Biology Essays Examples For College & High School Students in PDF

10822 total results

An Overview of Major Experiments To Examine the Speed or Pitch of Sound (906 words, 5 pages)

Even 100 Years History of Electronic Instrumentsbefore the turn of the century, when the electronic age was still in itsinfancy, the first attempts to generate sound from electricity had begun.By 1901, Thaddeus Cadhill had already manufactured the Telharmonium, anelectric organ, powered by dynamos and designed to send sound down telephonelines. ... Read More

The Description of the Stirling Engine Invented by Robert Stirling in 1816 (1330 words, 6 pages)

Robert Stirling invented the Stirlingengine in 1816. At the time he was a Scottish minister. Stirling engineswere the safest engines made during that time period that would not explodelike a steam engine could. The Stirling engine would not explode becausethe pressures could not be elevated to that to such a ... Read More

The Origin and History of the 1990’s Space Crafts and Technology (934 words, 5 pages)

Since the beginning of time, man has beenfascinated with the stars and sky. From the time the first man tookhis first step on the moon, space exploration has been growing and expanding.More and more people are coming up with new ways on how to study the universe.Hence, the more time ... Read More

The Mystery Surrounding Area 51 and UFOs in the United States (735 words, 4 pages)

Area 51IntroductionArea 51 has been at the centerof the UFO existence controversy for many years. The government deniesits existence, but how do you explain Two-hundred forty-three or more whiteJeep Cherokees patrolling an area that does not exist? This and manyother factors are what contribute to the mystique of the place ... Read More

An Overview of the Letter by Albert Einstein on the Issue of the Atomic Bomb Use (822 words, 4 pages)

On August 2, 1939 Albert Einstein wroteto President Franklin D. Roosevelt. This was right before the startof World War 2. In this letter Einstein and several other scientiststold Roosevelt of the efforts Hitler was making to purify U-235 in whichhe hoped to make an atomic bomb. This is when the ... Read More

The Evidence for Our Knowledge of the Internal Structure of the Earth (1642 words, 8 pages)

What is the evidence for our knowledgeof the internal structure of the Earth?As we enter the twenty first century weare beginning to learn more and more about the composition of the Earth.Early predictions have thrown up some rather strange and peculiar thoughtsas to what is making up our Earth, but ... Read More

A Discussion of the View That Erosion Is Caused by Human Intervention (1480 words, 6 pages)

With Reference to examples discuss theview that coastal erosion is caused by human intervention as a posed tonatural processes.For many decades the approach to rapidcoastal erosion was to build up sea defences, to try and slow down or evenstop the erosion. Initially the attempts were thought a success, howeverafter some ... Read More

Life and Inventions of Galileo Galilei (929 words, 5 pages)

Galileo Galilei was born at Pisa on the18th of February in 1564. His father, Vincenzo Galilei, belonged to a noblefamily and had gained some distinction as a musician and a mathematician.At an early age, Galileo manifested his ability to learn both mathematicaland mechanical types of things, but his parents, wishing ... Read More

The Emergence of the Nuclear Age Began in Germany (1931 words, 10 pages)

The nuclear age began in Germany, in the 1930s in the lab of chemistOtto Hahn. Hahn was attempting to produce radium (In great need during the war) bybombarding uranium atoms with neutrons. To his surprise, he ended up witha much lighter element, barium. That was 1938, This started the race ... Read More

The Childhood and Earl Works of Albert Einstein (1123 words, 2 pages)

Of all the scientists that have emerge in nineteenth and twentieth centuries there is one who is known by everyone. While most people know only little about this man's work, everyone knows that its impact on the world of science is overwhelming. It is true many of us have heard ... Read More

The Effects of War on the Development of Science (513 words, 2 pages)

War as an effect on ScienceToday, war is something that people try to avoid. The many wars and conflicts thatresulted from the past century have presented the harsh, bloody truths of warfare. Theincreasing presence of media coverage has created the attempt to better our humanity. Itcan be seen that wars ... Read More

An In-depth Look at Carbohydrates (589 words, 1 pages)

Carbohydrates are a unique kind of compound due to the atoms carbohydrate contain and because of the structure of the compound. To begin a carbohydrates include such compounds as simple sugars and complex starches. This means that there is no set structure for a carbohydrate, but all carbohydrates contain carbon ... Read More

Understanding How the Valence Shell Electron Repulsion Works (364 words, 1 pages)

Adam RodneyApril 02, 2002Chemistry4th PeriodVSEPRValence Shell Electron Pair RepulsionVSEPR stands for Valence Shell Electron Pair Repulsion. It is a basic model for the structure of covalent compounds based on repulsion of pairs of electrons and single pairs. The VSEPR theory is repulsion between the sets of valence-level electrons surrounding an ... Read More

An Overview of the Star Pollux (522 words, 1 pages)

The star Pollux, also known as Beta Geminorum or Hercules, is 33.7 0.3 light years away from the Earth. It is the closest giant star to the Earth. This star positioned on the head of the Southern Twin, the mortal twin, Castor. Pollux is the brightest star in the constellation ... Read More

The Importance of Nuclear Power Generation in United States (711 words, 4 pages)

Nuclear power as an energy source.Thesis Altough the nuclear power plants are thought to be too risky for environment, it has a vital importance in production of energy since it is one of the most beneficial energy type from the economical and enviromental sides with the help of modern technology ... Read More

The History of Sir Isaac Newton’s Fascination With Gravitation (961 words, 3 pages)

Sir Isaac Newton- Newton's fascination for gravitation started was when he was sitting underneath an apple tree alone in the countryside observing the scenery. While he was sitting down,he noticed an apple fall from the tree, he was asking himself why the apple fell down, that's when he realised that ... Read More

A Look at the Phases in Cell Division and Growth (1645 words, 3 pages)

In order for a cells surface area to provide its volume with sufficient nutrients, a cell must grow and divide. This division, along with the four other phases of mitosis, make up the whole cell cycle. In this graph, Cell Division Its Divisions, we will explore the many different elements, ... Read More

A Look at the Mendel’s Experiments With Pea Plant (2167 words, 4 pages)

Mendel brought considerable insight to his studies. One of the most important decisions he made was to work in a system that was genetically simple as possible. His use of pure-breeding strains of pea plants is indicative of his quest for this simplicity."Mendel used pea plants in his experiments because ... Read More

Precision and Accuracy Are a Necessity in the Field of Science (451 words, 1 pages)

In the fields of science precision and accuracy mean two very different things. Accuracy is defined to be how close the result value is to the actual value. Precision is basically being able to reproduce the same result in other trials. In the hypothetical data given to us from Alf, ... Read More

The Difference Between Dominance and Co-Dominance Type of Inheritance (959 words, 2 pages)

In this first question I will successfully compare and contrast incomplete dominance (intermediate inheritance) and co-dominance, using the knowledge which I have gained through the G.B.E. class, notes, and textbook.Incomplete dominance and co-dominance are two non-Mendelian modes of inheritance. In other words, there are less commonly seen results of Mendels ... Read More

The Process of Hair Growth and Hair Loss on a Human Body (588 words, 1 pages)

Hair Hair grows all over the human body. Hair is produced by hair follicles. Hair follicles are indentations of the epidermis or the outer skin layer. The epidermis contains many important things that have to do with hair. It contains the hair root and the muscle attached to it. It ... Read More

The History and Future of Genetic Engineering (3003 words, 11 pages)

Genetic Engineering, history and futureAltering the Face of Science Science is a creature that continues to evolve at a much higher rate than the beings thatgave it birth. The transformation time from tree-shrew, to ape, to human far exceeds the timefrom analytical engine, to calculator, to computer. But science, in ... Read More

Understanding the Effects and Benefits of Nuclear Fusion (980 words, 2 pages)

Fusion EnergyBy Shaun ThomasShaun ThomasMr. SweetlandGeneral Physical ScienceJune 22, 2001Fusion Our Future's Energy?Fusion energy seems to be the most promising energy source of the not-too-distant future. It is safe, it uses an energy supply that is so abundant that it will never run out, it gives off harmless waste, and ... Read More

Understanding How Electron Transfer Works (369 words, 1 pages)

Electron transfer is used in electro-chemiscal cell, and also causes things to rust. When certain metals come into contact with oxygen, they loose electrons in a process called oxidation. Calcium, salt, and water can speed up this process, and this is most easily seen in the shipping industry. Iron and ... Read More

The Importance of Nucleotides in the Structure of the DNA (926 words, 2 pages)

Nucleotides are important to the structure of DNA. In this essay, I defined the term and explained what the function of a nucleotide is through explanation and illustration.A nucleotide, as defined in my computers Microsoft Bookshelf, is a subset of the DNA ladder shown in question number one. They are ... Read More

The Evolution of Cloning Throughout the History of Mankind (435 words, 1 pages)

Cloning is the production of one or more individual plants or animals that are genetically identical to another plant or animal. Nature is the greatest cloning agent. In about one of every 75 human conceptions, the fertilized ovum splits for some unknown reason and produces identical twins. Each has a ... Read More

An Overview of the Three Main Divisions of the Cleavage (501 words, 1 pages)

Cleavage is the third phase of ontogeny, following gametogenesis and fertilization in the formation of an embryo from a zygote . It is defined in Campbells as a succession of rapid cell divisions that produces a ball of cells from the zygote. (pg. 959) This solid sphere of cells is ... Read More

An Overview of the Popular Big Bang Theory (905 words, 5 pages)

The more I see, the more I see there is to see John Sebastian For a few centuries scientists are discovering and implementing astronomical definitions and rules of the modern physics. The more they learnt , the more their attention was turning to the global question of starting point of ... Read More

The Many Different Techniques Used to Sterilize Culture Media in a Laboratory Procedure (672 words, 2 pages)

In a classroom lab situation, as with hospitals, research centers, and other lab research areas, accurate measurements and observed results are desired. In order to obtain this objective while observing a desired organism, the specific organism must be isolated and placed into a sterile medium to exclude unwanted or contaminant ... Read More

Early Mistakes Scientists Made on Anti-Matter Research (1213 words, 3 pages)

Anti-Matter Introduction Ordinary matter has negatively charged electrons circling a positively charged nuclei. Anti-matter has positively charged electrons - positrons -orbiting a nuclei with a negative charge - anti-protons. Only anti-protons and positrons are able to be produced at this time, but scientists in Switzerland have begun aseries of experiments ... Read More

Biology Essay Examples