Natural Sciences Essay Examples and Topics. Page 11

2,235 samples

Electrochemical Methods of Analysis

The choice of method is determined by the chemical compound to be analyzed, the time available, the level of accuracy needed and the available time.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 632

A Brain Anatomy and the Sexual Orientation

Second, the paper by Byne et al.not only studied the volume of the various interstitial nuclei of the human anterior hypothalamus, but also focused on investigating if the cell number in the various nuclei has [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 617

Impact of Electromagnetic Fields on Circulation System

In order to see if people are really at risk of having health issues because of ELF MF, the researchers paid attention to the changes in the sample's heart rate, arterial pressure, and skin blood [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 281

Measuring the Salt Tolerance of Plants

The variety of crops grown and the need for agricultural measures for soil moisture and irrigation depend on the arable land belonging to a particular category.
  • Subjects: Biology
  • Pages: 8
  • Words: 2504

How Glacier Mass and Mass Balance Are Linked

The entire process requires such inputs as rain, snow, and hail to help promote the accumulation and output, such as erosion, percolation, and melting of the ice to assist in the reduction of the ice.
  • Subjects: Geography
  • Pages: 1
  • Words: 338

Literacy and Numeracy in the Geography Subject Area

In the given sample, the student, Pat, demonstrates the basic understanding of the topic, and her skills seem to be poor. The presented sequence of lessons is designed to improve students' numeracy and literacy skills [...]
  • Subjects: Geography
  • Pages: 7
  • Words: 1996

Perception of Spoken and Written Language

The cochlea is a spiral fluid filled structure and it propagates the vibrations from the fluid to the nerve impulses that direct them to the brain via the auditory nerve which is a collection of [...]
  • Subjects: Biology
  • Pages: 4
  • Words: 1243

What Enzymes Are and How Do They Work

Enzymes should be in a proper shape to function well and resemble the way a key in the lock functions and they way it is affected by the nature.
  • Subjects: Biology
  • Pages: 3
  • Words: 871

Climate Change and Threat to Animals

In the coming years, the increase in the global temperatures will make many living populations less able to adapt to the emergent conditions or to migrate to other regions that are suitable for their survival.
  • Subjects: Biology
  • Pages: 2
  • Words: 573

“Molecular Insights Into Classic Examples of Evolution”

Current research, as discussed by the symposium speakers explicitly cited in this article, reveals that genetics plays a fundamental role in evolution science and it is indeed the mutation of genes that actually allows organisms [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 568

The Chemical Composition of Food

Secondly, the liver makes most of the cholesterol in the body which is still not important and the body takes only about 50% of the cholesterol in the food eaten and the rest is eliminated [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 599

“Design and Evaluation of Fragment-Like Estrogen Receptor”

The report entails a summary of the experimental design and synthesis of the THIQ derivatives, the biochemical evaluation of the THIQ fragments, and the structural evaluation of the THIQ fragments as described in the article.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 772

Determination of M2+ Ions in Mineral Water

Titrometry is one of the techniques that chemical analysts use to determine the concentration of metal ions in mineral water. A buffer is necessary to provide suitable pH for the complexing of EDTA with metal.
  • Subjects: Chemistry
  • Pages: 3
  • Words: 1022

Brain Injury While Football Playing

The main reason for conducting this research is to understand the dependency of the head injuries got in childhood after the development and changes in the human brain in adulthood.
  • Subjects: Biology
  • Pages: 3
  • Words: 882

Communication Behavior Among Crows

The following paper is an analysis of the communication behavior among crows and similarities between this type of communication and human communication.
  • Subjects: Zoology
  • Pages: 6
  • Words: 1708

Biodiversity and Food Production

This paper will analyze the importance of biodiversity in food production and the implications for human existence. Edible organisms are few as compared to the total number of organisms in the ecosystem.
  • Subjects: Agriculture
  • Pages: 7
  • Words: 1995

Non-Homologous-End Joining, and Homologous Recombinational Repair

These included the role of DNA polymerase beta during long patch base excision repair in mammals, the exonuclease activity of Artemis on DNA-PK-dependent processing of DNA ends in NHEJ-catalyzed DSB repair, and disorders that arose [...]
  • Subjects: Genetics
  • Pages: 14
  • Words: 3841

Dolphins Sleeping Pattern

Lymin et al.note that dolphins' sleep is associated with a unihemispheric pattern that helps them to keep swimming even when they are asleep.
  • Subjects: Zoology
  • Pages: 2
  • Words: 563

The Chemical Communication System

The appropriate elaboration of this communication is through the study of Biological Engineering, which is an application of different concepts and methods of biology to get solutions to life sciences.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 544

Sugar Results: Experiment on Chocolate

When the concentration of glucose was high, the color and odor of the reaction mixture were darker and more intense, respectively, due to a larger amount of products formed.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 434

The Case of Human Cloning at Kyunghee University

The objective of the KUMC in the research was to conduct in vitro fertilization of the ova but the researchers went ahead and performed human cloning using some of the ova that they had obtained [...]
  • Subjects: Genetics
  • Pages: 8
  • Words: 2221

Allometric Scaling of Maximal Metabolic Rate in Mammals

All through their investigations and findings, the researchers attempt to uncover the paper's hypothesis that stated, "To determine the factors that influence MMR in mammals". To select the best data, the researchers employed the standardized [...]
  • Subjects: Biology
  • Pages: 4
  • Words: 1095

The Size Variation and Zonation

Gastropods constitute one of the major groups of the molluscs that also comprise the Bembicium nanum in the top shell category. The objective of this study is to evaluate the size variation and Zonation in [...]
  • Subjects: Biology
  • Pages: 3
  • Words: 923

Tasmanian Devil’s Facial Tumor Disease

The disease was first discovered in the early 1990s, when some researchers noticed that the faces of the devils had defects and were disfigured in the Northern part of Tasmania.
  • Subjects: Zoology
  • Pages: 3
  • Words: 860

Cell Counting and Measurement Under Magnification

The aim of this exercise is in the measurement and recording of the size of cells and tissues. Insert the eyepiece graticule into the eyepiece and then reattach the base of the eyepiece to the [...]
  • Subjects: Biology
  • Pages: 5
  • Words: 1641

Vision, Its Structure and Function in Humans

Light enters the eye through the cornea and passes through the iris to the retina where it is focused. Photoreceptor cells are linked to the optic nerve fibers and make the image more visual.
  • Subjects: Biology
  • Pages: 2
  • Words: 179

Greenhouse Gases Produced by Grasslands

This discovery shows that the emission of Methane not only depends on the species of the plant, but also the condition in where they are growing.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 595

Methoxyprazin in Aroma of Wine (Sauvignon)

The occurrence of isobutylmethoxypyrazine-like aroma in the making of wine is regularly associated with the grape variety, which proves that the methoxypyrazines are produced under genetic control in the grape berry.
  • Subjects: Chemistry
  • Pages: 4
  • Words: 1163

Senses and the Endocrine System

The individual functions of the individual organs of the body ensure that the body is at some equilibrium; all needs of the body are met.
  • Subjects: Biology
  • Pages: 3
  • Words: 828

Chemistry: Cooking Temperatures

Specific temperatures, therefore, are needed to be observed during the preparation of specific foodstuffs and, of course, for specific durations. The range of temperatures between 41 F to 135 F also known as the danger [...]
  • Subjects: Chemistry
  • Pages: 3
  • Words: 866

Co-Evolution: Angiosperms and Pollinating Animals

The birds need nectar from the flowers, the plants that produce nectar consequently only do so to attract these birds and insects, for the process of drawing nectar from these plants to be possible, the [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 601

Humoral Medicine in Latin America

It was founded by the Roman and Greek physicians who said that if the human body experienced a deficiency of the four major body fluids, the health and temperament of a person would deteriorate. The [...]
  • Subjects: Anthropology
  • Pages: 2
  • Words: 581

Carbon Monoxide (CO) Poisoning

Carbon monoxide poisoning is a situation where the inhaled amount exceeds the acceptable levels and cause undesired effects to one's body. This is one of the main laboratory evidence of carbon monoxide poisoning which was [...]
  • Subjects: Biology
  • Pages: 4
  • Words: 1169

Conduction Phenomena in LI-Ion Batteries

Other challenges the researchers face are the constantly changing conduction properties of the anode and the difficulty in measuring the conductivity and microstructure of the solid-electrolyte film.
  • Subjects: Chemistry
  • Pages: 6
  • Words: 1669

Inherited Mutant Gene Leading to Pompes Disease

The main challenge in treating the disease lies in the manner in which it rapidly progresses and the high rates of mortality associated with it. The insufficiency of GAA results in accumulation of glycogen in [...]
  • Subjects: Genetics
  • Pages: 9
  • Words: 2564

The Rhizoremediation for Plant

The structure of the DNA dictates the external features the plant express which have widely been used to determine the kind of a plant environment in which they fit.
  • Subjects: Biology
  • Pages: 6
  • Words: 1903

Acute Acrylonitrile Toxicity

The metabolism of acrylonitrile is via multiple pathways but the main one involves the pairing of acrylonitrile with glutathione-S-transferase as a catalyst.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 556

Epigenetics of High Fructose Corn Syrup at a Molecular Level

Increasing or decreasing the amount of glucose concentration level in the blood, directly affects the concentration of fructose in blood, since they all act as determinants of the overall blood concentration In this case, high [...]
  • Subjects: Genetics
  • Pages: 2
  • Words: 755

Botany: The Beavertail Cactus

Phylum Angiospermae is known to dominate the land because it consists of the highest number of species in the kingdom Plantae. Beavertail cactus exhibits several structural modifications in the leaves, stems, roots and flowers.
  • Subjects: Biology
  • Pages: 2
  • Words: 568

Comparison Mercury Testing in Fish Tissue Samples

For validity and reliability of the results, sample blanks are analyzed alongside the samples to ensure that no contamination is carried over to the next sample and also to check the accuracy of the analytical [...]
  • Subjects: Chemistry
  • Pages: 2
  • Words: 623

Organ Systems: Functions and Malfunctions

Growth hormone, produced from the anterior side of the pituitary gland, is one example of the hormones that regulate essential processes in the body.
  • Subjects: Biology
  • Pages: 3
  • Words: 827

Benadryl: Structure, Properties, Interesting Facts

The organic compound has the following structure: The compound is highly soluble in water and alcohol because it is a polar organic compound and has a molecular weight of 291.82.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 671

Brine Shrimp Habitat

Not only in the natural water bodies can brine shrimps survive but also in artificial places as long as the water that they are in is salty.
  • Subjects: Biology
  • Pages: 2
  • Words: 534

Preparation and Properties of an Aqueous Ferrofluid

A ferrofluid is a liquid that contains very small pieces of a magnetic substance and hence acquires its magnetic properties when placed in a magnetic field. A ferrofluid primarily consists of small particles which are [...]
  • Subjects: Chemistry
  • Pages: 5
  • Words: 1385

Kiwi Fruit: Nutrition and Biological Molecule

The kiwi fruit is botanically referred to as Actinidia deliciosa and the common name used is Chinese gooseberry. The primary function of starch is derivation of energy.
  • Subjects: Biology
  • Pages: 2
  • Words: 594

Counterarguments to Human Cloning

One of the most controversial is the attempt to reproduce an exact replica of a human being through the process of cloning.
  • Subjects: Evolution of Humans
  • Pages: 3
  • Words: 851

Energy Intake and Expenditure Analysis

Determination of relationship between energy intake and energy expenditure is therefore important aspect towards determination of maximal energy expenditure, optimization of fat expenditure as secondary source of energy after carbohydrates and capacity to achieve energy [...]
  • Subjects: Chemistry
  • Pages: 4
  • Words: 1366

Consideration of the Reproductive Systems

In fact, reproduction in living things is classified as asexual or sexual depending on the nature of the reproduction. Cell division is essentially the process that occur in the cell, which lead to division or [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 570

Evidence for Biological Evolution

The interconnection between life and evolution remained a mystery until the radiance named Charles Darwin illuminated the scientific world with a novel piece of work titled "On the Origin of the Species using Natural Selection [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 563

Modern East Asians and Denisovans Share Genetic Material

The researchers did not explain the specific mode of delivery of the genetic material through hybridization thus it must be assumed that the Denisovans in Siberia were able to travel to Southeast Asia and intermarry [...]
  • Subjects: Anthropology
  • Pages: 6
  • Words: 1671

Uranium Mining and Issues Tied to It

Because the effects of radiation can be far reaching on the health of the workers and the people living in close proximity to areas where uranium is mined authorities should ensure that they provide information [...]
  • Subjects: Chemistry
  • Pages: 6
  • Words: 1863

Evolution: Debunking Darwin’s and Lincoln’s Contributions

Although this statement is intended to demonstrate how life has generally evolved owing to the immense contributions of Darwin in the sciences and Lincoln in politics and democracy, it lacks merit as there were other [...]
  • Subjects: Evolution of Humans
  • Pages: 4
  • Words: 1190

What Is Mitochondria and What Functions Does It Have

The ratio of the proteins found in the mitochondria is the same as that found in the eukaryotic cell. The space between the inner and outer membrane has the same amount of ions and sugars [...]
  • Subjects: Biology
  • Pages: 4
  • Words: 1095

Indirect Definition of the Unit of a Penny Weight

The beaker containing all the available pennies and, also the beaker plus half the number of pennies were to be separately weighed and recorded initially before the commencement of the experiment.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 688

The Gay Gene: Understanding Human Sexuality

If this gene existed and it was similar to a gay gene, it would explain the difference in gay people. If this happened, there would be a great change in the way gay people are [...]
  • Subjects: Genetics
  • Pages: 4
  • Words: 1219

Evolutionary Theory: Misconceptions Analysis

This is why scientists argue that when it comes to evolution, it is both a fact and a theory. It is a random mass of code that may be serving a certain purpose in the [...]
  • Subjects: Evolution of Humans
  • Pages: 3
  • Words: 824

Coffee in the Development of High Blood Sugar

These high levels of glucose in the blood may even lead to the death of the victim. The net effect of this condition is high glucose levels in the blood plasma of the victim.
  • Subjects: Biology
  • Pages: 4
  • Words: 1126

Aspects About Zebrafish – Eco, Physio, and Behavior

The development of the embryo of a zebrafish begins immediately after the hatching of the egg and if the eggs are not fertilized, the development of the embryo stops after a few cell divisions.
  • Subjects: Biology
  • Pages: 5
  • Words: 1400

Viral Inhibitor of Human Caspases

This is especially so given the fact that throughout the development of this nematode, the number of cells in the organs is highly controlled and almost all mature C.elegans contain the same number of cells [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 879

Toxicology: Is Water a Toxic Substance?

It is well known that the solubility of ethanol in water is unlimited. Toxicity could be a characteristic of the formation of the reactive oxygen species which can also be present in water.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 550

Desalination: Biofouling of Seawater Reverse Osmosis

Membrane fouling occurs as a result of the accretion of substances on/in/or near the membrane. More so, during desalination, the process is carried out in a way similar to the treatment of drinking water.
  • Subjects: Chemistry
  • Pages: 3
  • Words: 821

Richard Preston’s Idea of Nature

In addition, he has authored a number of books such as 'First Light', 'American Steel', 'The Cobra Event', 'The Hot Zone', 'Wild Trees' and 'The Demon in the Freezer'.'The Hot Zone' was published in 2002 [...]
  • Subjects: Biology
  • Pages: 6
  • Words: 1774

Psychiatric Genetics. Epigenetics and Disease Pathology

The switching on and off of the imprinted genes is the same regardless of the parental origin. The genome-wide DNA analysis revealed that there was a difference in DNA methylation of the glucocorticoid receptor gene [...]
  • Subjects: Genetics
  • Pages: 5
  • Words: 1503

Substitution Reactions of Alcohols

1 The SN2 substitution reaction occurs when the attacking atom or group is a strong nucleophile that hits the electrophile from the rear end thereby ousting the leaving group.
  • Subjects: Chemistry
  • Pages: 10
  • Words: 2743

City Centre Decline, Revitalisation in Riyadh

This paper provides a review of literature in reference to the issues of city centre decline, revitalisation, and people's perceptions focusing on the city centre of Riyadh.
  • Subjects: Countries Studies
  • Pages: 6
  • Words: 1666

Microbiologic Exposure

The transmission of disease requires the interaction of the environment, an agent, and the host of the disease. The following essay highlights some of the infections that may be acquired from an individual coughing in [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 564

“What’s the Fuss about Stem Cells?”

The primary goal of this essay is to emphasize the importance of the research of the stem cells, provide a precise definition, and explain their functions in the body.
  • Subjects: Biology
  • Pages: 2
  • Words: 581

GEP (Gene Expression Profiling) on MM Prognostication

GEP is traditionally performed in thirty-nine steps, which include the identification of the experimental design, the collection of genes, identification of samples, array preparation, provision of a targeted synthesis, hybridization, transformation of the key data, [...]
  • Subjects: Genetics
  • Pages: 2
  • Words: 595

Principles of Nervous System in Animals

The procession and interpretation of the sensory organs is then effected by the nervous system to facilitate an understanding and interpretation of the surrounding. Cephalization consists of the actual concentration and accumulation of the functions [...]
  • Subjects: Biology
  • Pages: 3
  • Words: 873

The Effects of a High Consumption of Water

The null hypothesis would be that increasing the daily intake of water to eight glasses a day has a positive effect on the body, especially on the skin.
  • Subjects: Biology
  • Pages: 5
  • Words: 1373

Fungi and Plants’ Role in Survival of Other Organisms

First, the relationship between plants and fungi shows that plants depend more on fungi than fungi depend on them. Considering that more than 90% of all plant species on earth cannot live without minerals and [...]
  • Subjects: Biology
  • Pages: 4
  • Words: 991

Origin and Evolution of Segmentation

In the article, "Origin and Evolution of Segmentation", the first hypothesis supports the independent segmentation in annelids, arthropods, and chordates. The first hypothesis predicts negligible similarities in the segmentation patterns of arthropods, chordates, and annelids.
  • Subjects: Biology
  • Pages: 2
  • Words: 562

Genetic Diseases: Sickle Cell Anemia

This genetic disorder research paper aims to elucidate the underlying molecular causes of SCA as well as its symptoms, inheritance, treatment, diagnosis, and prevalence in certain populations.
  • Subjects: Genetics
  • Pages: 9
  • Words: 2499

Polarization in Electric Charges and Magnets

For instance, there is a misconception that "a magnetic field exerts a force on both the steady and the moving objects", this is not always the case.
  • Subjects: Chemistry
  • Pages: 4
  • Words: 1107

The Characteristics and Importance of Chickpeas

This demonstrates the popularity of chickpea and its application in various areas of the economy. The popularity of chickpea has grown significantly, and this has led to its demand in different parts of the world.
  • Subjects: Biology
  • Pages: 13
  • Words: 3665

Baking From the Point of View of Chemistry

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.
  • Subjects: Chemistry
  • Pages: 3
  • Words: 898

Vitamin B6: Biochemical Overview

In order to maintain the proper percentage of Vitamin B6 in the patient's body, it is imperative that the dietary allowances of the vitamin should be in direct proportion to the patient's age; more to [...]
  • Subjects: Chemistry
  • Pages: 3
  • Words: 861

Theories of Panspermia and the Origin of Life on Earth

Panspermia is one of the theories of the origins and creation of life on our planet, according to which life forms appeared on Earth from the outside of the Universe and are transferred through asteroids, [...]
  • Subjects: Evolution of Humans
  • Pages: 2
  • Words: 573