the staining of normal uterus and the uterus fibroid.
  • Subjects: Biology
  • Pages: 8
  • Words: 2077

Commiphora Molmol and Boswellia Papyrifera Plants

The next step in the experiment was also significant in ensuring the chemical components in the extracts are known and that the anti microbial activity is attributed to each of them separately.
  • Subjects: Biology
  • Pages: 3
  • Words: 823

Evidence of the Evolutionary Process

The unearthing of fossils and their study, biogeography which informs us of similar species of trees and animals in various parts of the world and the reasons for such an eventuality, embryology and the study [...]
  • Subjects: Evolution of Humans
  • Pages: 7
  • Words: 2032

Benthic Macroinvertebrate

The sampling of Macroinvertebrate constitutes a very important aspect of analyzing a habitat due to the fact that Microinvertebrates are fundamentally vital in defining the health of streams where they habour.
  • Subjects: Biology
  • Pages: 5
  • Words: 1756

Museum Genetic Presentation

When this condition is violated, the population is opened allowing individuals to move from one population to another hence creating a net flow of genes which results to genetic variations and consequently, to evolution.
  • Subjects: Genetics
  • Pages: 4
  • Words: 1141

Osmosis Transport Across the Cell Membranes

It is the difference in concentration of water across a semi-permeable membrane drives the process. The process is facilitated by the disparity in potential of water across the semi-permeable.
  • Subjects: Biology
  • Pages: 2
  • Words: 322

Forensic Procedures: Hairs and Fibres

The continued cases of robbery, murder and rape have been countered with the adoption of various forensic procedures to bring the crime perpetrators to book. The collection of hairs and fibres is usually the first [...]
  • Subjects: Biology
  • Pages: 7
  • Words: 2067

Process of Gene Expression

One of the major mechanism through which gene expression is altered is addition where a base pair is added to the normal sequence hence changing the specificity of the protein that the code specifies.
  • Subjects: Biology
  • Pages: 4
  • Words: 1123

Evolution Development: Introducing New Species

The collection of relevant information gave the basis for the introduction of the organism about the evolutionary development and analysis of the characteristics typical of already existing species.
  • Subjects: Biology
  • Pages: 7
  • Words: 2135

Environmental Microbiology Overview

When managed properly in accordance with the five principles of good management, they provide a number of benefits that include: Detoxification of wastewater Capturing renewable resources such as energy and water Sensing pathogens in the [...]
  • Subjects: Biology
  • Pages: 12
  • Words: 3298

An Effective Hazard Management

Given the transportation of the substance in molten form, there is the likelihood of violent reaction with other substances like water and hence result in explosions in addition to producing gases that are flammable.
  • Subjects: Chemistry
  • Pages: 11
  • Words: 2968

UNESCO Paper: The Grand Canyon National Park

The springs and seeps out of the canyon walls sustain eleven percent of the plants in the park. In some of the management activities, local citizens and volunteers have been involved.
  • Subjects: Geography
  • Pages: 6
  • Words: 1732

Electronic Application of Inorganic Polymers

Most inorganic polymers come with different properties and characteristics hence the reason why they are used in different ways and for different things.
  • Subjects: Chemistry
  • Pages: 6
  • Words: 1786

The Concept of DNA Cloning

In the approach based on cells both the replicating molecule or the biological vehicle known as the vector and the foreign DNA fragment are cut using the same restriction enzyme to produce compatible cohesive or [...]
  • Subjects: Genetics
  • Pages: 5
  • Words: 1238

Biot- Management Laboratory: Rat GLP

The vehicle for the test item was water and the test item was in powdered form, 98% pure and was stored below -200C and had an expiry date of Aug 2011.
  • Subjects: Biology
  • Pages: 7
  • Words: 1951

Artemia sp.: Morphology and Lifecycle

The male possesses a pair of the posterior penis, while the female has a conspicuous brood pouch located behind the thoracopods.
  • Subjects: Zoology
  • Pages: 2
  • Words: 686

Advanced Pathophysiology: Genetic Technology

In accordance to Tay-Sachs disorder, the specialist is likely to provide the following information: the origin of the disorder, what factors contribute to the occurrence of the disorder, characteristics of the disorder, treatment if available [...]
  • Subjects: Genetics
  • Pages: 6
  • Words: 1952

Process of Converting Bauxite Into Aluminium

Therefore, with the help of a refining process, Alumina is extracted from bauxite which in turn is converted into Aluminium metal with the help of smelting process. The process of refining the metallic ore in [...]
  • Subjects: Chemistry
  • Pages: 4
  • Words: 965

Antibiotic Resistance in Bacteria

With the help of a pipette, a measure of 100 L of E.coli culture was spread at the surface of plates of minimal medium agar.
  • Subjects: Biology
  • Pages: 3
  • Words: 1158

Darwin’s Ideas of Natural Selection and Evolution

The hierarchical classifications can also be applied to the tree, while phylum, classes, orders, and the other elements of the taxonomy are represented by various locations in the branches In addition to the described elements, [...]
  • Subjects: Evolution of Humans
  • Pages: 3
  • Words: 827

Estimation of Protein Concentration

In the determination of the concentration of proteins in different body tissues, we carried out various laboratory experiments; in which various body tissues were tested for protein content.
  • Subjects: Biology
  • Pages: 3
  • Words: 980

Resistant Bacteria Overview and Analysis

As the population of the world increases on a daily basis, it is becoming more and more important for researchers and other stake holders such as government bodies and members of the medical community to [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 566

Hazards that Remain after Industrial Sites Are Closed

It would be important in this report to analyze the chemical reaction nature of the wastes involved and expected effects to the environment keeping in mind the stream aquatic life and the human livelihood downstream.
  • Subjects: Chemistry
  • Pages: 5
  • Words: 1329

Cell Communication Overview and Analysis

A signal on a cell's surface is transformed into a particular cellular response in a sequence of responses referred to as a signal transduction pathway. The nature of a signal molecule is like that of [...]
  • Subjects: Genetics
  • Pages: 4
  • Words: 1127

City of Perth, Australia Exploration

The city of Perth in Australia has a rich heritage in terms of cultural values and attitudes which define the culture of the city and this is evidenced by the exotic buildings and open spaces [...]
  • Subjects: Geography
  • Pages: 10
  • Words: 2936

Warm Water and the Characteristics of Plaster

The sample which implied using chilled water has shown the latest initial, and effect of retardation) and final set ). 015 for the warm water sample, and 0.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 385

Iran as the First Dictator Country

The three reasons that Iran has become the first dictator country in the world are the absence of basic freedom, censorship of the media, and women's rights.
  • Subjects: Countries Studies
  • Pages: 2
  • Words: 661

Shape Memory Alloys (SMAs)

The first mentioning of shape memory materials was with the discovery of martensite in 1890, which was the first step for phenomenal discovery of the shape memory effect.
  • Subjects: Chemistry
  • Pages: 4
  • Words: 1094

T Cells: Definition and Functions

The na ve T cells in the secondary lymphoid; when they encounter an antigen presented on MHC of dendritic cells, they differentiate and proliferate into effector T cells, CD8 or CD4 T cells depending on [...]
  • Subjects: Biology
  • Pages: 3
  • Words: 1002

Human Evolution and Animal Extinction

The recent scholarly findings prove that invasions of Homo sapiens to the Austronesian and American continents were the major factors that conditioned the extinction of numerous animal species.
  • Subjects: Evolution of Humans
  • Pages: 3
  • Words: 825

Biotechnology in Response to SARS

Some of those outstanding responses that attempt to define biotechnology include the application of integration of biology and technology, a promising field that deals with using organisms, and a field of science that uses biological [...]
  • Subjects: Biology
  • Pages: 4
  • Words: 1082

Application of Catalyst and Energy Production

This work entails developing a catalyst coupled with the construction of a good reformer in the field of catalysis. The catalyst is released at the end of the reaction and may be used again.
  • Subjects: Chemistry
  • Pages: 35
  • Words: 8961

Microscopy and Cell Anatomy

A slide cover slip was placed on top and then the slide was observed under bright-field microscopy at the different magnifications of the microscope.
  • Subjects: Biology
  • Pages: 4
  • Words: 1257

Fuel Cell as an Alternative Energy Source

For the fuel cell to operate continuously the reactants must flow into the cell, and the products out of the cell and the electrolyte must remain within the cell.
  • Subjects: Chemistry
  • Pages: 4
  • Words: 1091

“Why Study Photosynthesis?” by Devens Gust

By revealing the information about the details of photosynthesis, Gust encourages people to investigate and to develop the innovated techniques thus applying them to the problem solution in the different spheres of life.
  • Subjects: Biology
  • Pages: 2
  • Words: 565

Evolution and Natural Selection

The major topic addressed by the article is the impact of natural selection, developmental process, and genetic makeup on the variations and existence of organic diversity. This will be useful in understanding the process of [...]
  • Subjects: Genetics
  • Pages: 2
  • Words: 602

The Evolution of Insect Wings

This theory states that wings developed from a section of the legs of wingless insects. According to Carpenter, wings developed from gills through the evolution of gene expression with similarities between winged and wingless insects.
  • Subjects: Biology
  • Pages: 10
  • Words: 2695

Sex Ratio Adjustment in Cooperative Breeders

The challenge that arises here is the understanding of how the selection is acting on the sex ratio of invertebrates. Other secondary sources of information that were used included the searching of the web and [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 831

The Effect of Colonization and Dispossession

Warwick Anderson additionally states that the history of aboriginal health requires understanding of both the impact of colonization and the beginning of white nation-state.
  • Subjects: Geography
  • Pages: 4
  • Words: 1362

Origin of Life Hypotheses Analysis

The theory of prebiotic soup seemed to fill in the gap when Miller passed the electricity through the mixture of "water, methane, hydrogen, and ammonia" and obtained the "soup" in which the primitive life forms [...]
  • Subjects: Evolution of Humans
  • Pages: 2
  • Words: 547

Bacterial Resistance to Antibiotics

There is a concept called "selection" where the drugs can eliminate those that have no resistance to the antibiotic and leave behind those that have developed resistance to the bacteriolytic effect of the drug.
  • Subjects: Genetics
  • Pages: 5
  • Words: 1607

Animal and Reproductive Cloning: Current Events

It is the nucleus that contains the DNA of the donor. Its DNA structure is similar to the donor."The blastocyst is then transferred to the uterus of a surrogate mother".
  • Subjects: Genetics
  • Pages: 2
  • Words: 636

Silver Characteristics as a Chemical Element

In addition, silver is commonly formed in a wide variety of hydrothermal deposits and is associated with gold and the base metals such as copper, lead and zinc. Increase in silver concentration is an indicative [...]
  • Subjects: Chemistry
  • Pages: 3
  • Words: 882

Reproductive Biology: Ovarian Surface Epithelium

The germinal epithelium was a preferred term over OSE because this outer ovarian epithelium was assumed to be the source of germ cells in embryos and adults, and besides this, pre-follicular and granulosa cells that [...]
  • Subjects: Biology
  • Pages: 40
  • Words: 10029

Human Circulatory System and Evolution

The coronary circulation involves the movement of blood through the tissues of the heart while the systemic circulation involves taking blood to all the rest of the body tissues and back to the heart".
  • Subjects: Biology
  • Pages: 2
  • Words: 534

Mutation and Variation in Dendryphiella

This paper elaborates the living conditions of the marine fungi, the studies that have been done so far on them, and the possibilities for the future finally discussing the results of the study being done [...]
  • Subjects: Biology
  • Pages: 14
  • Words: 4109

Sodium Chloride – Science of Salt

Sodium chloride is a very important compound and it has thousands of uses in real life, few of them are as follows: NaCl is a raw product that is commonly used in the production of [...]
  • Subjects: Chemistry
  • Pages: 3
  • Words: 852

Research on Chromosomal Aberrations

However this is not seen in Drosophila as there is no crossing over in the male but inversions are seen more than translocations and fertility is decreased with single chromatid exchanges.
  • Subjects: Genetics
  • Pages: 2
  • Words: 336

The Role of Plant Genetic Engineering in Global Security

Although it can be conveniently stated that the adequacy, abundance and reliability of the global food supply has a major role to play in the enhancement of human life, in the long run, they influence [...]
  • Subjects: Genetics
  • Pages: 8
  • Words: 2185

Oceanography: Research on the Albatross

This research will concentrate with the biological studies of the oceans which generally refer to the study of the ecological characteristics, social and environmental interactions of the aquatic organisms in the marine.
  • Subjects: Zoology
  • Pages: 5
  • Words: 1719

Cloning of Plants at the Botanic Garden

Cloning is now considered to be an efficient means to grow plants in being the result of vegetative propagation while seeds are the result of the natural reproductive phenomenon of plants.
  • Subjects: Biology
  • Pages: 2
  • Words: 580

Journal of Cultural Geography Studies

In 1979, Ray and Pat engaged Alvar Carlson, who was a professor of geography at as the editor in charge of the journal of cultural geography at the BSGU.
  • Subjects: Geography
  • Pages: 3
  • Words: 1148

“Sperm Competition in Fish” by Taborsky

The fundamental theory of the study proposed that the time, space, and opportunity of the fishes were the main determinates of the reproductive pattern of male fishes in the context of sperm competition.
  • Subjects: Biology
  • Pages: 2
  • Words: 548

Beginnings of Life: Different Approaches

However, the fundamental question lies in the paradox of the beginning of Life on earth. It dealt in particularities of life, and after identifying the particularities of the life of organisms, the next step was [...]
  • Subjects: Anthropology
  • Pages: 5
  • Words: 1428

“Life Story” by M. Jackson

Hence, in the second half of the twentieth century the most of the attention was concentrated on revealing the secret of a gene.
  • Subjects: Genetics
  • Pages: 3
  • Words: 852

Insect Evolution

Based on this idea and the observation that the absence of flight is beneficial to some species of stoneflies the researchers asked the question if insects lose flight before they lose their wings.
  • Subjects: Biology
  • Pages: 3
  • Words: 1103

A Brief Discussion of Animal and Plant Cells

In plants, important cells such as the parenchyma cells help to store materials and support the process of photosynthesis. Cells found in the leaves of most plants fundamentally assist the plant to absorb the necessary [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 654

Evolution: Three Different Modes of Selection

The main question being asked and analyzed in the research is how selection occurs, how it contributes to evolution processes, and three different modes of selection.
  • Subjects: Evolution of Humans
  • Pages: 2
  • Words: 748

The Science About the Experiments: Colloidal Systems

This Debye length depends on the concentration of the colloidal system and charge on the colloidal particles. This works on the principle of scattering of light by the particles in the colloidal system.
  • Subjects: Chemistry
  • Pages: 5
  • Words: 1505

Significance of Human Genetic Engineering

The gene alteration strategy enables replacing the specific unwanted genes with the new ones, which are more resistant and freer of the particular ailment, hence an essential assurance of a healthy generation in the future.
  • Subjects: Genetics
  • Pages: 5
  • Words: 1396

Biogeography: Kary Mullis’ Development

The identification of biological material during the study of local and co-located biocenosis is of serious importance to biogeographers. It seems clear that this technology has a high potential for biogeographical studies because PCR allows [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 357

The Study of the Southern Hemisphere

The study of the Southern Hemisphere is of serious importance in Earth research because this area is associated with attractive mechanisms of dispersal of living beings and geographic and thus reproductive isolation of species.
  • Subjects: Biology
  • Pages: 2
  • Words: 389

Eruption of Mount Saint Helen Volcano

Helens volcano, looking at its history, the explosion, the immediate consequences of the eruption, and the historic impact on the climate and human life.
  • Subjects: Archeology
  • Pages: 4
  • Words: 1245

Automation in Horticulture

A farmer can situate the sensor and controller alongside the crops and outside, respectively, to allow the effective tracking of the underlying conditions and to adjust input trigger values.
  • Subjects: Agriculture
  • Pages: 6
  • Words: 1772

Bee Colony Collapse Disorder (CCD)

With the emergence of CCD and the various campaigns that followed in order to save the bee from extinction, several people have considered keeping bees in the urban centers.
  • Subjects: Zoology
  • Pages: 4
  • Words: 1091

Urban Ethnography in Grazian’s “On the Make” Book

Getting into a particular atmosphere, people try to conform to the order established in it. Thus, life in a particular city obliges people to comply with the internal orders established in it.
  • Subjects: Anthropology
  • Pages: 1
  • Words: 279

Al Garhoud Community Overview

The culture of Al Garhoud people is considered one of the most distinctive cultures in the Kingdom of Saudi Arabia as well as in the Middle East.
  • Subjects: Anthropology
  • Pages: 4
  • Words: 1081

Unlearning Race as Biology

It is scientifically proven that race is not a reliable shortcut or proxy but simply a distraction that does not let see the real and the whole picture of one's condition and situation.
  • Subjects: Biology
  • Pages: 2
  • Words: 610

Vespa Mandarinia as an Invasive Species: Overview

On the contrary, it is the unique features that form the body of V.mandarinia that determine the increased research interest and justify the environmental position of the hornet as a killer.
  • Subjects: Biology
  • Pages: 11
  • Words: 3218

Geographical Research: Russian Federation

Among others, the state has the deepest lake in the world, Lake Baikal, and the longest European river, the Volga. The large size of the country has traditionally determined the trade industry of the state.
  • Subjects: Geography
  • Pages: 2
  • Words: 635

Transgenic Organisms and Evolution

As a rule, the foundation of transgenic technologies lies in the plane of change in the genome of the reference species.
  • Subjects: Biology
  • Pages: 5
  • Words: 1505

Environment and Land Conflict in Brazil

The government has a role to control and implement new policies and programs that have the potential to improve the experiences of more poor citizens.
  • Subjects: Countries Studies
  • Pages: 3
  • Words: 822

“2019 Corn Harvest: Will It Ever End?” by Kennedy

The author of this article describes the corn harvesting campaign of 2019 in the United States and the substantial issues that occurred during this campaign in particular areas of the country.
  • Subjects: Agriculture
  • Pages: 1
  • Words: 321

Strawberry Pest and Diseases Management

Mechanical and physical control entails the physical removal of pests and applies to the management of sap beetles. The chemical control of pests in strawberries applies to the management of insects such as flower thrips.
  • Subjects: Agriculture
  • Pages: 3
  • Words: 943

Microbial Interactions in the Gut of Canadian Geese

The nature of microbiota tends to affect the fitness and survival of the host in a number of ways. The knowledge of host-microbial interactions in the gut of Canadian geese becomes an opportunity to take [...]
  • Subjects: Zoology
  • Pages: 4
  • Words: 887

Climate Zones of the United States

In general, the majority of the territory belongs to a temperate climate, humid in the east and dry in the west, with hot summers and cold winters. The tropical climate can be seen in Florida [...]
  • Subjects: Geography
  • Pages: 1
  • Words: 325

Geography of the United States

It is essential to learn the geography of the United States because it stands as one of the biggest countries in the world.
  • Subjects: Geography
  • Pages: 1
  • Words: 286

Female Aggression in Flies and Humans

In the animal world, they compete for the opportunity to mate with females, since the continuation of their genus depends on the number of mates.
  • Subjects: Biology
  • Pages: 3
  • Words: 1026

Is the World Ready for Genetic Engineering?

The process of manipulating genes has brought scientists to important discoveries, among which is the technology of the production of new kinds of crops and plants with selected characteristics. The problem of the advantages and [...]
  • Subjects: Genetics
  • Pages: 2
  • Words: 657

Data Visualization and GIS Solutions

This software ensures the relative autonomy of the geoinformation systems and users of these systems by delivering the possibility of using software products for local and global cluster solutions.
  • Subjects: Geography
  • Pages: 4
  • Words: 1168

The Climate in New York, Miami and Chicago

Although these locations are not enough to embrace the entirety of the varied American climate, they offer unique characteristics of the target settings, such as the proximity to the ocean, the propensity toward rapid changes [...]
  • Subjects: Geography
  • Pages: 5
  • Words: 1460

In-Depth Biological Research

It is essential to note in advance that the 16s rRNA nucleotide sequence of the gene was obtained using the open Nucleotide database owned by the National Centre for Biotechnology Information, which allows finding the [...]
  • Subjects: Biology
  • Pages: 10
  • Words: 2749

The Six Elements of Geography

It is situated in the north of Montreal and south-western Quebec and has a distinct administrative area. In addition, this economic sector has served as a significant source of revenue to the Quebec administration.
  • Subjects: Geography
  • Pages: 3
  • Words: 809

Fatty Liver and Gastrointestinal Tract Disease in Dogs

This research paper analyzes the knowledge surrounding the issue of hepatic steatosis in dogs and reveals a dearth of knowledge pertaining to the disease's impact on dogs' gastrointestinal tract.
  • Subjects: Zoology
  • Pages: 5
  • Words: 1447

Biotechnology, Genetics and Reproduction

On the one hand, this is an opportunity to become parents for infertile couples, on the other hand, the ART industry acts as a new type of business and, therefore, we can talk about the [...]
  • Subjects: Biology
  • Pages: 4
  • Words: 1128

DNA and Evolution – What’s Similar

Transformation, in molecular genetics, is a change in the hereditary properties of cells as a result of the penetration of foreign DNA into them.
  • Subjects: Evolution of Humans
  • Pages: 2
  • Words: 570