Essays on Molecule

Status of the document.

This document is a project proposal for the development of starch-based hemostatic products. Acknowledgement. Much thanks to the project supervisor who offered guidance in every step of the development of this proposal. Developing starch based hemostatic products Project summary. Purpose: This proposal is envisioned to develop a hemostatic agent from purified plant starch. In this case, the product of the reaction should be developed by the formation of microporous hemosphere particles after etherification, esterification and crosslinking of glucose molecules to form ethyl propanetriol (glycerol-ether links (1-3 deoxy propanol)). The second intention of this study is to investigate the properties ...

Introduction

Sickle Cell Anemia or Sickle Cell Disease is an inherited blood ailment. Those suffering from Sickle Cell Disease have abnormal S/ sickle hemoglobin in the red blood cells. Hemoglobin is the protein in the blood that aids in carrying oxygen throughout the body. The ailment takes its appellation from the shape of the red blood cells of a person affected by Sickle Cell Disease, which have the shape of a sickle. They are stiff and adhesive rather than a disk like normal cells. The misshapen cells tend to get trapped in the small blood vessels hindering the movement of ...

Thin Layer Chromatography of Amino Acids

Introduction The technique used for this experiment was thin layer chromatography (TLC). TLC is used to separate components of a mixture (Clark, 2016). The purpose of this experiment was to identify an unknown amino acid. The components will have different affinities to the stationary and mobile phases. The various components will travel at different rates based on their affinity to either the mobile or stationary phase (Clark). A polar stationary phase is used in TLC experiments and the mobile phase can be a combination of solvents or just one solvent (psu.edu, n.d.). TLC can also be used to monitor ...

COMPLETE EXAM USING Powerpoints CH. 1, 2, 3, 4, 5, 6, 7, 8, 9. 10, 11, 12, 13, 14

COMPLETE EXAM USING HW & BB assignments, CWP, and study guides.

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LATE EXAMS WILL NOT BE ACCEPTED (0 points)!! Submit ORIGINAL WORK. Submit ORIGINAL WORK!! Question 1: 10 points POSSIBLE (MUST ANSWER ALL PARTS OF QUESTION) Define “INTENSITY” and “TYPE” of aerobic exercise. Aerobic intensity can be derived by finding ...

The website explains in detail how the drug development takes place and how investments made in pharmaceutical companies are affected by this process. The website begins by asserting that there is higher probability of getting 12 male children in a row than a drug seeing the shelf of a pharmacy (Williams par. 1). With that noted, it is therefore imperative for an investor in the health sector to understand the dynamic of drug-manufacturing. The initial stage is the drug discovery which involves identify a molecule e.g. a protein or gene that participates in a disease (Williams par. 2). If ...

The rediscovery of Mendel's works on heredity in 1900 became the foundation to investigate more on genetics. However, the acceleration of the study of genetics was slow, taking more than half a century later for Watson and Crick to crack the chemical basis of heredity. In fact, their proposal, the double helical structure of DNA, became the beginning of modern biology. Over the next 30 years, the advent of recombinant DNA technology allowed us to sequence specific DNA segments (Collins & McKusick, 2001). Note that mapping specific regions of a particular DNA offers explanations to many traits, including behaviors, disorders, ...

Iridium organometallic complexes

Introduction Iridium organometallic complexes are applied as catalysts, light-emitting diodes, dye-sensitized solar cells, and luminescent agents for cells imaging.1 Due to the wide application area, the scientists perform research on preparation, characterization and physical and chemical properties of iridium organometallic complexes.

The oxidation state in complex compound refers to the charge of the metal, which it would have in a simple ionic compound. The configuration of d-orbitals (dn) indicates the number of valence electrons in free metal of the same oxidation state. The iridium electronic configuration is [Xe] 4f145d76s2, yet the s-electrons transfer to d-orbital to form 5d9. The ...

The cardiovascular system consists of blood, the heart, and the circulatory system, which includes veins, arteries, and capillaries. The function of these organs is to transport oxygen from the lungs to cells throughout the body. Each organ system in the body is essential in providing homeostasis in the human body. However, the actions of the cardiovascular system are critical to human life. Many physicians, scientists, and other professionals dedicate their life to the understanding of the cardiovascular system and its diseases so that people can live longer and more productive lives. This paper will discuss the general anatomy of ...

Cellular respiration equation:

C6H12O6+6O2→6CO2+6H2O+38ATP. Glucose+Oxygen→Carbon dioxide+Water+38ATP.

Photosynthesis equation:

6CO2+6H2O+sunlight, nutrients→C6H12O6+6O2. Carbon dioxide+Water→Glucose+Oxygen. Respiration and photosynthesis are opposite processes. It means that products of cellular respiration are reactants of photosynthesis and vice versa: the products of photosynthesis are reactants for cellular respiration. It is known that plants are autotrophs. Thus, they have to realize cellular respiration because they need energy for their existence. Due to cellular respiration, they receive energy, which is used to make organic compounds (glucose) and oxygen during photosynthesis. From the other side, people are heterotrophs. They ...

Electrophilic Aromatic Substitution to yield 4-Bromoacetanilide

Introduction Halogenation is a common process in organic synthesis. It is used in industrial and research synthesis as halogenated compounds are used for numerous widely used goods, including plastics. The lab aimed to perform monohalogenation of acetanilide. The reaction is specific since it is performed without catalyst. The typical halogenation is realized in presence of Lewis acid. Halogens molecules are electrophilic, and do not actively react. In presence of Lewis acid, the interaction is rather active.2 The lab used catalyst-free halogenation. The acetanilide molecule contains the acylated amine. As a result, the electronic density is shifted towards the amine ...

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Introduction

Polymerase Chain Reaction (PCR) is a very influential technique that helps in amplifying the specific segments of DNA. This biochemical procedure is performed in-vitro that is quite different from cloning. This technique is a fusion of synthesis protocol of distinct repeated segments of DNA and thermostable DNA polymerase application that has given scientists a very potent analytical, immunological and molecular technique used prevalently in clinical laboratory science (Garibyan & Avashia, 2013). PCR is based on three primary steps that include denaturation of the template into single strands, annealing ...

Gene replacement refers to a technique which utilizes homologous recombination (Carter & Shieh, 2010, p. 265), to make alterations by either adding a gene, deleting a gene or including point mutations. Gene replacement attempts to cure most of the genetic diseases at molecular level. A successful gene replacement prevents a protein from causing harm, giving new functions to proteins, and recovering or enhancing the normal function of a protein. This technique is commonly used to prevent, treat or improve animals. This is a permanent process that is very beneficial to animals. The process of animal gene replacement involves several processes ...

The heat was intense. The orange light shone on the desert, drying up the remaining puddles of water into vapour, rising into the atmosphere. A lizard crawled slowly, almost dying, parched and with a hide so leather like, one would think it was crisp fried. Slowly, I heard the intense ringing of the siren. Waaang waaaang waaang. It was time to get inside our shelters. The shelters were not made of concrete. Unlike the olden days, concrete was the material of choice. All buildings were once made from stone, from cement mixed with water to form hard solid blocks. ...

Introduction

Cellular respiration and photosynthesis are vital reactions in living organisms since without the two; there would be no life on earth. Cellular respiration involves a set of metabolic reactions that take place in cells of living organisms thereby converting nutrients like sugar into adenosine triphosphate (ATP) (Osterhoudt & Barhydt, 2010). On the other hand, photosynthesis involves the conversion of carbon dioxide into organic compounds by the photoautotroph in the presence of sunlight. Most animals attain their energy requirements through cellular respiration while on the other hand; photosynthesis is performed by most plants that can make their food. These two reactions ...

Biology

(Department)

DNA and its importance in our lives

Introduction Deoxyribonucleic acid (DNA) is a long linear polymer located in the nucleus of a cell. It is developed from nucleotides and shaped like a double helix. It is related to the transmission of hereditary information from one generation to the second generation. DNA contains the information for the development as well as reproduction of an organism, thereby leading to a normal life. In the year 1953, James Watson, a biologist, and Francis Crick, a physicist, discovered the structure of DNA in a laboratory in England (LEROY, 2003). The structure of DNA helped scientists to know the process ...

Introduction

A fossil is any substance that evidences a once-living organism (University of Arizona, 2016). As such, fossils evidence the ancient life forms which inhabited the earth long time ago and were preserved by a natural process. Most of the fossils are found in sedimentary rocks formed from the sediments of rivers, seas, and lakes. Some of these fossils are actual remains of living things such as bones, or events that happened in the past, for instance, the dinosaur footprints. However, it is ordinarily the hard parts of organisms that get preserved under the right conditions and the interaction of ...

Introduction

There are environmental chemical processes which require light to react. These processes are called photochemical reactions. Photochemical reaction is commonly initiated due to the absorption of solar energy or light. When molecules absorb energy in the form of light, the atoms are converted in a transient excited state (Larson & Weber, 1994). This transition state or excited has completely different physical and chemical properties with the initial state of the molecule. The excited states also have more tendencies to react since they are considered stronger acids and stronger reductants that the initial state of the molecule. The excited state of ...

QUESTIONS ON BIOCHEMISTRY

Questions on Biochemistry Describe the difference between an obligate and a facultative aerobe. Obligate and facultative aerobes are the same in terms of their ability to use oxygen in their respiration process. However, obligate aerobes requires oxygen to oxidize substrates such as sugar and fat to produce ATP (energy). Obligate aerobes are more efficient in converting substrates to ATP. The key process in aerobic respiration is the conversion of sugar to ATP shown in reaction 1 below:

In the reaction 36 molecules of ATP is produced per molecule of glucose. It is actually a slow process which comprises 3 ...

I am an individual with varied interests. However, I have always remained fascinated by the science of the DNA Double Helix.  My fascination in DNA Double Helix and its functionality goes back to the 6th grade when I stumbled over my cousin’s biology assignments on the structure and functionality of the DNA Double Helix. I remember asking him to explain it to me. He said a lot of staff I could not understand then, but the only thing that caught my attention is conservative nature of DNA Double Helix. My focus on the DNA Double Helix grew fonder ...

Chemistry

2. The nano carrier needs to remain in suspension in H2O, PBS, human serum, etc. What type of polymer do you need to use to decorate the surface of the nanocarrier to achieve this goal? In order to maintain the nanocarrier in suspension in water, Phosphate-Buffered Saline (PBS), human serum a suitable solution a polymer is needed on its surface. The polymer used needs to accomplish three goals. The polymer needs to decorate the nanocarrier surface to enhance suspension and secondly, to prevent protein absorption. Another characteristic is that the polymer evades the immune system. PLGA poly(lactic-co-)glycolic ...

Compare the Biblical doctrine of creation with the 20th-century scientific explanation of the origins of the universe (e.g. the “Big Bang”). Your comparison should include some assessment of the ultimate compatibility or incompatibility of the two teachings In today’s world there are as of now two broadly acknowledged exploratory speculations clarifying how planet earth was shaped. Creationists trust that God made the sky and the earth, and that God said let there be light, and there was light. Creationists don't trust that arbitrary events of nature started the start of life as we probably am aware it. Creationists ...

Stratospheric Ozone Depletion

Ozone depletion is a natural phenomenon of the earth’s stratosphere due to the presence of free radicals that are from natural causes such as volcanic activity. However, as man evolved, he discovered his environment and built industries during the industrial revolution. These industries emitted tones of pollutants into the atmosphere, including compounds Ozone Depleting Substances. The continuous use of CFCs also contributes to the effect significantly. The worst case of ozone depletion ever recorded happened in 2006, during winter and early spring in Antarctica. That sounded a loud alarm to environmental scientists, political leaders and civil organizations come ...

Introduction

Interactions between atmospheric energy and matter and with the surface of the earth play an important role in remote sensing. There is a constant interaction between the surface of the earth, electromagnetic radiation and the atmosphere. This interaction determines the spectral areas through which remote sensing can be done (Bucholtz, 1995, 2769). Electromagnetic radiation is propagated via the earth's atmosphere at the speed of light once it has been generated. Since the earth's atmosphere is not a vacuum, it has a different impact on the wavelength, spectral distribution, speed and direction of radiation.

Scattering

One of the results obtained for ...

The title of the paper that is reviewed is: “Sumoylation and Phosphorylation of α-synuclein”.

It is a research article that explores the molecular mechanism underlying αSyn toxicity. αSyn is a protein that is seen in the inclusion bodies of dopaminergic neurons in patients with Parkinson’s disease. Parkinson is an important neurodegenerative disease, and the cure of the disease is still unknown. In-depth understanding of the molecular pathogenic of the disease will help in determining suitable cure. Through the insight obtained from a literature review and previous studies, the authors identified that post translational modification of αSyn, could affect its physical characters like the ability to form aggregates, solubility in cytoplasm and its ...

Sickle cell anemia is a genetic disease, passed on from parents to children along the generations. It is a condition which causes severe pain and anemia. It happens when the body lacks healthy red blood cells to circulate oxygen in the body. The usual shape of the red blood cells is round, and they are flexible so they can pass through the narrow blood vessels of the body. However, sickle cell anemia causes them to become sickle-shaped, like tiny crescents, which are sticky and inflexible. This restricts their movement in the blood vessels causing them to get stuck in ...

DNA, the basic unit of inheritance, has a long history which takes us thousands of years back into the past. It is highly important to have apt knowledge of DNA. In its truest sense, our knowledge of DNA begins with the results of the experiment conducted by Gregor Mendel in the year 1857. He is known by the name of “Father of Genetics”. The study of genetics was further taken ahead by Friedrich Miescher upon his discovery of a substance which he called as nuclein in the year 1869. Later on, he progressed with his experimentations and discovered another ...

Question 1

In mitosis, the number of chromosomes before and after cell division do not change. Mitosis results in daughter cells are having a diploid number of chromosomes as the parent cells.

Question 2

Mitosis is divided into four phases: Prophase- in this phase, the chromosomal material (chromatin) condenses forming compact chromosomes which are seen as two chromatids joined together at the centromere. The mitotic spindle also starts to assemble with the help microtubules Metaphase- In this phase, the spindle fibres become attached to the kinetochores of chromosomes. Chromosomes move to the equator and are aligned along the metaphase plate via spindle fibres ...

The video discusses the relationship between the electric potential and the potential difference between two elements. The video explains the circumstances in which air, which is normally viewed as a potential insulator, could act as a conductor when subjected to extreme potential differences which leads to the breakdown of ions in their molecules which in turn help them to conduct electricity. This is the major explanation as to why there is lightning during storms. The video explains the relationship between the electric fields and electric potentials to make an explanation of how insulators can be suddenly changed into becoming ...

1. Biofuels are fuels in the gaseous or liquid form and can be rapidly regenerated from sources like crops, plants and municipal waste. Existing biofuels are generated from carbohydrates such as sugar and starch (wheat and sugarcane crops). Existing biofuels, such as ethanol, have a lesser energy content (volumetric energy density) relative to conventional hydrocarbon fuels natural gas and petroleum . Furfural and Levulinic acid are molecules that can be obtained from biomass and converted into biofuels. Levulinic acid can be synthesized in greater amounts (>70%) from inedible hexose bio-polymers such as cellulose, which is a polymer of glucose ...

Introduction

Acids and bases are chemicals with a wide range of applications both industrially and on small-scale basis. According to Arrhenius, an acid is a substance that liberates H+ when placed in water (Slabaugh & Spencer, 167). On the other hand, a base is a substance that liberates OH- when placed in water (Slabaugh & Spencer, 167). To illustrate, pure water dissociates partially to produce hydrogen ions and hydroxide ions as shown in the equation below: H2Ol H+aq+ OH-aq In the above equation, water dissociates to produce H+ and OH-. If an acidic substance is placed in water, it reacts with ...

Abstract

The prodrug design is an efficient and powerful method that can be practised in a wide range of parent drug compounds, administration routes and preparations. Its main goal is to overcome the drawbacks of regular drug compounds by effectively targeting the drug's particular site of action for improved therapy. This assignment seeks mainly to depict the different classifications of prodrugs and the role these play in drug design through the use of several examples. A brief description highlighting the modern aspects of prodrug design is also covered here.

Introduction:

Prodrugs are inactive forms of drug compounds that undergo chemical or ...

Biology

Abstract Paternity test is usually performed to individuals, where their DNA are compared to other people DNA to see if these people or person, is parent to the individual or are related. The method involves use of restriction enzymes to cut DNA from samples, which are then analyzed using gel electrophoresis. Gel electrophoresis will separate the DNA according to size and charge. They will be viewed on gel as bands. Normally, the DNA patterns are usually unique for an individual. Therefore, if there is a match is patterns from the analyzed samples, then there exists close relationship between two ...

Empirical formula is the formula of a chemical compound represented as the smallest whole number ratio of the subscripts of the elements in the compound. Particularly for big ionic compounds or compounds that possess complex and network structure, such as diamond, there is no distinctive molecule. Hence, they cannot be represented with their molecular formula. For such compounds, empirical formula is useful. Empirical formula is also known as stoichiometric formula. For example, CH3COOH has two carbon atoms, four hydrogen atoms, and two oxygen atoms. Hence, it can be expressed as C2H4O2 and reduced to CH2O.

Significance

Empirical formula offers useful ...

Question 1

For succinate oxidation to fumarate there is yield of 2H+ and 2 electrons; however, the process of the reaction skips one step thereby leading to 2 ATP. The resulting FADH2 electrons skips the first stage of oxidative phosphorylation by moving into the electron transport chain located in CoQ. This can be illustrated as NADH -> CoQH2. Consequently, there is 2 ATP forming stages found in the electron chain from CoQ to O2 used in this course (Schwender et al, 50). Indifferent to the first scenario, oxidation of malate to produce oxaloacetate results to NADH, with production of 2H+ and ...

Lab Section

Empirical formula: The empirical formula is the formula of the molecule represented with the lowest possible subscripts of the elements. This formula can be obtained from percentage compositions of the elements or from combustion products. Molecular formula: The molecular formula gives the actual subscripts of the elements in the molecule. It may be the same as the empirical formula or multiplied by a whole-number factor. This formula can be determined from the empirical formula if the molar mass of the molecule is known. In other words, Molecular formula = (Empirical formula) n , where n is a whole number. The difference ...

Introduction

Using membrane for gas separation by numerous industries and fields is highly associated with easy operability, low energy costs, light weight and compactness of the process.

Organizational need

There is an organizational need by Learning Curve Consultants’ client to generate relatively pure nitrogen and oxygen gasses within the organization for the application in various processes through the use of high-pressure air as feed. The client has the need to investigate the possibility of employing the use of polymer membranes to produce both nitrogen and oxygen gasses. As a consequence, the customer has presented the team with two bench scale gas membrane ...

INFRARED SPECTROPHOTOMETRY AND ORGANIC CHEMISTRY

Infrared Spectrophotometry and Organic Chemistry Infrared (IF) Spectrophotometry is designed to determine the sample by measuring infrared radiation absorption of wavenumbers within the region of 4,000-400 cm-1 at different wavenumbers, as it passes through the sample. This technique employs the property that the IF absorption spectrum of the material is typical of its chemical structure. IR spectra are demonstrated in charts drawn via plotting on the abscissa and the absorbances or transmittances on the ordinate. Except when indicated, when the spectrum of the sample is the same in the intensity of absorption at a similar wavenumber to the ...

Executive summary

This experiment seeks to compute the overall mass transfer coefficients for nitrogen gas and oxygen gas via a polymer membrane under different experimental conditions. The calculation of the overall mass transfer coefficient of the gasses will aid in establishing how the permeability of the polymer membrane is affected by altering these conditions. The experiment employs the calculation of the separation factor in determining the efficiency of a membrane in separating oxygen gas from nitrogen gas. It uses the measured values of flow rates, exit streams and flow rate composition of the membrane component to calculate the mass transfer coefficients. ...

Introduction

The paper presents the literature review on everyday chemistry and covers the following areas: Food molecules. Chemistry using kitchen chemicals. Food safety from rotten products. The paper used Google Scholar, WorldCat, Science Direct for literature search, and the key words were: food molecules, food chemistry, kitchen chemicals, food safety and rotten.

Types of Food Molecules

Every individual knows that food contains proteins, lipids and carbohydrates. These substances are the main nutrients and are responsible for energy supply for the body. There are numerous types, some are more complicated, some are simple; some are found in nature, and some are fully artificial. However, they ...

Discovery of DNA Structure

Introduction Discovery of DNA was a landmark period in science history that generated further tremendous discoveries. Thanking to this groundbreaking discovery, it was possible to explore the impact of genetic information on the diseases, behavior, and personality. While there are a lot of disputes around the link between DNA and personality features or the ability to create lively beings with the help of DNA mapping, the discovery of the double helix structure opened the doors to the unimaginable dimensions of scientific abilities. It is believed that DNA has been discovered by James Watson and Francis Crick in the 1953, ...

Nobody likes losing things, but the outcome of any loss can always be measured on a basis of what is remaining. The loss of species from the Earth is important humanity, but the impact can only be realized if a view in proportional terms and from perspectives of what is remaining is considered. To estimate the importance of the current extinction rates, it is important to appraise the number of species that occupy the earth’s surface. Among the most surprising things about science is the little information we have. It is amusing that one can assume that biologists ...

Ans1: Growth is defined as the increase in size and mass of a particular organism over a period of time. It is measured in terms of biomass (mass of the organic material). An organism grows by mitosis. Growth stops after certain age of the organism. Growth is quantitative and measured by taking the measurement of height, weight, size and shape of body organs like brain, etc . Development is defined as the process of cells differentiation which helps in the development of the body. It adds complexities to the body (such as organ development). Development of the organism is a ...

This work is based on researches focused on how alcohol use influences human health. The use of alcohol and its health effects has been studied by a great number of scientists throughout many years. The issue discussed in giving articles touches an important debatable question concerning the benefits of alcohol drinking. There are facts which prove that though alcohol is the most spread substance causing addiction it can have benefits if used in safe amounts. Patricia Reaney describes in her article that molecules found in red wine can influence on lifespan of obese mice and “reduce the negative health ...

Introduction

In addition to their important roles in natural environ- ments, microbial enzymes can be highly specific in their activity and thus are increasingly useful in industrial applications. Enzymes from aquatic bacteria adapted to moderate and high temperatures have already figured in a variety of applications, including polymerase chain reac- tion (PCR), laundry detergents, protein recovery and organic synthesis (e.g. Mullis and Faloona, 1987; Adams and Kelly, 1995). Although enzymes with optimal activity at cold temperatures have been understudied compared with their heat-stable counterparts, increasing attention is being paid to cold-active enzymes as potential applica- tions are revealed Enzymes are ...

Investigating how light intensity will affect the rate of photosynthesis, with the help of DCPIP, in Spinach leaves.

The aim of this experiment is to find out how the rate of change of light intensity affect the photosynthesis in spinach leaves. Successful farming of food crops is very essential for both the nutritional and financial health of a nation. Governments of almost every nation invest land and labour to crop farming, as much as is possible, keeping in mind the other needs of a country. But, however, due to many reasons the maximum crop yield possible is not always achieved. For the production of a healthy crop certain conditions are necessary. The primary among these conditions are ...

Discussion 1: Public Speaking

I definitely agree with the statement: Knowing the background, interests, and expectations of your audience significantly increases the effectiveness of your speech. All this information will help to find the right approach, to make the speech interesting exactly for these people. It is important to use the references, which will be familiar to audience. Sometimes it might be a good idea to use jokes to lighten up the atmosphere. But if the audience doesn’t appreciate your sense of humor or they will be somehow offended by it then it will just make the matters worse. You should absolutely ...

I hereby certify that this material, which I now submit for assessment on the program of study leading to the award of BACHELOR OF ENGINEERING HONOURS (MANUFACTURING AND DESIGN ENGINEERING) is entirely my own work and has not been submitted for assessment for any academic purpose other than in partial fulfillment for that stated above.

Signed

Hussein Al-Tuhoo ACKNOWLEDGEMENTS I have been indebted in the preparation of this thesis to my supervisor, Dr Maura Kelleher of Dublin Institute of Technology College, whose patience and kindness, as well as her academic experience, have been invaluable to me. I am extremely grateful ...

Introduction

“There’s much stronger evidence connecting human activity to changes in temperature, melting glaciers and ocean warming,” are the words of Gerald Meehl who holds the position of a senior scientist at the National Centre for Atmospheric Research. Meehl in addition to being a scientist is also a major contributor to the report that was published by the Intergovernmental Panel on Climate Change (IPCC) and according to the report; human activity is primary cause for warming of the earth’s climate. The 2007, the report linked human activity to the change in global temperatures with 90 percent certainty, a ...

Introduction to environmental studies

Three integrated elements of sustainability The three integrated sustainability elements include the social, environmental and economic elements. They are identified to be interconnected.

What is an example of an initiative or decision that benefits people, the environment, and economic growth?

Some of the core items that are core in the environment include air and water. Careful purification of water and air is an initiative that is a beneficiary to the economic and environmental growth.

Population growth

How many people are currently on the planet? According to United Nations statistics, the world population is approximately 7.04billion What is the single most significant discovery/change in humanity’s way of living on the planet that has sparked the exponential ...

DHEA:

Dehydroepiandrosterone, or DHEA, is a hormone the human body produces via the adrenal glands, which are above the kidneys. The exact effect of DHEA is not yet fully identified; however, it is believed to be a precursor of the female and male sex hormones, namely estrogen and testosterone, among others. Precursors are substances that the body converts into hormones.

The production of DHEA usually reaches its peak around the mid-20s and declines ever after. The same applies to estrogen and testosterone, whose production also declines with age. For that reason, if an individual wants to increase their hormone levels, it ...

Introduction

The field of medicine and pharmacy has over the recent past experienced tremendous growth with technological improvements making pharmacy and the analysis of drugs and characteristics of drugs much simpler. Drug analysis is a fundamental aspect of drug development. It is not confined to making improvements to drug but also assessing quality to ascertain their fitness for human consumption. Drugs are chemical compounds that are affected by a number of factors including temperature, moisture and contaminants among others. For this reason, technology has provided an analytical tool for analyzing the drugs.

Following the introduction of spectroscopy about half a century ago, ...

Q. 1. Explain how gel filtration chromatography (size exclusion chromatography) separates molecules on the basis of their mass/size.

A. In gel filtration, porous beads are packed into a column. The pores are of different size. The column is then packed with a buffer solution. This buffer solution is present inside the beads as well as around it. When molecules of different size pass through the columns, the smaller molecules pass through the pores and take a longer path. The larger molecules, however, travel around the beads. Thus, larger molecules travel faster than the ...

Lysine

Amino acids are organic molecules, the monomers of proteins that contain both amino and carboxyl groups. Proteins of a cell mostly contain 20 types of amino acids that differ in the side chain known as R group. Therefore, the properties of the amino acid in protein fully depend on the characteristics of the side chains.

Lysine is an essential amino acid, that means it cannot be synthetized in the human organism. The side chain of the lysine molecule contains an additional amino group attached to the carbon skeleton. Because of the positive charge in the side chain, the charge ...

The process of DNA replication at biochemical level

DNA or deoxyribonucleic acid is a biopolymer that encodes all the structures needed for the organism’s lifespan and development. In a cell it is located in the nucleus, mitochondria and chloroplasts. DNA consists of four types of deoxyribonucleotides, the sequence of which is used to store the data.

The essential characteristic of DNA molecule that allows it to pass the stored information to the next generations of cells or organisms is the way of self-reproduction known as replication. The molecule consists of two complementary chains that are held together with the help of hydrogen bonds between the complementary bases. ...

Nucleon inc. had a competitive advantage over the competitors in pharmaceutical development technologies. Availability and exploitation of resources are based on high improved and advanced molecular biology and immunology. The competitors’ firms in the microbiology research in pharmaceutical enterprises were Elililly, Merck and Hoffman-LaRoche.

Presentations of values of Nucleon Inc. are on extensively doing research on CRP-1 molecule through studying genetic sequence. It has provided opportunities for the firm to become most competitive in pharmaceutical. The concern is on the development of technologies used in achieving the original results that helps in gaining patent right. The successes in research ...

Gene expression refers to the mechanism by which information from a gene directs the synthesis of proteins. This process is utilized by eukaryotes and prokaryotes. Gene expression involves various steps. These includes; transcription and translation. The central dogma indicates the flow of genetic information from the Deoxyribonucleic Acid to Ribonucleic Acid and synthesis of the required protein.

Transcription is the production Ribonucleic Acid copies of Deoxyribonucleic acids in the nucleus. The DNA consists of two anti parallel complementary strands, each having 5’ and 3’ ends. The strands serve as a template strand for the production of an RNA transcript. The ...

Abstract

Cell membranes act as hindrances to most, not all, molecules. Advancement of a cell layer that could permit a few materials to pass while obliging the movement of different molecules was a significant venture in the evolution of the unit. Unit membranes are differentially (or semi-) penetrable obstructions dividing the internal cell environment from the external cell (or) nature's domain.

Water potential is the inclination of water to move from a zone of higher focus to one of easier fixation. Energy exists in two structures: potential and kinetic. Water molecules move consistent with contrasts in potential energy between where they are and ...

1) Proto-Oncogenes and Tumor Suppressor Genes are two types of genes that ordinarily keep the cell cycle functioning as it should. Explain the roles of these two types of genes, and explain what can occur when these types of gene are not working properly. Provide at least two different examples of cancers associated with mutations of these types of genes.

The purpose of the proto-oncogenes under normal circumstances is to make sure that cells proliferate, in other words the oncogenes stimulate cell production. But when a normal, healthy ocogene cell becomes mutated or expresses at higher than normal levels it causes cancer. The first oncogenic virus was discovered in 1916 and called the Rous virus after the person who discovered it, Peyton Rous. Rous viruses represent a family of viruses called the retro viruses. Retro viruses contain a genetic material called ribonucleic acid (RNA).

There is always the possibility that RNA will be transcribed into DNA (deoxyribonucleic acid) by an enzyme of ...

Abstract

The method of Enhanced Geothermal Systems (EGS) focus on the exploitation from the heat contained in deep warm rocks associated with restricted penetrability. Although that particular extraction is just feasible when the reservoir penetrability is actually sufficient to make sure a liquid circulation in between injection as well as production water springs. Financial utilization associated with enhanced geothermal systems has to do with normal or even induced nutrient precipitation as well as associated reduction in permeability from those methods even though it might inhibit liquid flow within well casings or even in rocky fractures as well as therefore decrease heat ...

Introduction

CD4 is a cellular immune response co-receptor that raises the avidity of relationship between an antigen-presenting cell and a T-cell through interaction with non-polymorphic parts of the complex between T-cell receptor and major histocompatibility class II molecules. It directly contributes to transduction of signal via cytoplasmic relationship with the lymphocyte kinase. CD4 also plays a role as the high-affinity receptor for attachment of cells as well as entrance of HIV. The CD4 extracellular part consists of domains that resemble immunoglobulin D1 to D4. This component of the CD4 has been qualified as a recombinant soluble protein, and crystal structures have been identified for ...