Natural Sciences Essay Examples and Topics. Page 5

The report will cover the structure and functions of animal cells and organelles. It will also address the structure and functions of tissues and main organs of the body.

About 70 species of Dugesia are already known, and its phylogeny is identified due to its diagnostic characters but not due to its apomorphies which are usually used in the analysis of other types of [...]

According to Stein, the value of the index describes the stability of the calcium carbonate contained in water. In the event that the value of LSI is at zero, then water is said to be [...]

1 The disadvantage of oat flour is that due to the lack of gluten the dough with it is not as elastic, and as a result the final foods may fall apart.

Animal Cell Number Cell Structure Description and Function 1 Nuclear pore It is a microscopic channel that allows certain materials in and out of the nucleus (Boal & Boal, 2012). 2 Chromatin (DNA) It is made up of DNA and proteins and packages DNA into a smaller volume to fit in the cell. It serves […]

Considering the structure in the figure above, it is evident that a molecule of water has a line of symmetry that can be traced through the water molecule, acting as a bisector of the angle [...]

Here, Chang, Lawless and Yamamoto argue that plasma is the fourth state of matter, which occupies 99% of the universe and consists of particles known as ions, neutrons, and neutrals, which exist in a gaseous [...]

On the other hand, the composition of the electroless nickel coatings depends on the conditions in an electroless plating bath and the formulation of the bath.

The types of cement are based on the amount of tricalcium silicate, dicalcium silicate, and tricalcium aluminate found in the end product.

5 ml solution of Zinc, Copper and lead were added each to one of the three test tubes containing the pieces of zinc.

Circulation is "the movements of body fluids inside the animals from the place of formation to the place of its utilization" in a one-celled animal, cells exchange materials directly with the environment; this implies that [...]

The stink bug is a pest which is commonly known as the Brown Marmorated Stink Bug and is a Hemiptera that infests plants that bear fruits, causing damage on leaves and fruits.

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.

One of the crucial enzymes in the food industry is external invertase from Saccharomyces cerevisiae. The key functional state of the external invertase is a homodymer with a molecular mass of 270 kDa.

During and after the duration of exposure, the observational studies, biochemical analyses, hematological tests, and histological studies that were conducted on the rats show that the biological responses in the rats did not differ significantly [...]

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.

The stomach is an organ of digestion located between the esophagus and the duodenum on the left upper part of the abdominal cavity. The large intestines of the human body are located between the ileocecal [...]

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.

The fact that the fecundity in the cichlid is low and the large size of the eggs indicates that there is a high level of investment by the parents in every offspring.

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 [...]

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".

The difference in the energy of the impinging X-ray and the ejected electrons gives the binding energy of the electron to the atom.

What is the effect of different shampoos on the growth of bacteria on different hair types? 9 Petri dishes Agar gel Cotton buds Three different shampoos Test tubes Droppers Test tube rack Labels

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.

Despite this, weeds are not to be ignored, as 31% of participating growers consider them to be the greatest threat to their crop, compared to 38% for diseases and 4% for insects.

The facial approximation is the process of the construction of the possible facial image of a person using the configuration of the skull.

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.

From all groups of microscopic organisms, representatives of the bacterial and archaean world do not have a nucleus, for this reason, bacteria and archaea are considered prokaryotic cells.

However, according to Bhella, no organisms can be entirely independent of the environment, and life at its core is interdependent. The fact that viruses evolved with other creatures is enough to state that they are [...]

Since the soil in the harsh and arid regions is salty, this makes the vegetation to have a lot of salt elements in them.

In light of this brief background, the discovery of Pompeii as an archaeological site was thus a rediscovery of the ancient town of Pompeii.

The tube cap was removed with the little finger of the dominant hand, and the tube mouth was incinerated in the flame.

The study aimed to produce a phylogeny of the family Testudinidae through the analysis of five molecular sets: three genes in the mitochondrial DNA and two genes in the nuclear DNA.

The pedigree problem is generally featured with the necessity to provide the correct connections among the family members in a genetic history chart.

According to the US Food and Drug Administration, cosmetics include all compounds or products that are applied to the body with the aim of beautifying, boosting attractiveness or improving the physical appearance without generally altering [...]

The climate of the continent was largely uniform, and this ensured that the populations were able to migrate and adapt their crops to different parts of the continent.

By the year 1846, Darwin had a number of publications relating to zoological and geological discoveries of his expedition works that catapulted him in the scientists front rank.

This paper is going to describe the major structures of the brain and the functions of each. This part of the brain is composed of cerebellum and the pons.

It has been identified that the cycle of the moon takes place within the period of twenty-nine days and menstruation in an average woman occurs in the same period."A woman's blood and hormonal cycle follow [...]

As a result of this geographical feature, the region is always variable to floods in most of the seasons especially from the upper area and tidewater from the lower part of the sea.

First Nation People are the indigenous people or the aborigines of Canada and in Columbia, who are settled in the southern part of the country and are separated from other people in enjoying the same [...]

Through the means of his discoveries, Christopher Columbus shattered the myth that the world was flat and that the entire planet was centered on the holy town of Jerusalem.

Although the world he lives in has determined that the only measure of a man is his genetic profile, Vincent discovers another element of man that science and society have forgotten.

Darwin's theory of evolution was largely influenced by the ideas of James Hutton and Charles Lyell. The subfield of linguistic anthropology is often considered a subfield within cultural anthropology, though its relation to biological anthropology [...]

The increase in the prices of oil in 2005 raised the production and use of sugarcane ethanol in vehicles. The fermentation process used to make ethafuel is exactly the same as the one used in [...]

This explains why the people to be sacrificed had to be painted blue- in relation to the association of the color to Chaac In the Mayan community the sun, the moon as well as the [...]

It is these issues that South Africa needs to deal with to increase the standard of living of all people in South Africa.

The caretakers of the archaeological records should harness their profession for the gain of all populace; this in practice occurs when they investigate and construe the records. The next ethical issue in this order is [...]

McKibben speaks of Somatic Gene Therapy as it is used to modify the gene and cell structure of human beings so that the cells are able to produce certain chemicals that would help the body [...]

Considering the fact the Chasmosaurus had a herbivorous diet, it is understandable that it fed on most of the plants found during the Cretaceous age.

The high mountainous Alps in the west of Austria surrounds somewhat into low lying lands and valleys in the east of the country.

The DNA is similar in every cell of the body, but depending on the specific cell type, some genes may be turned on or off - that's why a liver cell is different from a [...]

Ashforth, an Australian anthropologist lived in the town for many years, and the story is about his friend Madumo who is accused by a prophet of his family of his families church of using witchcraft [...]

The goal of this experiment was to illustrate various parameters of radioactivity, including the plateau of a Geiger-Muller counter, finding the resolving time of a Geiger tube, verifying the inverse square law, measuring the penetrating [...]

However, the described assumption is quite far from the truth, with a significant number of bacteria being not only useful but also essential to the functioning of the human body and the sustenance of life.

The research specialty is not dictated by the characteristics of the region. Florida is surrounded by the Gulf of Mexico to the west and the Atlantic Ocean to the east.

Green chemistry can be described as the abolition of the use or production of harmful substances in the creation, making, and use of chemical commodities.

The first objective of the experiment was to demonstrate how pinacol undergoes rearrangement to form pinacolone under the catalysis of heat, acid, and boiling chips.

In this experiment, it was hypothesized that the rate of photosynthesis rises with an increase in the concentration of carbon dioxide and went on to test the hypothesis.

Due to this skewed focus, the general migration theories fail to offer critical insights into the real picture of migration impacts on the development in the countries that send the migrants.

Manish is a pseudonym, as it is a common Indian name, and it is associated with individuals of Indian identity. As for the Indian identity, it has to be mentioned that music is the essentiality [...]

The recording of the things by the frequency they were thrown away during the week allowed concluding that the waste of food products took the first place in the list.

The structure of the region was subject to the tribes who lived there. The camels provided the Bedouin with solutions to most of their needs in the desert.

5% for services from 2000 to 2005; in addition, the earning from exports increased dramatically and it was reported for 45% of economic output;

Moreover, I believe that in this way I can help people by making discoveries that can be used in medicine, agriculture, food production. This experience can help me in the future especially when I will [...]

Geography can be defined as the science that studies the distribution of human and physical features over the Earth and explains the relations between them.

This work is aimed at determining the significance of agriculture in African countries, the main features of the regulation of this field, as well as the causes leading to a failure in a traditional developmental [...]

DNA was obtained from blood, muscle tissue and feathers of the bird. The last step was to visualize the DNA extract through gel electrophoresis and making conclusions of the bird's sex.

This paper aims to outline the key factors affecting the formation and maintenance of polar ice caps, as well as to review and compare the characteristics of Antarctica and the Arctic.

However, in reality, the distance from the Earth to the Sun does not change because the orbit is almost a perfect circle with the smallest difference of two percent between the closest and the farthest [...]

Initially, anthropology was considered as the science that studies the origin and evolution of the human physical organization and different races excluding the social and cultural characteristics.

Millan earned the nickname "the dog boy" because of his natural ability to interact with dogs. Consequently, the dog behaviorist became a celebrity in different parts of the country.

The Arabs and most of the population living in the Middle Eastern region of the world are perceived to be people who are hardened due to their environment. In addition to that, the environment determines [...]

Soil is the sediment, surface layer of land produced as a result of transformations in rock materials that occurred under the influence of both living and dead organisms including plants, animals, and bacteria; solar heat, [...]

The San people live in a country called Namibia, which is located at the west coast of the southern part of Africa. As discussed earlier, one of the good virtues they have is that they [...]

However, at the moment the rapid evolution of science and increased level of attention given to the investigation of animals introduced another idea which states that other species might also have the ability to think [...]

Although there are many theories which explain the origin of the earth, Darwin's theory evokes strong responses due to the fact that it opposes religion and it does not meet all the requirements of a [...]

In the context of this essay, nature signifies the effect of genes in the DNA structure that are transferable from a parent to the offspring.

In the autumn season, the animals become healthy, and this is the time when nomads sell their animals and buy supplies for themselves, which they have to keep for another season of the year.

The employees have a deep sense of running their systems in an orderly manner and it is not common for the Japanese to move between jobs as is the case in the US and Europe.

As it often happens with various works of art that have stood the time test of several epochs, the creator of the harp and the invalid soundbox inside it is unknown.

These coupled with the rapidly rising population against the rapidly reducing levels of the natural environment, pizza and other fast food products continue to gain ground in the current markets.

These important steps are the selection of the fibers which can be used for the production of the wet mopping cloths; the process of laying the chosen type of fibers to make a definite type [...]

The preparation of the journals involved conducting interviews with the urban farmers and surveys on the certainty of the farming practices.

The conclusion is therefore valid and is drawn from a scientific point of view, especially the role of the shell to the spider's survival in its habitat.

The three distinct mountains in the region are the Jura Mountains in the northwest, central plateau, and the Alps in the south.

Genetic diversity is a term used to refer to the dissimilitude of organisms of the same species. Species diversity is used to refer to dissimilitude of organisms in a given region.

Irrigation refers to the artificial use of water to assist in agriculture and is important in the suppression of weeds especially in grain fields and in the deterrence of soil hardening.

This might offer a scientific explanation as to why she is an athlete due to the functions of the hormone in the body.

Given the significance of the agricultural sector to the economy, the government introduced the 11th five-year plan to provide support and incentives to farmers and other stakeholders in order to enhance production of food.

Indeed, one of the fundamental tasks of anthropology is understanding different cultures, which "inevitably involves either the translation of words, ideas, and meanings from one culture to another, or the translation to a set of [...]

According to Keith, the film of water flowing in the roots of the plant should be made as shallow as possible to facilitate efficient flow of oxygen within the rooting system of the crops as [...]

However, the stellar beauty of the landscape is not the only notable feature of the Prince George climate. The fact that the natural physics of the Prince George city is defined by unusually high humidity [...]

It was also a normal practice to adopt children and look after them as part of the family2 Janet discovered that the people of Langkawi lived like a family on the island.

Because of the changing climate, and the region landscape, most farmers use irrigation schemes to support their practices of subsistence farming.

The big population made the site one of the largest cities of the world during the 1st millennium of the AD era.

To understand the peculiarities of the thermoregulation system of the both types of animals, it is necessary to focus on the definitions of endothermic and exothermic animals.

This situation of cell line cross contamination could be attributed to constant necessity in the protocol for cell culture viability and identification.

This is usually possible as women and men have different sexual organs and the disparity in the sexual organs of men and women explains the differences in both sexes.

The park has an animal orphanage where young animals left behind by their parents are kept: life at the park is survival for the fittest and if, for instance, a zebra is ambushed by a [...]

The other related publication and electronic media by the same publisher include the National Geographic Kids, National Geographic Adventure and the National Expedition.

Everest and its summit became known to the western world in the beginning of the twentieth century. Thus, Hall and Fischer overestimated their abilities and this led to the tragedy.

The report suggests that most of the population is located in the Emirates of Dubai and Abu Dhabi. The IMF ranked the UAE as the nation with second highest GDP within the Cooperation Council for [...]

Lane's interest in understanding the people of Egypt was demonstrated in his detailed work on this country and the ancient society that existed when this dynasty ruled the region.

One of the observable characteristics of these concepts is the existence of human beings in the interpretations of landscapes and the need to understand their role in the creation of the status of features forming [...]

Analysis of amphetamine and methamphetamine is carried out in a series of steps that entails employment of numerous tests for conclusive identification of this group of stimulants.

However, media has contributed to the perception of insects as 'other' food in the west. This has contributed to the acceptance of insects as beautiful creatures.

This significant figure illustrates the extent of the injustice that the state is repeatedly committing against its people from the time of the policy's enactment.

This anthropological viewpoint is the basis of the claim that when individuals are born into a certain culture they tend to pick up the behaviors that are dictated by that culture.

Farmers have adopted the use of both the herbicide and the herbicide resistant crop in large percentages. One of the largest varieties is pigweed which grows at a rapid rate and leads to the emergence [...]

According to Fazal, "geographic data" can be defined as the data that is "pertinent to features and resources of the Earth", whereas "geographic information" is traditionally viewed as the geographic data that has been organized [...]

The baby has a biological need to learn and absorb information from the outside world; it has a cognitive and a sensory need that requires nurturing at this stage of life ensuring that the rest [...]

Moreover, the research will expound the implication of animal hoarding, with an aim of understating some of the negative effects of the practice to animals and to the community.

Unfortunately, what should be taken into consideration is the fact that as human interference continues to escalate within the region such as overfishing, oil drilling, population expansion and the effects of global warming this has [...]

Considering Margaret Mead's ethnography, Coming of Age in Samoa, it is possible to say that dwelling upon that society she paid much attention to religion, education, upbringing and relation to each other within a family, [...]

The authors suggest that it needs more accurate measurement of sleep and wake pattern by the use of the electrooculogram, the recording of the movement of the eye, EEG and electromyogram, the recording of the [...]

Trinkel and Kastberger argue that, the foremost threat that is facing lions in the jungle is the intrusion of more carnivores because they can overwhelm lions and force them to migrate to other destinations.

Dose response The impacts of the mosquito hazard have called for a measure to use a pesticide to control the breeding and the ultimate population of the mosquitoes in the city.

The effects of globalization and the need for the country to take a more active role has seen the country explore the possibility of relaxing it s strict laws that govern its international relations.

Spain, claiming over half a million acres on the Iberian Peninsula, fronts on the North Atlantic, the Bay of Biscay, the Mediterranean Sea, and the Balearic Sea.