Natural Sciences Essay Examples and Topics. Page 12

2,348 samples

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

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

Unknown Bacteria Under Microbiology Lab Tests

The mixture of water and medium was then poured into the petri dish and swirled to completely cover the surface. The colour of the colony was then observed.
  • Subjects: Biology
  • Pages: 4
  • Words: 1164

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

Analysis of the Brine Shrimp

The Brine shrimp, which is also known as the Sea monkey, has been used in the modern world as food for fish and is of high quality because it can be grown using the aquaculture [...]
  • Subjects: Biology
  • Pages: 3
  • Words: 811

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

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

Inhibiting Grass Growth by Salt

The practice results in an increase in concentration of salt in the soil and/or accumulation of salt on the foliage. Road salt inhibits the growth of grass.
  • Subjects: Biology
  • Pages: 2
  • Words: 591

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

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

Flash Chromatography Overview and Analysis

Pour the elution solvent to the silica gel then, using a gas pump, force the solvent through the silica. Without disturbing silica's top surface, the dissolved sample in the elution solvent is then gently applied [...]
  • Subjects: Chemistry
  • Pages: 2
  • Words: 607

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

Lipids: Fatty Acids and Glycerols

The membrane, made up of lipids, facilitates the fluid movement and transportation of the vital elements of the cell. A lack of these vitamins in the body leads to various diseases and conditions.
  • Subjects: Biology
  • Pages: 3
  • Words: 916

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

Cell Theory, Functions, Discoveries

The basic premises of cell theory include that the basic unit of structure in all living organisms is the cell. The other premise in cell theory is that the functionality of an organism is a [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 742

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

The Genus Rosa’s Adaptation to the Environment

Alternative hypothesis: The abundance and distribution of stomata, storage, transport, and floral structures have a substantial influence on the adaptation of the genus Rosa to its environment.
  • Subjects: Biology
  • Pages: 4
  • Words: 1144

Lancelets’ Adaptation and Environment

The first describable organism in the evolutionary phylogeny of lancelets is the 'Branchiostoma Lanceolatum', a molluscan slug of the Limax species.
  • Subjects: Zoology
  • Pages: 2
  • Words: 572

The Photosynthetic Rate in Terrestrial Plants

In this regard, one is expected to establish the necessities of photosynthesis and discover the requirement of carbon dioxide and light for oxygen evolution.
  • Subjects: Biology
  • Pages: 4
  • Words: 1232

Nucleophilic Substitution Reactions of Alcohols

The objective of the experiment is to demonstrate how substitution reactions of alcohol occur. Specifically, the experiment aims to demonstrate the formation of 1-bromobutane from 1-butanol through a nucleophilic substitution reaction.
  • Subjects: Chemistry
  • Pages: 8
  • Words: 2137

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

Genetic Engineering Using a Pglo Plasmid

The objective of this experiment is to understand the process and importance of the genetic transformation of bacteria in real time with the aid of extrachromosomal DNA, alternatively referred to as plasmids.
  • Subjects: Genetics
  • Pages: 4
  • Words: 1207

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

Herbicide Resistant Weeds: Causes and Prevention

Herbicides are used by farmers to control the population of specific weeds in their farms, but genetic mutations in the part of some weed species can lead to their development of resistance against the herbicides.
  • Subjects: Agriculture
  • Pages: 2
  • Words: 568

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

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

Atlantic Tomcod’s Adaptation Experiment

Conversely, those with the gene survived and passed it on to their young, making them immune to the toxins in the water and ultimately creating a generation of PCB resistant tomcod.
  • Subjects: Zoology
  • Pages: 5
  • Words: 1385

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 Analysis of Siamangs’ Behavior in a Zoo Setting

The results of the research disprove the hypothesis as it was assumed that siamangs would be less active in the zoo due to visitor's attention and limited territory. Therefore, it is possible to note that [...]
  • Subjects: Zoology
  • Pages: 5
  • Words: 1385

Analyzing the Economy of Cuba

The government controlled most of the means of production and employed a large percentage of the workforce. In the current paper, the author takes an in-depth look into the current status of the Cuban economy.
  • Subjects: Countries Studies
  • Pages: 4
  • Words: 1214

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

Maple Syrup Urine Disease Pathogenesis

This results in the accumulation of the branched-chain amino acids within the body and the brain. The case study was done to determine the type of mutation that occurs in the genes of the patients, [...]
  • Subjects: Genetics
  • Pages: 8
  • Words: 2172

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

Cell Energy Metabolism Controls

By definition, photosynthesis is a process whereby light energy is converted to chemical energy in the presence of CO2 and water.
  • Subjects: Biology
  • Pages: 2
  • Words: 671

Recent Advances in Artificial Photosynthesis

Specifically, scientists strive to use the known and change them into "functional, efficient, synthetic systems that will tap the endless supply of energy coming from the sun".[1] Researchers believe that artificial photosynthesis can work on [...]
  • Subjects: Biology
  • Pages: 5
  • Words: 1392

Ethical Issues Behind Feeding People With GMOs

Genetic engineering is the amendment of the genetic composition of a particular organism or simply the adjustment of an organism's transmissible matter in a bid to produce desirable characteristics.
  • Subjects: Genetics
  • Pages: 10
  • Words: 2814

The Science Behind Bacterial Aging

A bacterium is one of the organisms that undergo asymmetric division of cells hence does not undergo aging. In this bacterium, it is evident that the DNA process stopped because the stalk cell turned out [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 592

Understanding Emerging Diseases

Some of the diseases are spread when the agents are passed on from animals to humans through a process referred to as zoonosis.
  • Subjects: Biology
  • Pages: 2
  • Words: 559

Overview of Polyether Ether Ketone

The exceptional properties of polymers are determined by the extent and the organization of the molecular chain. According to Kurtz, the melting temperature is an indicator of the thickness and flawlessness of crystals.
  • Subjects: Chemistry
  • Pages: 6
  • Words: 1681

Gene Expression Using Quantitative Real Time PCR

The establishment of the exact products of the expression of certain genes calls for specialized molecular analytical procedures. This experiment had an objective to determine the gene expression levels of the genes encoding CHOP/GADD153, BiP [...]
  • Subjects: Genetics
  • Pages: 4
  • Words: 1104

Bacterial Diseases of Marine Organisms

The striped dolphin is a highly susceptible host of the bacteria and poses and the most potent reservoir and source of transmission of the infectious agent.
  • Subjects: Biology
  • Pages: 4
  • Words: 1211

Researching of the Nafion Resin

Prior to this process, a preliminary process was done where the NR/S-X samples were subjected to a 24-hour drying process inside an oven and at a temperature of 95oC.
  • Subjects: Chemistry
  • Pages: 4
  • Words: 1116

XPD Mutation: Healthcare Issues

A mutation in the XPD helicase hampers the ability of the TFIIH complex to execute its functions because of the increase in the rigidity of the protein.
  • Subjects: Genetics
  • Pages: 2
  • Words: 553

The Gene Therapy: Crucial Aspects

In the other common form of gene therapy, the modified gene cells are only corrected in the patient and the next generation does not get to inherit them.
  • Subjects: Genetics
  • Pages: 4
  • Words: 1173

Hydrogen – The Lonely One

My name is Hydrogen, and my name is usually denoted by the letter 'H.' I am the first born in a family of seven and our family name is Group 1. Due to my weight [...]
  • Subjects: Chemistry
  • Pages: 3
  • Words: 892

The Production of Aluminum

In addition to the MHD forces, the other force that acts on the bubbles is in the form of buoyancy and it originates from an anode.
  • Subjects: Chemistry
  • Pages: 4
  • Words: 1101

Self-Healing Materials and Their Using

The healing process of this material is almost similar to that of the aforementioned self-healing concrete except for the fact that the polymer uses the Grubbs' catalyst during the healing process while the self-healing concrete [...]
  • Subjects: Biology
  • Pages: 4
  • Words: 1111

Genetic Male Pattern Baldness

Vertex hair loss: Vertex hair loss can be observed on the top of the head which is crown area and does not touch the hairline of the forehead.
  • Subjects: Genetics
  • Pages: 10
  • Words: 2770

Bitter Taste Receptors Critical Review: A Focus on Tas2r38

The researchers are fascinated by the ability of this compound to be detected by the taste buds of certain individuals and remain undetectable by others. 1To this end, the compound is of profound interest in [...]
  • Subjects: Biology
  • Pages: 4
  • Words: 1096

Rapid Flow Cytometer Test Importance

Second, the protocol was modified by raising the temperature required for labeling the bacterial cells."The third modification was the addition of 0 8% ethylenediaminetetraacetic acid to the A31 buffer used in the pretreatment of milk [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 554