Biology Essays Examples For College & High School Students in PDF

10822 total results

The Invention and History of the Steam Engine Since 1769 (840 words, 2 pages)

In the world that we live in, there are constant changes happening all the time. The advancement of our society has grown so quickly. These changes changed the world to what it is today. At the turn of the century, through transportation and communications was the world affected in the ... Read More

An Introduction to the History of the Old 45mhz Broadcast Band (1252 words, 8 pages)

The old 45MHz FM broadcast band In 1945 the FCC decided that FM would have to move from the established42 - 49 megahertz pre-war band to a new band at 88 - 108 megahertz, to make way for television. Both in frequency spectra andconsumer dollars. Therefore, all radios with an ... Read More

Characteristics of Ammonium Nirate (734 words, 3 pages)

Ammonium NitrateAmmonium Nitrate (AN), NH4NO3, has a molecular weight of 80.05. It does not occur in nature. This white crystalline solid was first described in 1659 by Gauber who called it Nitram flammens because it produced a yellow flame when burned due to traces of sodium in his samples. Today, ... Read More

An Experiment About the Process of Recrystallizing an Impure Compound (529 words, 2 pages)

Recrystallization Of An Impure CompoundLori BenkoskiOrganic Chemistry12-11-97PurposeQuestion The purpose of this lab is to recrystallize acetanilide by refluxing the substance, filtering it out, and comparing the original mass to the mass of the pure crystals.Equipment Buchner Funnel2.0 g acetanilide Charcoal filter paper Boiling chips (Boileezers)filtering flask reflux condenseriron ring round ... Read More

Facts and Functions of Eukaryotic Organelles (328 words, 2 pages)

Essay of Eukaryotic Organelles 10196The mitochondria has an eggshape structure. The mitochondria consists ofan inner and outer membrane. The outer membrane is what shapes theorganelle to its egglike shape. The inner membrane which folds inwardmakes a set of "shelves" or cristae that allow the reactions of themitochondria to take place. ... Read More

An Experiment to Find out the Effects of pH on Mung Beans (1279 words, 4 pages)

The effects of pH on mung beansGloria ChengWinsy CheungLily WongChristine YenJanuary 15, 1998AbstractThis experiment explores how different pH environments affect the growth of mung beans. The mung beans were grown in water with various pH levels, consisted of pH levels 5, 6, 7, 8, and 9. A replicated design was ... Read More

An Overview of the Constellation Names Used by Ancient Sumerian Shepherds (672 words, 4 pages)

CONSTELLATIONSFor untold thousands of years men have traced the outlinesof familiar things among the stars. These patterns in the nightsky are called constellations, from Latin words meaning togetherand stars.Many of the constellations have names that are very old. TheSumerian shepherds and farmers of Mesopotamia 7,000 years ago mayhave called the ... Read More

Understanding the Three Forces That Act on an Airplanes to Keep It Airborne (733 words, 1 pages)

Every day, across the world, thousands of planes take off from airports and travel great distances in short amounts of time, saving time and money for many people and businesses. We use planes to sit mail, packages, luggage, and people. Without flight, the worlds transportation would be a lot slower ... Read More

An Analysis of the Invention of the Atomic Bomb in the United States’ History (3038 words, 5 pages)

The invention of the Atomic Bomb has been called the most important historic event of the twentieth century and its implementation has been described as a wise decision and an atrocity. It has inspired poets and artists. It has intrigued military historians, who want to know if it was necessary ... Read More

An Introduction to the Origins and the Analysis of Helium (655 words, 2 pages)

Helium by I ain't telling you!!!Pierre Janssen discovered helium in the sun in 1868. Janssen originally thought it was sodium, but Joseph Norman Lockyer noticed that it didn't correspond to the D1 and D2 lines of sodium. He named it the "D3" line. Lockyer said that the element D3 was ... Read More

A Biography of Charles Augustus Lindbergh, an American Aviator (802 words, 4 pages)

Lindbergh, Charles Augustus (1902-1974), American aviator, engineer, and Pulitzer Prize winner, who was the first person to make a nonstop solo flight across the Atlantic. Charles Augustus Lindbergh was born February 4, 1902, in Detroit and was delivered by his great-uncle. When he was three years old, his three-story house ... Read More

An Overview of the Validity of Nazi Hypothermia Experimentations and the Question of Ethics Versus Scientific Knowledge (2479 words, 10 pages)

The Validity of Nazi Hypothermia Experimentations The Question of Ethics Versus Scientific Knowledge.This essay deals with medical experiments conducted by the Nazis during the SecondWorld War. Many types of experimentation occurred in the Third Reich, they includeeuthanasia, hypothermia, high pressure, and genetics. However, most of the experiments carriedout in Nazi ... Read More

An Introduction to the Life and Career by Stephen Hawking (799 words, 2 pages)

Genius OverlookedJess BrockAlgebra IIISummer SchoolMr. PalumboJuly 24, 1999Stephen Hawking is, all in all, one of the greatest thinkers of the twentieth century. Dr. Hawking is a theoretical physicist. In his own words, "A theoretical physicisttries to construct mathematical models which represent the universe." Sadly, though, his triumphs are often overshadowed ... Read More

The Concerns in the U.S. Over the Harmful Pest ‘Fire Ants’ (856 words, 2 pages)

In the following assignment I will be talking about fire ants. My assignment is mostly based up on an article wich I chosed from the magasin Scientific American February 1999. In the United States, one of the most harmful pests among the ants is the red imported fire ant. The ... Read More

An Overview of the Work by Doctor Leo Szilard and the Development of an Atomic Bomb (815 words, 2 pages)

You are driving along, you stop at a red light, you are probably thinking about what you will have for dinner, but while Dr. Leo Szilard was stopped at a red light he came up with an idea that would destroy two cities, kill hundreds of thousands of people, shock ... Read More

An Overview of the Concept of the Hydrogen Bomb and the Potential Danger (1078 words, 5 pages)

The Hydrogen Bomb Essay submitted by Anonymous Thesis Statement The hydrogen bomb is a nuclear weapon in which light atomic nuclei of hydrogen are joined together in an uncontrolled nuclear fusion reaction to release tremendous amounts of energy. The hydrogen bomb is about a thousand times as powerful as the ... Read More

The Second War That Made Unites States a World Power (2072 words, 9 pages)

The Atomic Bomb Essay submitted by Anonymous Background of the Atomic Bomb It was during the Second World War that the United States became a world power, thanks in a large part to its monopoly on atomic weapons. The atomic bomb is a weapon with great explosive power that results ... Read More

The Problems of Nuclear Fusion Power (2160 words, 4 pages)

Over the past four or five decades, and especially in recent years, there has been a lot of talk among the scientific community and in everyday life about the development of nuclear fusion as an energy source. It seems that the everyday person has some sort of fairy tale image ... Read More

A Biography of Isaac Newton and the Importance of His Discoveries (348 words, 1 pages)

When deciding on the list of the greatest mathematicians in history, one name that is sure to come up is Isaac Newton. Newton made several important discoveries in the fields of mathematics and physical science, and in doing so changed the direction is which the sciences of dynamics, optics and ... Read More

The Great Advances in Mapping Techniques of the DNA (949 words, 2 pages)

The human body has been mapped and charted at different levels since before recorded history. The concept of the human genome project allows international scientists to take this mapping to an entirely new level and depth of complexity. Genes that scientists have mapped and broken down to fully understand, can ... Read More

The Contributions of John Dalton in the Field of Science (453 words, 1 pages)

Dalton, John (1766-1844), British chemist and physicist, who developed the atomic theory upon which modern physical science is founded. Dalton was born on September 6, 1766, in Eaglesfield, Cumberland County, England. He was the son of a weaver and received his early education from his father and at a Quaker ... Read More

An Analysis of the Genetic Engineering Technology and Its Importance in the Society (612 words, 3 pages)

Genetic engineering, altering the inherited characteristics of an organism in a predetermined way, by introducing into it a piece of the genetic material of another organism. Genetic engineering offers the hope of cures for many inherited diseases, once the problem of low efficiencies of effective transfer of genetic material is ... Read More

An Analysis of the Concept of Evolution Theory (1014 words, 2 pages)

While a good portion of the wold's population has already made up their minds, evolutionists are still searching for new evidence proving evolution over the more common and realistic belief of the Christian God. All Christians admit that evolutionists have far more evidence and information, however each theory contradicts the ... Read More

The Applied Chemistry Research on Caffeine by Graham Cousins (737 words, 3 pages)

120499 Applied Chemistry Research-Caffeine Graham CousinsCaffeine, a odorless slightly bitter substance that is in most caffeinated beverages. Caffeine is present in about 4 of tea leaves and in coffee. Caffeine contains two otheralkaloids, theobromine and theophylline. These two relax the muscles while the caffeinestimulates the heart and respiratory systems. The ... Read More

The Main Characteristics of the Chemical Element Radium (2325 words, 5 pages)

Radium is a silver-white, highly radioactive element. Its atomic number is 88, and it is the heaviest alkali earth metal, having a mass number of 226.025 (See Figure 1). Radium has at least twenty six isotopes, and all are radioactive (Shriver 1995). Since radium is chemically similar to calcium and ... Read More

An Analysis and the Experiment of the Chemical Stress Effects (1319 words, 3 pages)

AbstractThis is an experiment on how chemical stress effects cell membranes, specifically the tonoplast of Beta vulgaris taproot cells. This experiment involved the treatment of the aforesaid cells with different concentrations of an acetone solution, and testing the resulting solution for absorbance of light by betacyanine, using a spectrophotometer. It ... Read More

An Analysis of the Topic of the Society and the Technological Benefits (996 words, 4 pages)

Society uses technological benefits as gateways into the realm of the future. Through this, we are lead to a serious debate on morality vs. technology that of placing aban on human cloning. Many look at this amazing new innovation in science from areligious point of view, and declare it morally ... Read More

The Issue of Acid Deposition and Its Effects (2428 words, 4 pages)

ACID DEPOSITION Picture a cancer, eating a human, a sister, a brother, away bit by bit. Destroying every organ, slowing every heart beat, weakening every muscle. Then finally, shutting the body down. Ending its existence. Acid deposition is the earths cancer. Every rain drop causing massive destruction throughout the world. ... Read More

An Introduction to the Definition and Usage of Terbium (440 words, 1 pages)

TerbiumWhat is Terbium? How and what is Terbium used for in everyday human life? Where is Terbium's origination point? Many people have never even heard of the element Terbium and you may ask why not? But all these questions and more will be revealed within the body of this essay.Terbium ... Read More

The Development of the Human Genome Project and Its Impact in the Modern World (2293 words, 6 pages)

1 IntroductionThe Human Genome Project is possibly the most important project in the world currently. Several companies and governments are involved with this project. The project has many goals but the main general goal is "to construct a detailed genetic and physical map of the human Genome, to determine the ... Read More

Biology Essay Examples